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authorJiri Kosina <jkosina@suse.cz>2009-11-05 16:01:13 +0100
committerJiri Kosina <jkosina@suse.cz>2009-11-05 18:59:03 +0100
commit6c857730438cceb56a94ade3029899f52adf3b90 (patch)
tree20b0bf5803f025a6f6fa826cc14560b174c0ed84 /drivers/hid
parent80f506918fdaaca6b574ba931536a58ce015c7be (diff)
HID: remove BKL from hiddev_ioctl_usage()
The race between ioctl and disconnect is guarded by low level hiddev device mutex (existancelock) since the commit 07903407 ("HID: hiddev cleanup -- handle all error conditions properly"), therefore we can remove the lock_kernel() from hiddev_ioctl_usage(). Acked-by: Oliver Neukum <oliver@neukum.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid')
-rw-r--r--drivers/hid/usbhid/hiddev.c5
1 files changed, 0 insertions, 5 deletions
diff --git a/drivers/hid/usbhid/hiddev.c b/drivers/hid/usbhid/hiddev.c
index 8b6ee247bfe..867e08433e4 100644
--- a/drivers/hid/usbhid/hiddev.c
+++ b/drivers/hid/usbhid/hiddev.c
@@ -450,7 +450,6 @@ static noinline int hiddev_ioctl_usage(struct hiddev *hiddev, unsigned int cmd,
uref_multi = kmalloc(sizeof(struct hiddev_usage_ref_multi), GFP_KERNEL);
if (!uref_multi)
return -ENOMEM;
- lock_kernel();
uref = &uref_multi->uref;
if (cmd == HIDIOCGUSAGES || cmd == HIDIOCSUSAGES) {
if (copy_from_user(uref_multi, user_arg,
@@ -528,7 +527,6 @@ static noinline int hiddev_ioctl_usage(struct hiddev *hiddev, unsigned int cmd,
case HIDIOCGCOLLECTIONINDEX:
i = field->usage[uref->usage_index].collection_index;
- unlock_kernel();
kfree(uref_multi);
return i;
case HIDIOCGUSAGES:
@@ -547,15 +545,12 @@ static noinline int hiddev_ioctl_usage(struct hiddev *hiddev, unsigned int cmd,
}
goodreturn:
- unlock_kernel();
kfree(uref_multi);
return 0;
fault:
- unlock_kernel();
kfree(uref_multi);
return -EFAULT;
inval:
- unlock_kernel();
kfree(uref_multi);
return -EINVAL;
}