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authorAndrzej Hajda <a.hajda@samsung.com>2015-09-21 15:33:44 +0200
committerSebastian Reichel <sre@kernel.org>2016-01-07 16:07:54 +0100
commit525e1abc6b5a7d8bd9006de1da6e99722305ea2b (patch)
tree79703a6b4d2c5247544f2be9ed56475f58be4bac
parent6bf6ded3008a407ccab5ad72eb59ab71b97cc290 (diff)
HSI: omap_ssi_port: fix handling of_get_named_gpio result
The function can return negative value. The problem has been detected using proposed semantic patch scripts/coccinelle/tests/unsigned_lesser_than_zero.cocci [1]. [1]: http://permalink.gmane.org/gmane.linux.kernel/2038576 Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Sebastian Reichel <sre@kernel.org>
-rw-r--r--drivers/hsi/controllers/omap_ssi_port.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/hsi/controllers/omap_ssi_port.c b/drivers/hsi/controllers/omap_ssi_port.c
index 02e66032ae73..e80a66e20998 100644
--- a/drivers/hsi/controllers/omap_ssi_port.c
+++ b/drivers/hsi/controllers/omap_ssi_port.c
@@ -1147,13 +1147,13 @@ static int __init ssi_port_probe(struct platform_device *pd)
goto error;
}
- cawake_gpio = of_get_named_gpio(np, "ti,ssi-cawake-gpio", 0);
- if (cawake_gpio < 0) {
+ err = of_get_named_gpio(np, "ti,ssi-cawake-gpio", 0);
+ if (err < 0) {
dev_err(&pd->dev, "DT data is missing cawake gpio (err=%d)\n",
- cawake_gpio);
- err = -ENODEV;
+ err);
goto error;
}
+ cawake_gpio = err;
err = devm_gpio_request_one(&port->device, cawake_gpio, GPIOF_DIR_IN,
"cawake");