diff options
53 files changed, 347 insertions, 402 deletions
diff --git a/arch/cris/arch-v10/drivers/ds1302.c b/arch/cris/arch-v10/drivers/ds1302.c index 884275629ef..4b92ad08b0f 100644 --- a/arch/cris/arch-v10/drivers/ds1302.c +++ b/arch/cris/arch-v10/drivers/ds1302.c @@ -19,7 +19,7 @@ #include <linux/module.h> #include <linux/miscdevice.h> #include <linux/delay.h> -#include <linux/smp_lock.h> +#include <linux/mutex.h> #include <linux/bcd.h> #include <linux/capability.h> @@ -34,6 +34,7 @@ #define RTC_MAJOR_NR 121 /* local major, change later */ +static DEFINE_MUTEX(ds1302_mutex); static const char ds1302_name[] = "ds1302"; /* The DS1302 might be connected to different bits on different products. @@ -357,9 +358,9 @@ static long rtc_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned lon { int ret; - lock_kernel(); + mutex_lock(&ds1302_mutex); ret = rtc_ioctl(file, cmd, arg); - unlock_kernel(); + mutex_unlock(&ds1302_mutex); return ret; } diff --git a/arch/cris/arch-v10/drivers/pcf8563.c b/arch/cris/arch-v10/drivers/pcf8563.c index 7dcb1f85f42..2f1ddedca2b 100644 --- a/arch/cris/arch-v10/drivers/pcf8563.c +++ b/arch/cris/arch-v10/drivers/pcf8563.c @@ -27,7 +27,6 @@ #include <linux/delay.h> #include <linux/bcd.h> #include <linux/mutex.h> -#include <linux/smp_lock.h> #include <asm/uaccess.h> #include <asm/system.h> @@ -49,6 +48,7 @@ #define rtc_read(x) i2c_readreg(RTC_I2C_READ, x) #define rtc_write(x,y) i2c_writereg(RTC_I2C_WRITE, x, y) +static DEFINE_MUTEX(pcf8563_mutex); static DEFINE_MUTEX(rtc_lock); /* Protect state etc */ static const unsigned char days_in_month[] = @@ -343,9 +343,9 @@ static long pcf8563_unlocked_ioctl(struct file *filp, unsigned int cmd, unsigned { int ret; - lock_kernel(); + mutex_lock(&pcf8563_mutex); return pcf8563_ioctl(filp, cmd, arg); - unlock_kernel(); + mutex_unlock(&pcf8563_mutex); return ret; } diff --git a/arch/cris/arch-v10/drivers/sync_serial.c b/arch/cris/arch-v10/drivers/sync_serial.c index ee2dd4323da..3d9fa074a94 100644 --- a/arch/cris/arch-v10/drivers/sync_serial.c +++ b/arch/cris/arch-v10/drivers/sync_serial.c @@ -20,7 +20,7 @@ #include <linux/interrupt.h> #include <linux/poll.h> #include <linux/init.h> -#include <linux/smp_lock.h> +#include <linux/mutex.h> #include <linux/timer.h> #include <asm/irq.h> #include <asm/dma.h> @@ -149,6 +149,7 @@ struct sync_port { }; +static DEFINE_MUTEX(sync_serial_mutex); static int etrax_sync_serial_init(void); static void initialize_port(int portnbr); static inline int sync_data_avail(struct sync_port *port); @@ -445,7 +446,7 @@ static int sync_serial_open(struct inode *inode, struct file *file) int mode; int err = -EBUSY; - lock_kernel(); + mutex_lock(&sync_serial_mutex); DEBUG(printk(KERN_DEBUG "Open sync serial port %d\n", dev)); if (dev < 0 || dev >= NUMBER_OF_PORTS || !ports[dev].enabled) { @@ -626,7 +627,7 @@ static int sync_serial_open(struct inode *inode, struct file *file) ret = 0; out: - unlock_kernel(); + mutex_unlock(&sync_serial_mutex); return ret; } @@ -961,9 +962,9 @@ static long sync_serial_ioctl(struct file *file, { long ret; - lock_kernel(); + mutex_lock(&sync_serial_mutex); ret = sync_serial_ioctl_unlocked(file, cmd, arg); - unlock_kernel(); + mutex_unlock(&sync_serial_mutex); return ret; } diff --git a/arch/cris/arch-v32/drivers/cryptocop.c b/arch/cris/arch-v32/drivers/cryptocop.c index b07646a3050..0973d5a2780 100644 --- a/arch/cris/arch-v32/drivers/cryptocop.c +++ b/arch/cris/arch-v32/drivers/cryptocop.c @@ -3139,9 +3139,9 @@ cryptocop_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) struct inode *inode = file->f_path.dentry->d_inode; long ret; - lock_kernel(); + mutex_lock(&cryptocop_mutex); ret = cryptocop_ioctl_unlocked(inode, filp, cmd, arg); - unlock_kernel(); + mutex_unlock(&cryptocop_mutex); return ret; } diff --git a/arch/cris/arch-v32/drivers/mach-a3/gpio.c b/arch/cris/arch-v32/drivers/mach-a3/gpio.c index 2dcd27adbad..50d1885c479 100644 --- a/arch/cris/arch-v32/drivers/mach-a3/gpio.c +++ b/arch/cris/arch-v32/drivers/mach-a3/gpio.c @@ -23,7 +23,7 @@ #include <linux/init.h> #include <linux/interrupt.h> #include <linux/spinlock.h> -#include <linux/smp_lock.h> +#include <linux/mutex.h> #include <asm/etraxgpio.h> #include <hwregs/reg_map.h> @@ -66,6 +66,7 @@ static int dp_cnt; #define DP(x) #endif +static DEFINE_MUTEX(gpio_mutex); static char gpio_name[] = "etrax gpio"; #ifdef CONFIG_ETRAX_VIRTUAL_GPIO @@ -391,7 +392,7 @@ static int gpio_open(struct inode *inode, struct file *filp) if (!priv) return -ENOMEM; - lock_kernel(); + mutex_lock(&gpio_mutex); memset(priv, 0, sizeof(*priv)); priv->minor = p; @@ -414,7 +415,7 @@ static int gpio_open(struct inode *inode, struct file *filp) spin_unlock_irq(&gpio_lock); } - unlock_kernel(); + mutex_unlock(&gpio_mutex); return 0; } @@ -667,9 +668,9 @@ static long gpio_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { long ret; - lock_kernel(); + mutex_lock(&gpio_mutex); ret = gpio_ioctl_unlocked(file, cmd, arg); - unlock_kernel(); + mutex_unlock(&gpio_mutex); return ret; } diff --git a/arch/cris/arch-v32/drivers/mach-fs/gpio.c b/arch/cris/arch-v32/drivers/mach-fs/gpio.c index 5ec8a7d4e7d..de8dca0550f 100644 --- a/arch/cris/arch-v32/drivers/mach-fs/gpio.c +++ b/arch/cris/arch-v32/drivers/mach-fs/gpio.c @@ -22,7 +22,7 @@ #include <linux/init.h> #include <linux/interrupt.h> #include <linux/spinlock.h> -#include <linux/smp_lock.h> +#include <linux/mutex.h> #include <asm/etraxgpio.h> #include <hwregs/reg_map.h> @@ -64,6 +64,7 @@ static int dp_cnt; #define DP(x) #endif +static DEFINE_MUTEX(gpio_mutex); static char gpio_name[] = "etrax gpio"; #if 0 @@ -429,7 +430,7 @@ gpio_open(struct inode *inode, struct file *filp) if (!priv) return -ENOMEM; - lock_kernel(); + mutex_lock(&gpio_mutex); memset(priv, 0, sizeof(*priv)); priv->minor = p; @@ -450,7 +451,7 @@ gpio_open(struct inode *inode, struct file *filp) alarmlist = priv; spin_unlock_irq(&alarm_lock); - unlock_kernel(); + mutex_unlock(&gpio_mutex); return 0; } @@ -708,9 +709,9 @@ static long gpio_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { long ret; - lock_kernel(); + mutex_lock(&gpio_mutex); ret = gpio_ioctl_unlocked(file, cmd, arg); - unlock_kernel(); + mutex_unlock(&gpio_mutex); return ret; } diff --git a/arch/cris/arch-v32/drivers/pcf8563.c b/arch/cris/arch-v32/drivers/pcf8563.c index bef6eb53b15..bdcac9dec5c 100644 --- a/arch/cris/arch-v32/drivers/pcf8563.c +++ b/arch/cris/arch-v32/drivers/pcf8563.c @@ -24,7 +24,6 @@ #include <linux/init.h> #include <linux/fs.h> #include <linux/ioctl.h> -#include <linux/smp_lock.h> #include <linux/delay.h> #include <linux/bcd.h> #include <linux/mutex.h> @@ -45,6 +44,7 @@ #define rtc_read(x) i2c_readreg(RTC_I2C_READ, x) #define rtc_write(x,y) i2c_writereg(RTC_I2C_WRITE, x, y) +static DEFINE_MUTEX(pcf8563_mutex); static DEFINE_MUTEX(rtc_lock); /* Protect state etc */ static const