NFC: nfcmrvl_usb: use irqsave() in USB's complete callback
authorSebastian Andrzej Siewior <bigeasy@linutronix.de>
Wed, 20 Jun 2018 19:39:06 +0000 (21:39 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 28 Jun 2018 10:36:07 +0000 (19:36 +0900)
commit24b2068e26c6f24de05c81459553cbc6cf753708
treed78db98fa7c54ff9efd1d08240459571b2aa1dd0
parent2df6948428542c5a22fbf9c7c36c66ccc9363c7d
NFC: nfcmrvl_usb: use irqsave() in USB's complete callback

The USB completion callback does not disable interrupts while acquiring
the lock. We want to remove the local_irq_disable() invocation from
__usb_hcd_giveback_urb() and therefore it is required for the callback
handler to disable the interrupts while acquiring the lock.
The callback may be invoked either in IRQ or BH context depending on the
USB host controller.
Use the _irqsave() variant of the locking primitives.

Cc: Samuel Ortiz <sameo@linux.intel.com>
Cc: linux-wireless@vger.kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/nfc/nfcmrvl/usb.c