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usb: gadget: inode.c: fix unbalanced spin_lock in ep0_write

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commit b7bd98b7db upstream.

Fix bad unlock balance: ep0_write enter with the locks locked from
inode.c:1769, hence it must exit with spinlock held to avoid double
unlock in dev_config.

Signed-off-by: David Eccher <d.eccher@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
David Eccher
2015-12-11 22:13:55 +01:00
committed by Greg Kroah-Hartman
parent c030c36a88
commit c2eb312f31
1 changed files with 1 additions and 2 deletions
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3
drivers/usb/gadget/legacy/inode.c
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@@ -1140,10 +1140,9 @@ ep0_write (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
dev->gadget->ep0, dev->req,
GFP_KERNEL);
}
spin_lock_irq(&dev->lock);
if (retval < 0) {
spin_lock_irq (&dev->lock);
clean_req (dev->gadget->ep0, dev->req);
spin_unlock_irq (&dev->lock);
} else
retval = len;