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usb: cdc-wdm: Fix deadlock between write and resume 

The new runtime PM scheme allows resume() to have no locks.
This fixes the deadlock.

Signed-off-by: Oliver Neukum <neukum@b1-systems.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
hifive-unleashed-5.1
Oliver Neukum 2010-02-27 20:57:12 +01:00 committed by Greg Kroah-Hartman
parent d93d16e9aa
commit 338124c1f1
1 changed files with 2 additions and 2 deletions
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4
drivers/usb/class/cdc-wdm.c
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@ -839,10 +839,10 @@ static int wdm_resume(struct usb_interface *intf)
int rv;
dev_dbg(&desc->intf->dev, "wdm%d_resume\n", intf->minor);
mutex_lock(&desc->lock);
clear_bit(WDM_SUSPENDING, &desc->flags);
rv = recover_from_urb_loss(desc);
mutex_unlock(&desc->lock);
return rv;
}
#endif