unsigned char days_in_month[] = @@ -339,9 +339,9 @@ static long pcf8563_unlocked_ioctl(struct file *filp, unsigned int cmd, unsigned { int ret; - lock_kernel(); + mutex_lock(&pcf8563_mutex); return pcf8563_ioctl(filp, cmd, arg); - unlock_kernel(); + mutex_unlock(&pcf8563_mutex); return ret; } diff --git a/arch/cris/arch-v32/drivers/sync_serial.c b/arch/cris/arch-v32/drivers/sync_serial.c index ca248f3adb8..a01ae9f3b81 100644 --- a/arch/cris/arch-v32/drivers/sync_serial.c +++ b/arch/cris/arch-v32/drivers/sync_serial.c @@ -13,7 +13,7 @@ #include <linux/errno.h> #include <linux/major.h> #include <linux/sched.h> -#include <linux/smp_lock.h> +#include <linux/mutex.h> #include <linux/interrupt.h> #include <linux/poll.h> #include <linux/init.h> @@ -145,6 +145,7 @@ typedef struct sync_port spinlock_t lock; } sync_port; +static DEFINE_MUTEX(sync_serial_mutex); static int etrax_sync_serial_init(void); static void initialize_port(int portnbr); static inline int sync_data_avail(struct sync_port *port); @@ -434,7 +435,7 @@ static int sync_serial_open(struct inode *inode, struct file *file) reg_dma_rw_cfg cfg = {.en = regk_dma_yes}; reg_dma_rw_intr_mask intr_mask = {.data = regk_dma_yes}; - lock_kernel(); + mutex_lock(&sync_serial_mutex); DEBUG(printk(KERN_DEBUG "Open sync serial port %d\n", dev)); if (dev < 0 || dev >= NBR_PORTS || !ports[dev].enabled) @@ -583,7 +584,7 @@ static int sync_serial_open(struct inode *inode, struct file *file) port->busy++; ret = 0; out: - unlock_kernel(); + mutex_unlock(&sync_serial_mutex); return ret; } @@ -966,9 +967,9 @@ static long sync_serial_ioctl(struct file *file, { long ret; - lock_kernel(); + mutex_lock(&sync_serial_mutex); ret = sync_serial_ioctl_unlocked(file, cmd, arg); - unlock_kernel(); + mutex_unlock(&sync_serial_mutex); return ret; } diff --git a/arch/parisc/kernel/perf.c b/arch/parisc/kernel/perf.c index f9f6783e4bd..ba0c053e25a 100644 --- a/arch/parisc/kernel/perf.c +++ b/arch/parisc/kernel/perf.c @@ -46,7 +46,6 @@ #include <linux/init.h> #include <linux/proc_fs.h> #include <linux/miscdevice.h> -#include <linux/smp_lock.h> #include <linux/spinlock.h> #include <asm/uaccess.h> @@ -261,16 +260,13 @@ printk("Preparing to start counters\n"); */ static int perf_open(struct inode *inode, struct file *file) { - lock_kernel(); spin_lock(&perf_lock); if (perf_enabled) { spin_unlock(&perf_lock); - unlock_kernel(); return -EBUSY; } perf_enabled = 1; spin_unlock(&perf_lock); - unlock_kernel(); return 0; } diff --git a/arch/um/drivers/harddog_kern.c b/arch/um/drivers/harddog_kern.c index cfcac1ff4cf..86036276020 100644 --- a/arch/um/drivers/harddog_kern.c +++ b/arch/um/drivers/harddog_kern.c @@ -42,7 +42,7 @@ #include <linux/miscdevice.h> #include <linux/watchdog.h> #include <linux/reboot.h> -#include <linux/smp_lock.h> +#include <linux/mutex.h> #include <linux/init.h> #include <linux/spinlock.h> #include <asm/uaccess.h> @@ -50,6 +50,7 @@ MODULE_LICENSE("GPL"); +static DEFINE_MUTEX(harddog_mutex); static DEFINE_SPINLOCK(lock); static int timer_alive; static int harddog_in_fd = -1; @@ -66,7 +67,7 @@ static int harddog_open(struct inode *inode, struct file *file) int err = -EBUSY; char *sock = NULL; - lock_kernel(); + mutex_lock(&harddog_mutex); spin_lock(&lock); if(timer_alive) goto err; @@ -83,11 +84,11 @@ static int harddog_open(struct inode *inode, struct file *file) timer_alive = 1; spin_unlock(&lock); - unlock_kernel(); + mutex_unlock(&harddog_mutex); return nonseekable_open(inode, file); err: spin_unlock(&lock); - unlock_kernel(); + mutex_unlock(&harddog_mutex); return err; } @@ -153,9 +154,9 @@ static long harddog_ioctl(struct file *file, { long ret; - lock_kernel(); + mutex_lock(&harddog_mutex); ret = harddog_ioctl_unlocked(file, cmd, arg); - unlock_kernel(); + mutex_unlock(&harddog_mutex); return ret; } diff --git a/arch/um/drivers/hostaudio_kern.c b/arch/um/drivers/hostaudio_kern.c index 63c740a85b4..f9f6a4e2059 100644 --- a/arch/um/drivers/hostaudio_kern.c +++ b/arch/um/drivers/hostaudio_kern.c @@ -8,7 +8,7 @@ #include "linux/slab.h" #include "linux/sound.h" #include "linux/soundcard.h" -#include "linux/smp_lock.h" +#include "linux/mutex.h" #include "asm/uaccess.h" #include "init.h" #include "os.h" @@ -63,6 +63,8 @@ static int set_mixer(char *name, int *add) __uml_setup("mixer=", set_mixer, "mixer=<mixer device>\n" MIXER_HELP); #endif +static DEFINE_MUTEX(hostaudio_mutex); + /* /dev/dsp file operations */ static ssize_t hostaudio_read(struct file *file, char __user *buffer, @@ -198,9 +200,9 @@ static int hostaudio_open(struct inode *inode, struct file *file) w = 1; kparam_block_sysfs_write(dsp); - lock_kernel(); + mutex_lock(&hostaudio_mutex); ret = os_open_file(dsp, of_set_rw(OPENFLAGS(), r, w), 0); - unlock_kernel(); + mutex_unlock(&hostaudio_mutex); kparam_unblock_sysfs_write(dsp); if (ret < 0) { @@ -259,9 +261,9 @@ static int hostmixer_open_mixdev(struct inode *inode, struct file *file) w = 1; kparam_block_sysfs_write(mixer); - lock_kernel(); + mutex_lock(&hostaudio_mutex); ret = os_open_file(mixer, of_set_rw(OPENFLAGS(), r, w), 0); - unlock_kernel(); + mutex_unlock(&hostaudio_mutex); kparam_unblock_sysfs_write(mixer); if (ret < 0) { diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c index 9734994cba1..ba4a98ba39c 100644 --- a/arch/um/drivers/ubd_kern.c +++ b/arch/um/drivers/ubd_kern.c @@ -33,7 +33,7 @@ #include "linux/mm.h" #include "linux/slab.h" #include "linux/vmalloc.h" -#include "linux/smp_lock.h" +#include "linux/mutex.h" #include "linux/blkpg.h" #include "linux/genhd.h" #include "linux/spinlock.h" @@ -100,6 +100,7 @@ static inline void ubd_set_bit(__u64 bit, unsigned char *data) #define DRIVER_NAME "uml-blkdev" static DEFINE_MUTEX(ubd_lock); +static DEFINE_MUTEX(ubd_mutex); /* replaces BKL, might not be needed */ static int ubd_open(struct block_device *bdev, fmode_t mode); static int ubd_release(struct gendisk *disk, fmode_t mode); @@ -1101,7 +1102,7 @@ static int ubd_open(struct block_device *bdev, fmode_t mode) struct ubd *ubd_dev = disk->private_data; int err = 0; - lock_kernel(); + mutex_lock(&ubd_mutex); if(ubd_dev->count == 0){ err = ubd_open_dev(ubd_dev); if(err){ @@ -1120,7 +1121,7 @@ static int ubd_open(struct block_device *bdev, fmode_t mode) err = -EROFS; }*/ out: - unlock_kernel(); + mutex_unlock(&ubd_mutex); return err; } @@ -1128,10 +1129,10 @@ static int ubd_release(struct gendisk *disk, fmode_t mode) { struct ubd *ubd_dev = disk->private_data; - lock_kernel(); + mutex_lock(&ubd_mutex); if(--ubd_dev->count == 0) ubd_close_dev(ubd_dev); - unlock_kernel(); + mutex_unlock(&ubd_mutex); return 0; } diff --git a/arch/um/kernel/exec.c b/arch/um/kernel/exec.c index 49b5e1eb326..340268be00b 100644 --- a/arch/um/kernel/exec.c +++ b/arch/um/kernel/exec.c @@ -78,13 +78,11 @@ long sys_execve(const char __user *file, const char __user *const __user *argv, long error; char *filename; - lock_kernel(); filename = getname(file); error = PTR_ERR(filename); if (IS_ERR(filename)) goto out; error = execve1(filename, argv, env); putname(filename); out: - unlock_kernel(); return error; } diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c index a0a1829d319..a4eee324eb1 100644 --- a/drivers/char/hpet.c +++ b/drivers/char/hpet.c @@ -30,6 +30,7 @@ #include <linux/bcd.h> #include <linux/seq_file.h> #include <linux/bitops.h> +#include <linux/compat.h> #include <linux/clocksource.h> #include <linux/slab.h> @@ -67,6 +68,7 @@ #define read_counter(MC) readl(MC) #endif +static DEFINE_MUTEX(hpet_mutex); /* replaces BKL */ static u32 hpet_nhpet, hpet_max_freq = HPET_USER_FREQ; /* This clocksource driver currently only works on ia64 */ @@ -250,7 +252,7 @@ static int hpet_open(struct inode *inode, struct file *file) if (file->f_mode & FMODE_WRITE) return -EINVAL; - lock_kernel(); + mutex_lock(&hpet_mutex); spin_lock_irq(&hpet_lock); for (devp = NULL, hpetp = hpets; hpetp && !devp; hpetp = hpetp->hp_next) @@ -264,7 +266,7 @@ static int hpet_open(struct inode *inode, struct file *file) if (!devp) { spin_unlock_irq(&hpet_lock); - unlock_kernel(); + mutex_unlock(&hpet_mutex); return -EBUSY; } @@ -272,7 +274,7 @@ static int hpet_open(struct inode *inode, struct file *file) devp->hd_irqdata = 0; devp->hd_flags |= HPET_OPEN; spin_unlock_irq(&hpet_lock); - unlock_kernel(); + mutex_unlock(&hpet_mutex); hpet_timer_set_irq(devp); @@ -429,22 +431,6 @@ static int hpet_release(struct inode *inode, struct file *file) return 0; } -static int hpet_ioctl_common(struct hpet_dev *, int, unsigned long, int); - -static long hpet_ioctl(struct file *file, unsigned int cmd, - unsigned long arg) -{ - struct hpet_dev *devp; - int ret; - - devp = file->private_data; - lock_kernel(); - ret = hpet_ioctl_common(devp, cmd, arg, 0); - unlock_kernel(); - - return ret; -} - static int hpet_ioctl_ieon(struct hpet_dev *devp) { struct hpet_timer __iomem *timer; @@ -553,7 +539,8 @@ static inline unsigned long hpet_time_div(struct hpets *hpets, } static int -hpet_ioctl_common(struct hpet_dev *devp, int cmd, unsigned long arg, int kernel) +hpet_ioctl_common(struct hpet_dev *devp, int cmd, unsigned long arg, + struct hpet_info *info) { struct hpet_timer __iomem *timer; struct hpet __iomem *hpet; @@ -594,23 +581,15 @@ hpet_ioctl_common(struct hpet_dev *devp, int cmd, unsigned long arg, int kernel) break; case HPET_INFO: { - struct hpet_info info; - if (devp->hd_ireqfreq) - info.hi_ireqfreq = + info->hi_ireqfreq = hpet_time_div(hpetp, devp->hd_ireqfreq); else - info.hi_ireqfreq = 0; - info.hi_flags = + info->hi_ireqfreq = 0; + info->hi_flags = readq(&timer->hpet_config) & Tn_PER_INT_CAP_MASK; - info.hi_hpet = hpetp->hp_which; - info.hi_timer = devp - hpetp->hp_dev; - if (kernel) - memcpy((void *)arg, &info, sizeof(info)); - else - if (copy_to_user((void __user *)arg, &info, - sizeof(info))) - err = -EFAULT; + info->hi_hpet = hpetp->hp_which; + info->hi_timer = devp - hpetp->hp_dev; break; } case HPET_EPI: @@ -636,7 +615,7 @@ hpet_ioctl_common(struct hpet_dev *devp, int cmd, unsigned long arg, int kernel) devp->hd_flags &= ~HPET_PERIODIC; break; case HPET_IRQFREQ: - if (!kernel && (arg > hpet_max_freq) && + if ((arg > hpet_max_freq) && !capable(CAP_SYS_RESOURCE)) { err = -EACCES; break; @@ -653,12 +632,63 @@ hpet_ioctl_common(struct hpet_dev *devp, int cmd, unsigned long arg, int kernel) return err; } +static long +hpet_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + struct hpet_info info; + int err; + + mutex_lock(&hpet_mutex); + err = hpet_ioctl_common(file->private_data, cmd, arg, &info); + mutex_unlock(&hpet_mutex); + + if ((cmd == HPET_INFO) && !err && + (copy_to_user((void __user *)arg, &info, sizeof(info)))) + err = -EFAULT; + + return err; +} + +#ifdef CONFIG_COMPAT +struct compat_hpet_info { + compat_ulong_t hi_ireqfreq; /* Hz */ + compat_ulong_t hi_flags; /* information */ + unsigned short hi_hpet; + unsigned short hi_timer; +}; + +static long +hpet_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + struct hpet_info info; + int err; + + mutex_lock(&hpet_mutex); + err = hpet_ioctl_common(file->private_data, cmd, arg, &info); + mutex_unlock(&hpet_mutex); + + if ((cmd == HPET_INFO) && !err) { + struct compat_hpet_info __user *u = compat_ptr(arg); + if (put_user(info.hi_ireqfreq, &u->hi_ireqfreq) || + put_user(info.hi_flags, &u->hi_flags) || + put_user(info.hi_hpet, &u->hi_hpet) || + put_user(info.hi_timer, &u->hi_timer)) + err = -EFAULT; + } + + return err; +} +#endif + static const struct file_operations hpet_fops = { .owner = THIS_MODULE, .llseek = no_llseek, .read = hpet_read, .poll = hpet_poll, .unlocked_ioctl = hpet_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = hpet_compat_ioctl, +#endif .open = hpet_open, .release = hpet_release, .fasync = hpet_fasync, diff --git a/drivers/char/raw.c b/drivers/char/raw.c index b38942f6bf3..24b2b9160aa 100644 --- a/drivers/char/raw.c +++ b/drivers/char/raw.c @@ -19,8 +19,8 @@ #include <linux/cdev.h> #include <linux/device.h> #include <linux/mutex.h> -#include <linux/smp_lock.h> #include <linux/gfp.h> +#include <linux/compat.h> #include <asm/uaccess.h> @@ -55,7 +55,6 @@ static int raw_open(struct inode *inode, struct file *filp) return 0; } - lock_kernel(); mutex_lock(&raw_mutex); /* @@ -82,7 +81,6 @@ static int raw_open(struct inode *inode, struct file *filp) bdev->bd_inode->i_mapping; filp->private_data = bdev; mutex_unlock(&raw_mutex); - unlock_kernel(); return 0; out2: @@ -91,7 +89,6 @@ out1: blkdev_put(bdev, filp->f_mode); out: mutex_unlock(&raw_mutex); - unlock_kernel(); return err; } @@ -125,20 +122,84 @@ static long raw_ioctl(struct file *filp, unsigned int command, unsigned long arg) { struct block_device *bdev = filp->private_data; - int ret; + return blkdev_ioctl(bdev, 0, command, arg); +} + +static int bind_set(int number, u64 major, u64 minor) +{ + dev_t dev = MKDEV(major, minor); + struct raw_device_data *rawdev; + int err = 0; - lock_kernel(); - ret = blkdev_ioctl(bdev, 0, command, arg); - unlock_kernel(); + if (number <= 0 || number >= MAX_RAW_MINORS) + return -EINVAL; - return ret; + if (MAJOR(dev) != major || MINOR(dev) != minor) + return -EINVAL; + + rawdev = &raw_devices[number]; + + /* + * This is like making block devices, so demand the + * same capability + */ + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + /* + * For now, we don't need to check that the underlying + * block device is present or not: we can do that when + * the raw device is opened. Just check that the + * major/minor numbers make sense. + */ + + if (MAJOR(dev) == 0 && dev != 0) + return -EINVAL; + + mutex_lock(&raw_mutex); + if (rawdev->inuse) { + mutex_unlock(&raw_mutex); + return -EBUSY; + } + if (rawdev->binding) { + bdput(rawdev->binding); + module_put(THIS_MODULE); + } + if (!dev) { + /* unbind */ + rawdev->binding = NULL; + device_destroy(raw_class, MKDEV(RAW_MAJOR, number)); + } else { + rawdev->binding = bdget(dev); + if (rawdev->binding == NULL) { + err = -ENOMEM; + } else { + dev_t raw = MKDEV(RAW_MAJOR, number); + __module_get(THIS_MODULE); + device_destroy(raw_class, raw); + device_create(raw_class, NULL, raw, NULL, + "raw%d", number); + } + } + mutex_unlock(&raw_mutex); + return err; } -static void bind_device(struct raw_config_request *rq) +static int bind_get(int number, dev_t *dev) { - device_destroy(raw_class, MKDEV(RAW_MAJOR, rq->raw_minor)); - device_create(raw_class, NULL, MKDEV(RAW_MAJOR, rq->raw_minor), NULL, - "raw%d", rq->raw_minor); + struct raw_device_data *rawdev; + struct block_device *bdev; + + if (number <= 0 || number >= MAX_RAW_MINORS) + return -EINVAL; + + rawdev = &raw_devices[number]; + + mutex_lock(&raw_mutex); + bdev = rawdev->binding; + *dev = bdev ? bdev->bd_dev : 0; + mutex_unlock(&raw_mutex); + return 0; } /* @@ -149,105 +210,78 @@ static long raw_ctl_ioctl(struct file *filp, unsigned int command, unsigned long arg) { struct raw_config_request rq; - struct raw_device_data *rawdev; - int err = 0; + dev_t dev; + int err; - lock_kernel(); switch (command) { case RAW_SETBIND: + if (copy_from_user(&rq, (void __user *) arg, sizeof(rq))) + return -EFAULT; + + return bind_set(rq.raw_minor, rq.block_major, rq.block_minor); + case RAW_GETBIND: + if (copy_from_user(&rq, (void __user *) arg, sizeof(rq))) + return -EFAULT; - /* First, find out which raw minor we want */ + err = bind_get(rq.raw_minor, &dev); + if (err) + return err; - if (copy_from_user(&rq, (void __user *) arg, sizeof(rq))) { - err = -EFAULT; - goto out; - } + rq.block_major = MAJOR(dev); + rq.block_minor = MINOR(dev); - if (rq.raw_minor <= 0 || rq.raw_minor >= MAX_RAW_MINORS) { - err = -EINVAL; - goto out; - } - rawdev = &raw_devices[rq.raw_minor]; - - if (command == RAW_SETBIND) { - dev_t dev; - - /* - * This is like making block devices, so demand the - * same capability - */ - if (!capable(CAP_SYS_ADMIN)) { - err = -EPERM; - goto out; - } - - /* - * For now, we don't need to check that the underlying - * block device is present or not: we can do that when - * the raw device is opened. Just check that the - * major/minor numbers make sense. - */ - - dev = MKDEV(rq.block_major, rq.block_minor); - if ((rq.block_major == 0 && rq.block_minor != 0) || - MAJOR(dev) != rq.block_major || - MINOR(dev) != rq.block_minor) { - err = -EINVAL; - goto out; - } - - mutex_lock(&raw_mutex); - if (rawdev->inuse) { - mutex_unlock(&raw_mutex); - err = -EBUSY; - goto out; - } - if (rawdev->binding) { - bdput(rawdev->binding); - module_put(THIS_MODULE); - } - if (rq.block_major == 0 && rq.block_minor == 0) { - /* unbind */ - rawdev->binding = NULL; - device_destroy(raw_class, - MKDEV(RAW_MAJOR, rq.raw_minor)); - } else { - rawdev->binding = bdget(dev); - if (rawdev->binding == NULL) - err = -ENOMEM; - else { - __module_get(THIS_MODULE); - bind_device(&rq); - } - } - mutex_unlock(&raw_mutex); - } else { - struct block_device *bdev; - - mutex_lock(&raw_mutex); - bdev = rawdev->binding; - if (bdev) { - rq.block_major = MAJOR(bdev->bd_dev); - rq.block_minor = MINOR(bdev->bd_dev); - } else { - rq.block_major = rq.block_minor = 0; - } - mutex_unlock(&raw_mutex); - if (copy_to_user((void __user *)arg, &rq, sizeof(rq))) { - err = -EFAULT; - goto out; - } - } - break; - default: - err = -EINVAL; - break; + if (copy_to_user((void __user *)arg, &rq, sizeof(rq))) + return -EFAULT; + + return 0; } -out: - unlock_kernel(); - return err; + + return -EINVAL; +} + +#ifdef CONFIG_COMPAT +struct raw32_config_request { + compat_int_t raw_minor; + compat_u64 block_major; + compat_u64 block_minor; +}; + +static long raw_ctl_compat_ioctl(struct file *file, unsigned int cmd, + unsigned long arg) +{ + struct raw32_config_request __user *user_req = compat_ptr(arg); + struct raw32_config_request rq; + dev_t dev; + int err = 0; + + switch (cmd) { + case RAW_SETBIND: + if (copy_from_user(&rq, user_req, sizeof(rq))) + return -EFAULT; + + return bind_set(rq.raw_minor, rq.block_major, rq.block_minor); + + case RAW_GETBIND: + if (copy_from_user(&rq, user_req, sizeof(rq))) + return -EFAULT; + + err = bind_get(rq.raw_minor, &dev); + if (err) + return err; + + rq.block_major = MAJOR(dev); + rq.block_minor = MINOR(dev); + + if (copy_to_user(user_req, &rq, sizeof(rq))) + return -EFAULT; + + return 0; + } + + return -EINVAL; } +#endif static const struct file_operations raw_fops = { .read = do_sync_read, @@ -263,6 +297,9 @@ static const struct file_operations raw_fops = { static const struct file_operations raw_ctl_fops = { .unlocked_ioctl = raw_ctl_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = raw_ctl_compat_ioctl, +#endif .open = raw_open, .owner = THIS_MODULE, }; diff --git a/drivers/char/tlclk.c b/drivers/char/tlclk.c index 80ea6bcfffd..e32cbf0c9a0 100644 --- a/drivers/char/tlclk.c +++ b/drivers/char/tlclk.c @@ -37,7 +37,7 @@ #include <linux/ioport.h> #include <linux/interrupt.h> #include <linux/spinlock.h> -#include <linux/smp_lock.h> +#include <linux/mutex.h> #include <linux/timer.h> #include <linux/sysfs.h> #include <linux/device.h> @@ -206,7 +206,7 @@ static int tlclk_open(struct inode *inode, struct file *filp) { int result; - lock_kernel(); + mutex_lock(&tlclk_mutex); if (test_and_set_bit(0, &useflags)) { result = -EBUSY; /* this legacy device is always one per system and it doesn't @@ -229,7 +229,7 @@ static int tlclk_open(struct inode *inode, struct file *filp) inb(TLCLK_REG6); /* Clear interrupt events */ out: - unlock_kernel(); + mutex_unlock(&tlclk_mutex); return result; } diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index 4cab0c6397e..7af44367262 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -73,7 +73,8 @@ source "drivers/gpu/drm/radeon/Kconfig" config DRM_I810 tristate "Intel I810" - depends on DRM && AGP && AGP_INTEL + # BKL usage in order to avoid AB-BA deadlocks, may become BROKEN_ON_SMP + depends on DRM && AGP && AGP_INTEL && BKL help Choose this option if you have an Intel I810 graphics card. If M is selected, the module will be called i810. AGP support is required @@ -86,6 +87,8 @@ choice config DRM_I830 tristate "i830 driver" + # BKL usage in order to avoid AB-BA deadlocks, i830 may get removed + depends on BKL help Choose this option if you have a system that has Intel 830M, 845G, 852GM, 855GM or 865G integrated graphics. If M is selected, the diff --git a/drivers/media/Kconfig b/drivers/media/Kconfig index a28541b2b1a..bad2cedb8d9 100644 --- a/drivers/media/Kconfig +++ b/drivers/media/Kconfig @@ -19,6 +19,7 @@ comment "Multimedia core support" config VIDEO_DEV tristate "Video For Linux" + depends on BKL # used in many drivers for ioctl handling, need to kill ---help--- V4L core support for video capture and