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Commit ba307f58 authored by Milan Svoboda's avatar Milan Svoboda Committed by Greg Kroah-Hartman
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USB: gadgetfs: protect ep_release with lock 



This patch adds mutex protection to ep_release.

Signed-off-by: default avatarMilan Svoboda <msvoboda@ra.rockwell.com>
Signed-off-by: default avatarDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 8a7471ab

drivers/usb/gadget/inode.c

+5 −0
Original line number Diff line number Diff line
@@ -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;

}