linux-kernel - [ 28/57] cw1200: Use a threaded oneshot irq handler for cw1200

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Date:	Wed,  2 Oct 2013 21:08:54 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Solomon Peachy <pizza@...ftnet.org>,
	"John W. Linville" <linville@...driver.com>
Subject: [ 28/57] cw1200: Use a threaded oneshot irq handler for cw1200_spi

3.11-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Solomon Peachy <pizza@...ftnet.org>

commit 87421cb6010a2f6494938fbe0a95e1b096b3b7af upstream.

This supercedes the older patch ("cw1200: Don't perform SPI transfers in
interrupt context") that badly attempted to fix this problem.

This is a far simpler solution, which has the added benefit of
actually working.

Signed-off-by: Solomon Peachy <pizza@...ftnet.org>
Signed-off-by: John W. Linville <linville@...driver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/net/wireless/cw1200/cw1200_spi.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

--- a/drivers/net/wireless/cw1200/cw1200_spi.c
+++ b/drivers/net/wireless/cw1200/cw1200_spi.c
@@ -250,9 +250,10 @@ static int cw1200_spi_irq_subscribe(stru
 
 	pr_debug("SW IRQ subscribe\n");
 
-	ret = request_any_context_irq(self->func->irq, cw1200_spi_irq_handler,
-				      IRQF_TRIGGER_HIGH,
-				      "cw1200_wlan_irq", self);
+	ret = request_threaded_irq(self->func->irq, NULL,
+				   cw1200_spi_irq_handler,
+				   IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
+				   "cw1200_wlan_irq", self);
 	if (WARN_ON(ret < 0))
 		goto exit;
 


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