overlay devices, webcams and AM/FM radio cards. diff --git a/drivers/media/dvb/bt8xx/dst_ca.c b/drivers/media/dvb/bt8xx/dst_ca.c index cf870516284..d75788b4e22 100644 --- a/drivers/media/dvb/bt8xx/dst_ca.c +++ b/drivers/media/dvb/bt8xx/dst_ca.c @@ -22,7 +22,7 @@ #include <linux/module.h> #include <linux/slab.h> #include <linux/init.h> -#include <linux/smp_lock.h> +#include <linux/mutex.h> #include <linux/string.h> #include <linux/dvb/ca.h> #include "dvbdev.h" @@ -52,6 +52,7 @@ } while(0) +static DEFINE_MUTEX(dst_ca_mutex); static unsigned int verbose = 5; module_param(verbose, int, 0644); MODULE_PARM_DESC(verbose, "verbose startup messages, default is 1 (yes)"); @@ -564,7 +565,7 @@ static long dst_ca_ioctl(struct file *file, unsigned int cmd, unsigned long ioct void __user *arg = (void __user *)ioctl_arg; int result = 0; - lock_kernel(); + mutex_lock(&dst_ca_mutex); dvbdev = file->private_data; state = (struct dst_state *)dvbdev->priv; p_ca_message = kmalloc(sizeof (struct ca_msg), GFP_KERNEL); @@ -652,7 +653,7 @@ static long dst_ca_ioctl(struct file *file, unsigned int cmd, unsigned long ioct kfree (p_ca_slot_info); kfree (p_ca_caps); - unlock_kernel(); + mutex_unlock(&dst_ca_mutex); return result; } diff --git a/drivers/media/dvb/dvb-core/dmxdev.c b/drivers/media/dvb/dvb-core/dmxdev.c index 0042306ea11..2de13b04b09 100644 --- a/drivers/media/dvb/dvb-core/dmxdev.c +++ b/drivers/media/dvb/dvb-core/dmxdev.c @@ -25,7 +25,6 @@ #include <linux/slab.h> #include <linux/vmalloc.h> #include <linux/module.h> -#include <linux/smp_lock.h> #include <linux/poll.h> #include <linux/ioctl.h> #include <linux/wait.h> @@ -1088,13 +1087,7 @@ static int dvb_demux_do_ioctl(struct file *file, static long dvb_demux_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { - int ret; - - lock_kernel(); - ret = dvb_usercopy(file, cmd, arg, dvb_demux_do_ioctl); - unlock_kernel(); - - return ret; + return dvb_usercopy(file, cmd, arg, dvb_demux_do_ioctl); } static unsigned int dvb_demux_poll(struct file *file, poll_table *wait) @@ -1186,13 +1179,7 @@ static int dvb_dvr_do_ioctl(struct file *file, static long dvb_dvr_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { - int ret; - - lock_kernel(); - ret = dvb_usercopy(file, cmd, arg, dvb_dvr_do_ioctl); - unlock_kernel(); - - return ret; + return dvb_usercopy(file, cmd, arg, dvb_dvr_do_ioctl); } static unsigned int dvb_dvr_poll(struct file *file, poll_table *wait) diff --git a/drivers/media/dvb/dvb-core/dvb_ca_en50221.c b/drivers/media/dvb/dvb-core/dvb_ca_en50221.c index cb97e6b8543..1723a984a52 100644 --- a/drivers/media/dvb/dvb-core/dvb_ca_en50221.c +++ b/drivers/media/dvb/dvb-core/dvb_ca_en50221.c @@ -1259,13 +1259,7 @@ static int dvb_ca_en50221_io_do_ioctl(struct file *file, static long dvb_ca_en50221_io_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { - int ret; - - lock_kernel(); - ret = dvb_usercopy(file, cmd, arg, dvb_ca_en50221_io_do_ioctl); - unlock_kernel(); - - return ret; + return dvb_usercopy(file, cmd, arg, dvb_ca_en50221_io_do_ioctl); } diff --git a/drivers/media/dvb/dvb-core/dvb_net.c b/drivers/media/dvb/dvb-core/dvb_net.c index 6c3a8a06cca..a08032284cb 100644 --- a/drivers/media/dvb/dvb-core/dvb_net.c +++ b/drivers/media/dvb/dvb-core/dvb_net.c @@ -59,7 +59,6 @@ #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/dvb/net.h> -#include <linux/smp_lock.h> #include <linux/uio.h> #include <asm/uaccess.h> #include <linux/crc32.h> @@ -1445,13 +1444,7 @@ static int dvb_net_do_ioctl(struct file *file, static long dvb_net_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { - int ret; - - lock_kernel(); - ret = dvb_usercopy(file, cmd, arg, dvb_net_do_ioctl); - unlock_kernel(); - - return ret; + return dvb_usercopy(file, cmd, arg, dvb_net_do_ioctl); } static int dvb_net_close(struct inode *inode, struct file *file) diff --git a/drivers/media/dvb/dvb-core/dvbdev.c b/drivers/media/dvb/dvb-core/dvbdev.c index b915c39d782..28f486edcaf 100644 --- a/drivers/media/dvb/dvb-core/dvbdev.c +++ b/drivers/media/dvb/dvb-core/dvbdev.c @@ -32,9 +32,9 @@ #include <linux/fs.h> #include <linux/cdev.h> #include <linux/mutex.h> -#include <linux/smp_lock.h> #include "dvbdev.h" +static DEFINE_MUTEX(dvbdev_mutex); static int dvbdev_debug; module_param(dvbdev_debug, int, 0644); @@ -68,7 +68,7 @@ static int dvb_device_open(struct inode *inode, struct file *file) { struct dvb_device *dvbdev; - lock_kernel(); + mutex_lock(&dvbdev_mutex); down_read(&minor_rwsem); dvbdev = dvb_minors[iminor(inode)]; @@ -91,12 +91,12 @@ static int dvb_device_open(struct inode *inode, struct file *file) } fops_put(old_fops); up_read(&minor_rwsem); - unlock_kernel(); + mutex_unlock(&dvbdev_mutex); return err; } fail: up_read(&minor_rwsem); - unlock_kernel(); + mutex_unlock(&dvbdev_mutex); return -ENODEV; } @@ -158,7 +158,6 @@ long dvb_generic_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { struct dvb_device *dvbdev = file->private_data; - int ret; if (!dvbdev) return -ENODEV; @@ -166,11 +165,7 @@ long dvb_generic_ioctl(struct file *file, if (!dvbdev->kernel_ioctl) return -EINVAL; - lock_kernel(); - ret = dvb_usercopy(file, cmd, arg, dvbdev->kernel_ioctl); - unlock_kernel(); - - return ret; + return dvb_usercopy(file, cmd, arg, dvbdev->kernel_ioctl); } EXPORT_SYMBOL(dvb_generic_ioctl); @@ -421,8 +416,10 @@ int dvb_usercopy(struct file *file, } /* call driver */ + mutex_lock(&dvbdev_mutex); if ((err = func(file, cmd, parg)) == -ENOIOCTLCMD) err = -EINVAL; + mutex_unlock(&dvbdev_mutex); if (err < 0) goto out; diff --git a/drivers/media/video/dabusb.c b/drivers/media/video/dabusb.c index 5b176bd7afd..f3e25e91366 100644 --- a/drivers/media/video/dabusb.c +++ b/drivers/media/video/dabusb.c @@ -32,7 +32,6 @@ #include <linux/list.h> #include <linux/vmalloc.h> #include <linux/slab.h> -#include <linux/smp_lock.h> #include <linux/init.h> #include <asm/uaccess.h> #include <asm/atomic.h> @@ -621,7 +620,6 @@ static int dabusb_open (struct inode *inode, struct file *file) if (devnum < DABUSB_MINOR || devnum >= (DABUSB_MINOR + NRDABUSB)) return -EIO; - lock_kernel(); s = &dabusb[devnum - DABUSB_MINOR]; dbg("dabusb_open"); @@ -630,21 +628,17 @@ static int dabusb_open (struct inode *inode, struct file *file) while (!s->usbdev || s->opened) { mutex_unlock(&s->mutex); - if (file->f_flags & O_NONBLOCK) { + if (file->f_flags & O_NONBLOCK) return -EBUSY; - } msleep_interruptible(500); - if (signal_pending (current)) { - unlock_kernel(); + if (signal_pending (current)) return -EAGAIN; - } mutex_lock(&s->mutex); } if (usb_set_interface (s->usbdev, _DABUSB_IF, 1) < 0) { mutex_unlock(&s->mutex); dev_err(&s->usbdev->dev, "set_interface failed\n"); - unlock_kernel(); return -EINVAL; } s->opened = 1; @@ -654,7 +648,6 @@ static int dabusb_open (struct inode *inode, struct file *file) file->private_data = s; r = nonseekable_open(inode, file); - unlock_kernel(); return