diff options
| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2015-07-30 12:32:23 +0300 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2015-09-09 22:35:14 +0300 |
| commit | 0a0a542f6bbb2ebe956f0117c842302442ef52da (patch) | |
| tree | fcce706c2c692ae597097ea3d56cf13c6a48122c /drivers/watchdog/gpio_wdt.c | |
| parent | ab54d7f017772e89964d4040937a83cd4468562a (diff) | |
| download | linux-0a0a542f6bbb2ebe956f0117c842302442ef52da.tar.xz | |
watchdog: gpio-wdt: be more strict about hw_algo matching
strncmp(algo, "toggle", 6) doesn't compare the trailing '\0' byte, so
using
hw_algo = "toggleboggle"
is recognized the same way as
hw_algo = "toggle"
. While this doesn't introduce any problems for a device tree that
sticks to the documented settings it's still ugly.
Fix this by using strcmp to only match on "toggle" and "level".
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/watchdog/gpio_wdt.c')
| -rw-r--r-- | drivers/watchdog/gpio_wdt.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/watchdog/gpio_wdt.c b/drivers/watchdog/gpio_wdt.c index 1687cc2d7122..57d30f1f55ab 100644 --- a/drivers/watchdog/gpio_wdt.c +++ b/drivers/watchdog/gpio_wdt.c @@ -182,10 +182,10 @@ static int gpio_wdt_probe(struct platform_device *pdev) ret = of_property_read_string(pdev->dev.of_node, "hw_algo", &algo); if (ret) return ret; - if (!strncmp(algo, "toggle", 6)) { + if (!strcmp(algo, "toggle")) { priv->hw_algo = HW_ALGO_TOGGLE; f = GPIOF_IN; - } else if (!strncmp(algo, "level", 5)) { + } else if (!strcmp(algo, "level")) { priv->hw_algo = HW_ALGO_LEVEL; f = priv->active_low ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW; } else { |