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authorOliver Neukum <oliver@neukum.org>2010-01-13 15:33:15 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2010-03-02 14:54:23 -0800
commit86266452f80545285c14e20a8024f79c4fb88a86 (patch)
treeebb0a287f9bf189737d4924536d18b36492fd330 /drivers/usb/usb-skeleton.c
parentf9de332ebf9df71892d52f7eb64af101a647349f (diff)
downloadop-kernel-dev-86266452f80545285c14e20a8024f79c4fb88a86.zip
op-kernel-dev-86266452f80545285c14e20a8024f79c4fb88a86.tar.gz
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/usb-skeleton.c')
-rw-r--r--drivers/usb/usb-skeleton.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/usb-skeleton.c b/drivers/usb/usb-skeleton.c
index 6152278..e94176b 100644
--- a/drivers/usb/usb-skeleton.c
+++ b/drivers/usb/usb-skeleton.c
@@ -18,6 +18,7 @@
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/kref.h>
+#include <linux/smp_lock.h>
#include <linux/uaccess.h>
#include <linux/usb.h>
#include <linux/mutex.h>
@@ -90,6 +91,7 @@ static int skel_open(struct inode *inode, struct file *file)
int subminor;
int retval = 0;
+ lock_kernel();
subminor = iminor(inode);
interface = usb_find_interface(&skel_driver, subminor);
@@ -135,6 +137,7 @@ static int skel_open(struct inode *inode, struct file *file)
mutex_unlock(&dev->io_mutex);
exit:
+ unlock_kernel();
return retval;
}
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