r; } @@ -689,17 +682,13 @@ static long dabusb_ioctl (struct file *file, unsigned int cmd, unsigned long arg dbg("dabusb_ioctl"); - lock_kernel(); - if (s->remove_pending) { - unlock_kernel(); + if (s->remove_pending) return -EIO; - } mutex_lock(&s->mutex); if (!s->usbdev) { mutex_unlock(&s->mutex); - unlock_kernel(); return -EIO; } @@ -735,7 +724,6 @@ static long dabusb_ioctl (struct file *file, unsigned int cmd, unsigned long arg break; } mutex_unlock(&s->mutex); - unlock_kernel(); return ret; } diff --git a/drivers/net/appletalk/Kconfig b/drivers/net/appletalk/Kconfig index 0a0e0cd81a2..20f97e7017c 100644 --- a/drivers/net/appletalk/Kconfig +++ b/drivers/net/appletalk/Kconfig @@ -3,6 +3,7 @@ # config ATALK tristate "Appletalk protocol support" + depends on BKL # waiting to be removed from net/appletalk/ddp.c select LLC ---help--- AppleTalk is the protocol that Apple computers can use to communicate diff --git a/drivers/pnp/isapnp/proc.c b/drivers/pnp/isapnp/proc.c index 3f94edab25f..e73ebefdf3e 100644 --- a/drivers/pnp/isapnp/proc.c +++ b/drivers/pnp/isapnp/proc.c @@ -31,8 +31,9 @@ static struct proc_dir_entry *isapnp_proc_bus_dir = NULL; static loff_t isapnp_proc_bus_lseek(struct file *file, loff_t off, int whence) { loff_t new = -1; + struct inode *inode = file->f_path.dentry->d_inode; - lock_kernel(); + mutex_lock(&inode->i_mutex); switch (whence) { case 0: new = off; @@ -44,12 +45,12 @@ static loff_t isapnp_proc_bus_lseek(struct file *file, loff_t off, int whence) new = 256 + off; break; } - if (new < 0 || new > 256) { - unlock_kernel(); - return -EINVAL; - } - unlock_kernel(); - return (file->f_pos = new); + if (new < 0 || new > 256) + new = -EINVAL; + else + file->f_pos = new; + mutex_unlock(&inode->i_mutex); + return new; } static ssize_t isapnp_proc_bus_read(struct file *file, char __user * buf, diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index 8373ca0de8e..38e6fa9a201 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -21,7 +21,6 @@ #include <linux/hdreg.h> #include <linux/async.h> #include <linux/mutex.h> -#include <linux/smp_lock.h> #include <asm/ccwdev.h> #include <asm/ebcdic.h> @@ -2236,7 +2235,6 @@ static int dasd_open(struct block_device *bdev, fmode_t mode) if (!block) return -ENODEV; - lock_kernel(); base = block->base; atomic_inc(&block->open_count); if (test_bit(DASD_FLAG_OFFLINE, &base->flags)) { @@ -2271,14 +2269,12 @@ static int dasd_open(struct block_device *bdev, fmode_t mode) goto out; } - unlock_kernel(); return 0; out: module_put(base->discipline->owner); unlock: atomic_dec(&block->open_count); - unlock_kernel(); return rc; } @@ -2286,10 +2282,8 @@ static int dasd_release(struct gendisk *disk, fmode_t mode) { struct dasd_block *block = disk->private_data; - lock_kernel(); atomic_dec(&block->open_count); module_put(block->base->discipline->owner); - unlock_kernel(); return 0; } diff --git a/drivers/s390/block/dasd_ioctl.c b/drivers/s390/block/dasd_ioctl.c index 1557214944f..26075e95b1b 100644 --- a/drivers/s390/block/dasd_ioctl.c +++ b/drivers/s390/block/dasd_ioctl.c @@ -16,7 +16,6 @@ #include <linux/major.h> #include <linux/fs.h> #include <linux/blkpg.h> -#include <linux/smp_lock.h> #include <linux/slab.h> #include <asm/compat.h> #include <asm/ccwdev.h> @@ -370,9 +369,8 @@ static int dasd_ioctl_readall_cmb(struct dasd_block *block, unsigned int cmd, return ret; } -static int -dasd_do_ioctl(struct block_device *bdev, fmode_t mode, - unsigned int cmd, unsigned long arg) +int dasd_ioctl(struct block_device *bdev, fmode_t mode, + unsigned int cmd, unsigned long arg) { struct dasd_block *block = bdev->bd_disk->private_data; void __user *argp; @@ -430,14 +428,3 @@ dasd_do_ioctl(struct block_device *bdev, fmode_t mode, return -EINVAL; } } - -int dasd_ioctl(struct block_device *bdev, fmode_t mode, - unsigned int cmd, unsigned long arg) -{ - int rc; - - lock_kernel(); - rc = dasd_do_ioctl(bdev, mode, cmd, arg); - unlock_kernel(); - return rc; -} diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c index 2bd72aa34c5..9b43ae94beb 100644 --- a/drivers/s390/block/dcssblk.c +++ b/drivers/s390/block/dcssblk.c @@ -14,7 +14,6 @@ #include <linux/init.h> #include <linux/slab.h> #include <linux/blkdev.h> -#include <linux/smp_lock.h> #include <linux/completion.h> #include <linux/interrupt.h> #include <linux/platform_device.h> @@ -776,7 +775,6 @@ dcssblk_open(struct block_device *bdev, fmode_t mode) struct dcssblk_dev_info *dev_info; int rc; - lock_kernel(); dev_info = bdev->bd_disk->private_data; if (NULL == dev_info) { rc = -ENODEV; @@ -786,7 +784,6 @@ dcssblk_open(struct block_device *bdev, fmode_t mode) bdev->bd_block_size = 4096; rc = 0; out: - unlock_kernel(); return rc; } @@ -797,7 +794,6 @@ dcssblk_release(struct gendisk *disk, fmode_t mode) struct segment_info *entry; int rc; - lock_kernel(); if (!dev_info) { rc = -ENODEV; goto out; @@ -815,7 +811,6 @@ dcssblk_release(struct gendisk *disk, fmode_t mode) up_write(&dcssblk_devices_sem); rc = 0; out: - unlock_kernel(); return rc; } diff --git a/drivers/staging/cx25821/Kconfig b/drivers/staging/cx25821/Kconfig index df7756a95fa..813cb355ac0 100644 --- a/drivers/staging/cx25821/Kconfig +++ b/drivers/staging/cx25821/Kconfig @@ -1,6 +1,7 @@ config VIDEO_CX25821 tristate "Conexant cx25821 support" depends on DVB_CORE && VIDEO_DEV && PCI && I2C && INPUT + depends on BKL # please fix select I2C_ALGOBIT select VIDEO_BTCX select VIDEO_TVEEPROM diff --git a/drivers/staging/easycap/Kconfig b/drivers/staging/easycap/Kconfig index bd96f39f273..9d5fe4ddc30 100644 --- a/drivers/staging/easycap/Kconfig +++ b/drivers/staging/easycap/Kconfig @@ -1,6 +1,7 @@ config EASYCAP tristate "EasyCAP USB ID 05e1:0408 support" depends on USB && VIDEO_DEV + depends on BKL # please fix ---help--- This is an integrated audio/video driver for EasyCAP cards with diff --git a/drivers/staging/go7007/Kconfig b/drivers/staging/go7007/Kconfig index e47f683a323..75fa4680552 100644 --- a/drivers/staging/go7007/Kconfig +++ b/drivers/staging/go7007/Kconfig @@ -1,6 +1,7 @@ config VIDEO_GO7007 tristate "WIS GO7007 MPEG encoder support" depends on VIDEO_DEV && PCI && I2C && INPUT + depends on BKL # please fix depends on SND select VIDEOBUF_DMA_SG select VIDEO_IR diff --git a/drivers/staging/usbip/Kconfig b/drivers/staging/usbip/Kconfig index 2c1d10acb8b..b11ec379b5c 100644 --- a/drivers/staging/usbip/Kconfig +++ b/drivers/staging/usbip/Kconfig @@ -1,6 +1,6 @@ config USB_IP_COMMON tristate "USB IP support (EXPERIMENTAL)" - depends on USB && NET && EXPERIMENTAL + depends on USB && NET && EXPERIMENTAL && BKL default N ---help--- This enables pushing USB packets over IP to allow remote diff --git a/fs/Kconfig b/fs/Kconfig index 3d185308ec8..65781de44fc 100644 --- a/fs/Kconfig +++ b/fs/Kconfig @@ -50,6 +50,7 @@ endif # BLOCK config FILE_LOCKING bool "Enable POSIX file locking API" if