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authorLinus Torvalds <torvalds@linux-foundation.org>2013-05-23 09:26:32 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-05-23 09:26:32 -0700
commit5cc0c03823ca18c490f8223f85ed40f2a9d936c4 (patch)
treea05b7a2a1153efff01a78dc54e2102420e2c29bb /drivers/misc
parentb64194068bbbdef3cc235f5459616a330f3b7724 (diff)
parentb5325a02aa84c794cf520d6d68cae4b150988a32 (diff)
Merge tag 'char-misc-3.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg Kroah-Hartman: "Here are some small char/misc driver fixes for 3.10-rc2. Nothing major here, just a number of fixes for things that people have reported, and a MAINTAINERS update for the recent changes for the hyperv files that went into 3.10-rc1." * tag 'char-misc-3.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: ttyprintk: Fix NULL pointer deref by setting tty_port ops after initializing port uio: UIO_DMEM_GENIRQ should depend on HAS_DMA MAINTAINERS: update Hyper-V file list mei: bus: Reset event_cb when disabling a device Drivers: hv: Fix a bug in get_vp_index() mei: fix out of array access to me clients array Char: lp, protect LPGETSTATUS with port_mutex dummy-irq: require the user to specify an IRQ number
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/dummy-irq.c6
-rw-r--r--drivers/misc/mei/bus.c2
-rw-r--r--drivers/misc/mei/main.c17
3 files changed, 15 insertions, 10 deletions
diff --git a/drivers/misc/dummy-irq.c b/drivers/misc/dummy-irq.c
index 7014167e2c6..c37eeedfe21 100644
--- a/drivers/misc/dummy-irq.c
+++ b/drivers/misc/dummy-irq.c
@@ -19,7 +19,7 @@
#include <linux/irq.h>
#include <linux/interrupt.h>
-static int irq;
+static int irq = -1;
static irqreturn_t dummy_interrupt(int irq, void *dev_id)
{
@@ -36,6 +36,10 @@ static irqreturn_t dummy_interrupt(int irq, void *dev_id)
static int __init dummy_irq_init(void)
{
+ if (irq < 0) {
+ printk(KERN_ERR "dummy-irq: no IRQ given. Use irq=N\n");
+ return -EIO;
+ }
if (request_irq(irq, &dummy_interrupt, IRQF_SHARED, "dummy_irq", &irq)) {
printk(KERN_ERR "dummy-irq: cannot register IRQ %d\n", irq);
return -EIO;
diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c
index 1e935eacaa7..9ecd49a7be1 100644
--- a/drivers/misc/mei/bus.c
+++ b/drivers/misc/mei/bus.c
@@ -496,6 +496,8 @@ int mei_cl_disable_device(struct mei_cl_device *device)
}
}
+ device->event_cb = NULL;
+
mutex_unlock(&dev->device_lock);
if (!device->ops || !device->ops->disable)
diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c
index 7c44c8dbae4..053139f6108 100644
--- a/drivers/misc/mei/main.c
+++ b/drivers/misc/mei/main.c
@@ -489,11 +489,16 @@ static int mei_ioctl_connect_client(struct file *file,
/* find ME client we're trying to connect to */
i = mei_me_cl_by_uuid(dev, &data->in_client_uuid);
- if (i >= 0 && !dev->me_clients[i].props.fixed_address) {
- cl->me_client_id = dev->me_clients[i].client_id;
- cl->state = MEI_FILE_CONNECTING;
+ if (i < 0 || dev->me_clients[i].props.fixed_address) {
+ dev_dbg(&dev->pdev->dev, "Cannot connect to FW Client UUID = %pUl\n",
+ &data->in_client_uuid);
+ rets = -ENODEV;
+ goto end;
}
+ cl->me_client_id = dev->me_clients[i].client_id;
+ cl->state = MEI_FILE_CONNECTING;
+
dev_dbg(&dev->pdev->dev, "Connect to FW Client ID = %d\n",
cl->me_client_id);
dev_dbg(&dev->pdev->dev, "FW Client - Protocol Version = %d\n",
@@ -527,11 +532,6 @@ static int mei_ioctl_connect_client(struct file *file,
goto end;
}
- if (cl->state != MEI_FILE_CONNECTING) {
- rets = -ENODEV;
- goto end;
- }
-
/* prepare the output buffer */
client = &data->out_client_properties;
@@ -543,7 +543,6 @@ static int mei_ioctl_connect_client(struct file *file,
rets = mei_cl_connect(cl, file);
end:
- dev_dbg(&dev->pdev->dev, "free connect cb memory.");
return rets;
}