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usbdev: BKL pushdown

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Add explicit lock_kernel() calls to usbdev_open()

Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Jonathan Corbet
2008-05-16 14:25:20 -06:00
parent 1af46fd72d
commit b5b4aa67da
1 changed files with 2 additions and 0 deletions
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2
drivers/usb/core/devio.c
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@@ -565,6 +565,7 @@ static int usbdev_open(struct inode *inode, struct file *file)
struct dev_state *ps; struct dev_state *ps;
int ret; int ret;
lock_kernel();
/* Protect against simultaneous removal or release */ /* Protect against simultaneous removal or release */
mutex_lock(&usbfs_mutex); mutex_lock(&usbfs_mutex);
@@ -611,6 +612,7 @@ static int usbdev_open(struct inode *inode, struct file *file)
if (ret) if (ret)
kfree(ps); kfree(ps);
mutex_unlock(&usbfs_mutex); mutex_unlock(&usbfs_mutex);
unlock_kernel();
return ret; return ret;
} }