EMBEDDED default y + select BKL # while lockd still uses it. help This option enables standard file locking support, required for filesystems like NFS and for the flock() system diff --git a/fs/adfs/Kconfig b/fs/adfs/Kconfig index e55182a7460..1dd5f34b3cf 100644 --- a/fs/adfs/Kconfig +++ b/fs/adfs/Kconfig @@ -1,6 +1,7 @@ config ADFS_FS tristate "ADFS file system support (EXPERIMENTAL)" depends on BLOCK && EXPERIMENTAL + depends on BKL # need to fix help The Acorn Disc Filing System is the standard file system of the RiscOS operating system which runs on Acorn's ARM-based Risc PC diff --git a/fs/autofs/Kconfig b/fs/autofs/Kconfig index 5f3bea90911..480e210c83a 100644 --- a/fs/autofs/Kconfig +++ b/fs/autofs/Kconfig @@ -1,5 +1,6 @@ config AUTOFS_FS tristate "Kernel automounter support" + depends on BKL # unfixable, just use autofs4 help The automounter is a tool to automatically mount remote file systems on demand. This implementation is partially kernel-based to reduce diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c index 03e59aa318e..d0ad09d5778 100644 --- a/fs/compat_ioctl.c +++ b/fs/compat_ioctl.c @@ -599,69 +599,6 @@ static int do_smb_getmountuid(unsigned int fd, unsigned int cmd, #define HIDPGETCONNLIST _IOR('H', 210, int) #define HIDPGETCONNINFO _IOR('H', 211, int) -#ifdef CONFIG_BLOCK -struct raw32_config_request -{ - compat_int_t raw_minor; - __u64 block_major; - __u64 block_minor; -} __attribute__((packed)); - -static int get_raw32_request(struct raw_config_request *req, struct raw32_config_request __user *user_req) -{ - int ret; - - if (!access_ok(VERIFY_READ, user_req, sizeof(struct raw32_config_request))) - return -EFAULT; - - ret = __get_user(req->raw_minor, &user_req->raw_minor); - ret |= __get_user(req->block_major, &user_req->block_major); - ret |= __get_user(req->block_minor, &user_req->block_minor); - - return ret ? -EFAULT : 0; -} - -static int set_raw32_request(struct raw_config_request *req, struct raw32_config_request __user *user_req) -{ - int ret; - - if (!access_ok(VERIFY_WRITE, user_req, sizeof(struct raw32_config_request))) - return -EFAULT; - - ret = __put_user(req->raw_minor, &user_req->raw_minor); - ret |= __put_user(req->block_major, &user_req->block_major); - ret |= __put_user(req->block_minor, &user_req->block_minor); - - return ret ? -EFAULT : 0; -} - -static int raw_ioctl(unsigned fd, unsigned cmd, - struct raw32_config_request __user *user_req) -{ - int ret; - - switch (cmd) { - case RAW_SETBIND: - default: { /* RAW_GETBIND */ - struct raw_config_request req; - mm_segment_t oldfs = get_fs(); - - if ((ret = get_raw32_request(&req, user_req))) - return ret; - - set_fs(KERNEL_DS); - ret = sys_ioctl(fd,cmd,(unsigned long)&req); - set_fs(oldfs); - - if ((!ret) && (cmd == RAW_GETBIND)) { - ret = set_raw32_request(&req, user_req); - } - break; - } - } - return ret; -} -#endif /* CONFIG_BLOCK */ struct serial_struct32 { compat_int_t type; @@ -1262,9 +1199,6 @@ COMPATIBLE_IOCTL(SOUND_MIXER_PRIVATE5) COMPATIBLE_IOCTL(SOUND_MIXER_GETLEVELS) COMPATIBLE_IOCTL(SOUND_MIXER_SETLEVELS) COMPATIBLE_IOCTL(OSS_GETVERSION) -/* Raw devices */ -COMPATIBLE_IOCTL(RAW_SETBIND) -COMPATIBLE_IOCTL(RAW_GETBIND) /* SMB ioctls which do not need any translations */ COMPATIBLE_IOCTL(SMB_IOC_NEWCONN) /* Watchdog */ @@ -1523,10 +1457,6 @@ static long do_ioctl_trans(int fd, unsigned int cmd, case MTIOCGET32: case MTIOCPOS32: return mt_ioctl_trans(fd, cmd, argp); - /* Raw devices */ - case RAW_SETBIND: - case RAW_GETBIND: - return raw_ioctl(fd, cmd, argp); #endif /* One SMB ioctl needs translations. */ #define SMB_IOC_GETMOUNTUID_32 _IOR('u', 1, compat_uid_t) diff --git a/fs/hpfs/Kconfig b/fs/hpfs/Kconfig index 56bd15c5bf6..63b6f563231 100644 --- a/fs/hpfs/Kconfig +++ b/fs/hpfs/Kconfig @@ -1,6 +1,7 @@ config HPFS_FS tristate "OS/2 HPFS file system support" depends on BLOCK + depends on BKL # nontrivial to fix help OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS is the file system used for organizing files on OS/2 hard disk diff --git a/fs/nfs/Kconfig b/fs/nfs/Kconfig index f7e13db613c..b950415d7c4 100644 --- a/fs/nfs/Kconfig +++ b/fs/nfs/Kconfig @@ -1,6 +1,7 @@ config NFS_FS tristate "NFS client support" depends on INET && FILE_LOCKING + depends on BKL # fix as soon as lockd is done select LOCKD select SUNRPC select NFS_ACL_SUPPORT if NFS_V3_ACL diff --git a/fs/nfsd/Kconfig b/fs/nfsd/Kconfig index 4264377552e..7cf4ddafb4a 100644 --- a/fs/nfsd/Kconfig +++ b/fs/nfsd/Kconfig @@ -2,6 +2,7 @@ config NFSD tristate "NFS server support" depends on INET depends on FILE_LOCKING + depends on BKL # fix as soon as lockd is done select LOCKD select SUNRPC select EXPORTFS diff --git a/fs/smbfs/Kconfig b/fs/smbfs/Kconfig index e668127c8b2..2bc24a8c403 100644 --- a/fs/smbfs/Kconfig +++ b/fs/smbfs/Kconfig @@ -1,5 +1,6 @@ config SMB_FS tristate "SMB file system support (OBSOLETE, please use CIFS)" + depends on BKL # probably unfixable depends on INET select NLS help diff --git a/fs/udf/Kconfig b/fs/udf/Kconfig index 0e0e99bd6bc..f8def3c8ea4 100644 --- a/fs/udf/Kconfig +++ b/fs/udf/Kconfig @@ -1,5 +1,6 @@ config UDF_FS tristate "UDF file system support" + depends on BKL # needs serious work to remove select CRC_ITU_T help This is the new file system used on some CD-ROMs and DVDs. Say Y if diff --git a/fs/ufs/Kconfig b/fs/ufs/Kconfig index e4f10a40768..30c8f223253 100644 --- a/fs/ufs/Kconfig +++ b/fs/ufs/Kconfig @@ -1,6 +1,7 @@ config UFS_FS tristate "UFS file system support (read only)" depends on BLOCK + depends on BKL # probably fixable help BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD, OpenBSD and NeXTstep) use a file system called UFS. Some System V diff --git a/include/linux/smp_lock.h b/include/linux/smp_lock.h index 2ea1dd1ba21..291f721144c 100644 --- a/include/linux/smp_lock.h +++ b/include/linux/smp_lock.h @@ -54,12 +54,15 @@ static inline void cycle_kernel_lock(void) #else +#ifdef CONFIG_BKL /* provoke build bug if not set */ #define lock_kernel() #define unlock_kernel() -#define release_kernel_lock(task) do { } while(0) #define cycle_kernel_lock() do { } while(0) -#define reacquire_kernel_lock(task) 0 #define kernel_locked() 1 +#endif /* CONFIG_BKL */ + +#define release_kernel_lock(task) do { } while(0) +#define reacquire_kernel_lock(task) 0 #endif /* CONFIG_LOCK_KERNEL */ #endif /* __LINUX_SMPLOCK_H */ diff --git a/init/Kconfig b/init/Kconfig index 36890f0c845..be85a0ab1b8 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -71,7 +71,7 @@ config BROKEN_ON_SMP config LOCK_KERNEL bool - depends on SMP || PREEMPT + depends on (SMP || PREEMPT) && BKL default y config INIT_ENV_ARG_LIMIT diff --git a/init/main.c b/init/main.c index 9684c9670b4..e59af24a0b7 100644 --- a/init/main.c +++ b/init/main.c @@ -424,7 +424,6 @@ static void __init setup_command_line(char *command_line) static __initdata