Commit 4978705d authored Oct 09, 2013 by Solomon Peachy Committed by John W. Linville Oct 10, 2013

wireless: cw1200: acquire hwbus lock around cw1200_irq_handler() call.



This fixes "lost interrupt" problems that occurred on SPI-based systems.
cw1200_irq_handler() expects the hwbus to be locked, but on the
SPI-path, that lock wasn't taken (unlike in the SDIO-path, where the
generic SDIO-code takes care of acquiring the lock).

Cc: stable@vger.kernel.org
Signed-off-by: David Mosberger <davidm@egauge.net>
Signed-off-by: Solomon Peachy <pizza@shaftnet.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

parent 9473ca6e

drivers/net/wireless/cw1200/cw1200_spi.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -237,7 +237,9 @@ static irqreturn_t cw1200_spi_irq_handler(int irq, void *dev_id)
		struct hwbus_priv *self = dev_id;

		if (self->core) {
		cw1200_spi_lock(self);
		cw1200_irq_handler(self->core);
		cw1200_spi_unlock(self);
		return IRQ_HANDLED;
		} else {
		return IRQ_NONE;