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| author | Milan Svoboda <msvoboda@ra.rockwell.com> | 2006-06-26 07:46:00 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-09-27 11:58:52 -0700 |
| commit | 07cb7f23d07aa4d197dbeb123eb9719c176190ee (patch) | |
| tree | 9cecc8aa069b5ed1550106dab1aab5e6c42eefc7 /drivers/usb/gadget | |
| parent | 17efe155253e3f81caa6cc57ec2af1c128618698 (diff) | |
| download | linux-rpi-07cb7f23d07aa4d197dbeb123eb9719c176190ee.tar.gz linux-rpi-07cb7f23d07aa4d197dbeb123eb9719c176190ee.tar.bz2 linux-rpi-07cb7f23d07aa4d197dbeb123eb9719c176190ee.zip | |
USB: correct locking in gadgetfs_disconnect
This patch moves spin_lock (&dev->lock) before first use of dev.
I think that test to the state of device should be protected with
this spin_lock...
Signed-off-by: Milan Svoboda <msvoboda@ra.rockwell.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/gadget')
| -rw-r--r-- | drivers/usb/gadget/inode.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c index 2a7162d89799..da85732fa993 100644 --- a/drivers/usb/gadget/inode.c +++ b/drivers/usb/gadget/inode.c @@ -1696,16 +1696,17 @@ gadgetfs_disconnect (struct usb_gadget *gadget) { struct dev_data *dev = get_gadget_data (gadget); + spin_lock (&dev->lock); if (dev->state == STATE_UNCONNECTED) { DBG (dev, "already unconnected\n"); - return; + goto exit; } dev->state = STATE_UNCONNECTED; INFO (dev, "disconnected\n"); - spin_lock (&dev->lock); next_event (dev, GADGETFS_DISCONNECT); ep0_readable (dev); +exit: spin_unlock (&dev->lock); } |