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authorMilan Svoboda <msvoboda@ra.rockwell.com>2006-06-26 07:48:00 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2006-09-27 11:58:52 -0700
commitba307f5828b1b4a1348d99c4f430a0cf3beeae2f (patch)
tree86bc891c6be4b8e48da2f7806526ab3a15ee4aa9 /drivers/usb/gadget/inode.c
parent8a7471aba19dc526978a03bfe2e3c122712b5900 (diff)
USB: gadgetfs: protect ep_release with lock
This patch adds mutex protection to ep_release. 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/inode.c')
-rw-r--r--drivers/usb/gadget/inode.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c
index 72c88aa94d5..ab508858f34 100644
--- a/drivers/usb/gadget/inode.c
+++ b/drivers/usb/gadget/inode.c
@@ -477,6 +477,10 @@ static int
ep_release (struct inode *inode, struct file *fd)
{
struct ep_data *data = fd->private_data;
+ int value;
+
+ if ((value = down_interruptible(&data->lock)) < 0)
+ return value;
/* clean up if this can be reopened */
if (data->state != STATE_EP_UNBOUND) {
@@ -485,6 +489,7 @@ ep_release (struct inode *inode, struct file *fd)
data->hs_desc.bDescriptorType = 0;
usb_ep_disable(data->ep);
}
+ up (&data->lock);
put_ep (data);
return 0;
}