diff options
| author | Oliver Neukum <oliver@neukum.org> | 2010-01-13 15:33:15 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-03-02 14:54:23 -0800 |
| commit | 86266452f80545285c14e20a8024f79c4fb88a86 (patch) | |
| tree | ebb0a287f9bf189737d4924536d18b36492fd330 /drivers/usb/class/usblp.c | |
| parent | f9de332ebf9df71892d52f7eb64af101a647349f (diff) | |
USB: Push BKL on open down into the drivers
Straightforward push into the drivers to allow
auditing individual drivers separately
Signed-off-by: Oliver Neukum <oliver@neukum.org>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/class/usblp.c')
| -rw-r--r-- | drivers/usb/class/usblp.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/class/usblp.c b/drivers/usb/class/usblp.c index 93b5f85d7ce..d53f9499f93 100644 --- a/drivers/usb/class/usblp.c +++ b/drivers/usb/class/usblp.c @@ -56,6 +56,7 @@ #include <linux/slab.h> #include <linux/lp.h> #include <linux/mutex.h> +#include <linux/smp_lock.h> #undef DEBUG #include <linux/usb.h> @@ -395,6 +396,7 @@ static int usblp_open(struct inode *inode, struct file *file) if (minor < 0) return -ENODEV; + lock_kernel(); mutex_lock (&usblp_mutex); retval = -ENODEV; @@ -434,6 +436,7 @@ static int usblp_open(struct inode *inode, struct file *file) } out: mutex_unlock (&usblp_mutex); + unlock_kernel(); return retval; } |