From: Milan Svoboda <[EMAIL PROTECTED]>
This patch adds mutex protection to ep_release.
Signed-off-by: Milan Svoboda <[EMAIL PROTECTED]>
Signed-off-by: David Brownell <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
---
drivers/usb/gadget/inode.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c
index 72c88aa..ab50885 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
data->hs_desc.bDescriptorType = 0;
usb_ep_disable(data->ep);
}
+ up (&data->lock);
put_ep (data);
return 0;
}
--
1.4.2.1
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