John Ogness 7375fc9f5f usb: wusbcore: remove excessive irqsave ...

wa_urb_dequeue() locks multiple spinlocks while disabling interrupts:

   spin_lock_irqsave(&lock1, flags);
   spin_lock_irqsave(&lock2, flags2);

Obviously there is no need for the second irqsave and "flags2" variable
since interrupts are disabled at that point. Remove the second irqsave:

   spin_lock_irqsave(&lock1, flags);
   spin_lock(&lock2);

and eliminate the flags2 variable.

Signed-off-by: John Ogness <john.ogness@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-06-28 19:36:06 +09:00

86 KiB

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