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authorOliver Neukum <oliver@neukum.org>2010-01-13 09:33:15 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2010-03-02 17:54:23 -0500
commit86266452f80545285c14e20a8024f79c4fb88a86 (patch)
treeebb0a287f9bf189737d4924536d18b36492fd330 /drivers/usb/class/cdc-wdm.c
parentf9de332ebf9df71892d52f7eb64af101a647349f (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/cdc-wdm.c')
-rw-r--r--drivers/usb/class/cdc-wdm.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
index 18aafcb08fc8..b75a3d8bb02f 100644
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -19,6 +19,7 @@
19#include <linux/uaccess.h> 19#include <linux/uaccess.h>
20#include <linux/bitops.h> 20#include <linux/bitops.h>
21#include <linux/poll.h> 21#include <linux/poll.h>
22#include <linux/smp_lock.h>
22#include <linux/usb.h> 23#include <linux/usb.h>
23#include <linux/usb/cdc.h> 24#include <linux/usb/cdc.h>
24#include <asm/byteorder.h> 25#include <asm/byteorder.h>
@@ -516,6 +517,7 @@ static int wdm_open(struct inode *inode, struct file *file)
516 struct usb_interface *intf; 517 struct usb_interface *intf;
517 struct wdm_device *desc; 518 struct wdm_device *desc;
518 519
520 lock_kernel();
519 mutex_lock(&wdm_mutex); 521 mutex_lock(&wdm_mutex);
520 intf = usb_find_interface(&wdm_driver, minor); 522 intf = usb_find_interface(&wdm_driver, minor);
521 if (!intf) 523 if (!intf)
@@ -548,6 +550,7 @@ static int wdm_open(struct inode *inode, struct file *file)
548 usb_autopm_put_interface(desc->intf); 550 usb_autopm_put_interface(desc->intf);
549out: 551out:
550 mutex_unlock(&wdm_mutex); 552 mutex_unlock(&wdm_mutex);
553 unlock_kernel();
551 return rv; 554 return rv;
552} 555}
553 556