[PATCH 3.17 26/47] sata_fsl: fix error handling of irq_of_parse_and_map

Greg Kroah-Hartman
2014-12-14T20:25:11Z

From: Dmitry Torokhov <dtor@chromium.org>

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@chromium.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/ata/sata_fsl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/ata/sata_fsl.c
+++ b/drivers/ata/sata_fsl.c
@@ -1488,7 +1488,7 @@ static int sata_fsl_probe(struct platfor
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;
}