[3.16.y-ckt stable] Patch "sata_fsl: fix error handling of irq_of_parse_and_map" has been added to staging queue

[Luis Henriques]

This is a note to let you know that I have just added a patch titled

    sata_fsl: fix error handling of irq_of_parse_and_map

to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.16.y-queue

This patch is scheduled to be released in version 3.16.7-ckt3.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.16.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

------

>From 4310a6606ddf2eda5f3cd6adfea332e4bb73c688 Mon Sep 17 00:00:00 2001
From: Dmitry Torokhov <dtor at chromium.org>
Date: Fri, 14 Nov 2014 13:39:05 -0800
Subject: sata_fsl: fix error handling of irq_of_parse_and_map

commit aad0b624129709c94c2e19e583b6053520353fa8 upstream.

irq_of_parse_and_map() returns 0 on error (the result is unsigned int),
so testing for negative result never works.

Signed-off-by: Dmitry Torokhov <dtor at chromium.org>
Signed-off-by: Tejun Heo <tj at kernel.org>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 drivers/ata/sata_fsl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/ata/sata_fsl.c b/drivers/ata/sata_fsl.c
index 616a6d2ac20c..db3c29d6a105 100644
--- a/drivers/ata/sata_fsl.c
+++ b/drivers/ata/sata_fsl.c
@@ -1489,7 +1489,7 @@ static int sata_fsl_probe(struct platform_device *ofdev)
 	host_priv->csr_base = csr_base;

 	irq = irq_of_parse_and_map(ofdev->dev.of_node, 0);
-	if (irq < 0) {
+	if (!irq) {
 		dev_err(&ofdev->dev, "invalid irq from platform\n");
 		goto error_exit_with_cleanup;
 	}