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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>
This commit is contained in:
Andrzej Hajda 2015-09-21 15:33:44 +02:00 committed by Sebastian Reichel
parent 6bf6ded300
commit 525e1abc6b
1 changed files with 4 additions and 4 deletions
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8
drivers/hsi/controllers/omap_ssi_port.c
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@ -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");