From 4978705d26149a629b9f50ff221caed6f1ae3048 Mon Sep 17 00:00:00 2001 From: Solomon Peachy Date: Wed, 9 Oct 2013 12:15:11 -0400 Subject: [PATCH] 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 Signed-off-by: Solomon Peachy Signed-off-by: John W. Linville --- drivers/net/wireless/cw1200/cw1200_spi.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/wireless/cw1200/cw1200_spi.c b/drivers/net/wireless/cw1200/cw1200_spi.c index 899cad34ccd3..755a0c8edfe1 100644 --- a/drivers/net/wireless/cw1200/cw1200_spi.c +++ b/drivers/net/wireless/cw1200/cw1200_spi.c @@ -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;