DECLARE_COMPLETION(kthreadd_done); static noinline void __init_refok rest_init(void) - __releases(kernel_lock) { int pid; @@ -818,7 +817,6 @@ static void run_init_process(const char *init_filename) * makes it inline to init() and it becomes part of init.text section */ static noinline int init_post(void) - __releases(kernel_lock) { /* need to finish all async __init code before freeing the memory */ async_synchronize_full(); diff --git a/kernel/rtmutex-tester.c b/kernel/rtmutex-tester.c index a56f629b057..66cb89bc5ef 100644 --- a/kernel/rtmutex-tester.c +++ b/kernel/rtmutex-tester.c @@ -76,7 +76,9 @@ static int handle_op(struct test_thread_data *td, int lockwakeup) } if (!lockwakeup && td->bkl == 4) { +#ifdef CONFIG_LOCK_KERNEL unlock_kernel(); +#endif td->bkl = 0; } return 0; @@ -133,14 +135,18 @@ static int handle_op(struct test_thread_data *td, int lockwakeup) if (td->bkl) return 0; td->bkl = 1; +#ifdef CONFIG_LOCK_KERNEL lock_kernel(); +#endif td->bkl = 4; return 0; case RTTEST_UNLOCKBKL: if (td->bkl != 4) break; +#ifdef CONFIG_LOCK_KERNEL unlock_kernel(); +#endif td->bkl = 0; return 0; diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c index 959f8d6c8cc..5328e8779d4 100644 --- a/kernel/trace/blktrace.c +++ b/kernel/trace/blktrace.c @@ -23,7 +23,6 @@ #include <linux/mutex.h> #include <linux/slab.h> #include <linux/debugfs.h> -#include <linux/smp_lock.h> #include <linux/time.h> #include <linux/uaccess.h> @@ -639,7 +638,6 @@ int blk_trace_ioctl(struct block_device *bdev, unsigned cmd, char __user *arg) if (!q) return -ENXIO; - lock_kernel(); mutex_lock(&bdev->bd_mutex); switch (cmd) { @@ -667,7 +665,6 @@ int blk_trace_ioctl(struct block_device *bdev, unsigned cmd, char __user *arg) } mutex_unlock(&bdev->bd_mutex); - unlock_kernel(); return ret; } @@ -1652,10 +1649,9 @@ static ssize_t sysfs_blk_trace_attr_show(struct device *dev, struct block_device *bdev; ssize_t ret = -ENXIO; - lock_kernel(); bdev = bdget(part_devt(p)); if (bdev == NULL) - goto out_unlock_kernel; + goto out; q = blk_trace_get_queue(bdev); if (q == NULL) @@ -1683,8 +1679,7 @@ out_unlock_bdev: mutex_unlock(&bdev->bd_mutex); out_bdput: bdput(bdev); -out_unlock_kernel: - unlock_kernel(); +out: return ret; } @@ -1714,11 +1709,10 @@ static ssize_t sysfs_blk_trace_attr_store(struct device *dev, ret = -ENXIO; - lock_kernel(); p = dev_to_part(dev); bdev = bdget(part_devt(p)); if (bdev == NULL) - goto out_unlock_kernel; + goto out; q = blk_trace_get_queue(bdev); if (q == NULL) @@ -1753,8 +1747,6 @@ out_unlock_bdev: mutex_unlock(&bdev->bd_mutex); out_bdput: bdput(bdev); -out_unlock_kernel: - unlock_kernel(); out: return ret ? ret : count; } diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 21ac83070a8..7b2a8ca97ad 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -461,6 +461,15 @@ config DEBUG_MUTEXES This feature allows mutex semantics violations to be detected and reported. +config BKL + bool "Big Kernel Lock" if (SMP || PREEMPT) + default y + help + This is the traditional lock that is used in old code instead + of proper locking. All drivers that use the BKL should depend + on this symbol. + Say Y here unless you are working on removing the BKL. + config DEBUG_LOCK_ALLOC bool "Lock debugging: detect incorrect freeing of live locks" depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT diff --git a/net/ipx/Kconfig b/net/ipx/Kconfig index e9ad0062fbb..02549cb2c32 100644 --- a/net/ipx/Kconfig +++ b/net/ipx/Kconfig @@ -3,6 +3,7 @@ # config IPX tristate "The IPX protocol" + depends on BKL # should be fixable select LLC ---help--- This is support for the Novell networking protocol, IPX, commonly diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c index 2b06410e584..29b11e06501 100644 --- a/net/sunrpc/cache.c +++ b/net/sunrpc/cache.c @@ -28,7 +28,6 @@ #include <linux/workqueue.h> #include <linux/mutex.h> #include <linux/pagemap.h> -#include <linux/smp_lock.h> #include <asm/ioctls.h> #include <linux/sunrpc/types.h> #include <linux/sunrpc/cache.h> @@ -1348,15 +1347,10 @@ static unsigned int cache_poll_procfs(struct file *filp, poll_table *wait) static long cache_ioctl_procfs(struct file *filp, unsigned int cmd, unsigned long arg) { - long ret; struct inode *inode = filp->f_path.dentry->d_inode; struct cache_detail *cd = PDE(inode)->data; - lock_kernel(); - ret = cache_ioctl(inode, filp, cmd, arg, cd); - unlock_kernel(); - - return ret; + return cache_ioctl(inode, filp, cmd, arg, cd); } static int cache_open_procfs(struct inode *inode, struct file *filp) @@ -1555,13 +1549,8 @@ static long cache_ioctl_pipefs(struct file *filp, { struct inode *inode = filp->f_dentry->d_inode; struct cache_detail *cd = RPC_I(inode)->private; - long ret; - lock_kernel(); - ret = cache_ioctl(inode, filp, cmd, arg, cd); - unlock_kernel(); - - return ret; + return cache_ioctl(inode, filp, cmd, arg, cd); } static int cache_open_pipefs(struct inode *inode, struct file *filp) diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c index 8c8eef2b8f2..28bcd52e3ce 100644 --- a/net/sunrpc/rpc_pipe.c +++ b/net/sunrpc/rpc_pipe.c @@ -27,7 +27,6 @@ #include <linux/workqueue.h> #include <linux/sunrpc/rpc_pipe_fs.h> #include <linux/sunrpc/cache.h> -#include <linux/smp_lock.h> static struct vfsmount *rpc_mount __read_mostly; static int rpc_mount_count; @@ -309,40 +308,33 @@ rpc_pipe_poll(struct file *filp, struct poll_table_struct *wait) return mask; } -static int -rpc_pipe_ioctl_unlocked(struct file *filp, unsigned int cmd, unsigned long arg) +static long +rpc_pipe_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { - struct rpc_inode *rpci = RPC_I(filp->f_path.dentry->d_inode); + struct inode *inode = filp->f_path.dentry->d_inode; + struct rpc_inode *rpci = RPC_I(inode); int len; switch (cmd) { case FIONREAD: - if (rpci->ops == NULL) + spin_lock(&inode->i_lock); + if (rpci->ops == NULL) { + spin_unlock(&inode->i_lock); return -EPIPE; + } len = rpci->pipelen; if (filp->private_data) { struct rpc_pipe_msg *msg; msg = (struct rpc_pipe_msg *)filp->private_data; len += msg->len - msg->copied; } + spin_unlock(&inode->i_lock); return put_user(len, (int __user *)arg); default: return -EINVAL; } } -static long -rpc_pipe_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) -{ - long ret; - - lock_kernel(); - ret = rpc_pipe_ioctl_unlocked(filp, cmd, arg); - unlock_kernel(); - - return ret; -} - static const struct file_operations rpc_pipe_fops = { .owner = THIS_MODULE, .llseek = no_llseek, diff --git a/net/x25/Kconfig b/net/x25/Kconfig index e6759c9660b..2196e55e4f6 100644 --- a/net/x25/Kconfig +++ b/net/x25/Kconfig @@ -5,6 +5,7 @@ config X25 tristate "CCITT X.25 Packet Layer (EXPERIMENTAL)" depends on EXPERIMENTAL + depends on BKL # should be fixable ---help--- X.25 is a set of standardized network protocols, similar in scope to frame relay; the one physical line from your box to the X.25 network |