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authorFlorian Fainelli <florian@openwrt.org>2011-06-15 19:15:23 +0200
committerWim Van Sebroeck <wim@iguana.be>2011-06-28 07:42:23 +0000
commit9b19d40aa3ebaf1078779da10555da2ab8512422 (patch)
tree558ee3022e5bafa997c88612f414baaa4e628be7 /drivers/watchdog/mtx-1_wdt.c
parent076bad7c4d2c51d9484f0ac60d68838139d2bf72 (diff)
watchdog: mtx1-wdt: request gpio before using it
Otherwise, the gpiolib autorequest feature will produce a WARN_ON(): WARNING: at drivers/gpio/gpiolib.c:101 0x8020ec6c() autorequest GPIO-215 [...] Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Cc: stable <stable@kernel.org>
Diffstat (limited to 'drivers/watchdog/mtx-1_wdt.c')
-rw-r--r--drivers/watchdog/mtx-1_wdt.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/watchdog/mtx-1_wdt.c b/drivers/watchdog/mtx-1_wdt.c
index 1479dc4d6129..aa011da1d5fb 100644
--- a/drivers/watchdog/mtx-1_wdt.c
+++ b/drivers/watchdog/mtx-1_wdt.c
@@ -214,6 +214,12 @@ static int __devinit mtx1_wdt_probe(struct platform_device *pdev)
int ret;
mtx1_wdt_device.gpio = pdev->resource[0].start;
+ ret = gpio_request_one(mtx1_wdt_device.gpio,
+ GPIOF_OUT_INIT_HIGH, "mtx1-wdt");
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to request gpio");
+ return ret;
+ }
spin_lock_init(&mtx1_wdt_device.lock);
init_completion(&mtx1_wdt_device.stop);
@@ -239,6 +245,8 @@ static int __devexit mtx1_wdt_remove(struct platform_device *pdev)
mtx1_wdt_device.queue = 0;
wait_for_completion(&mtx1_wdt_device.stop);
}
+
+ gpio_free(mtx1_wdt_device.gpio);
misc_deregister(&mtx1_wdt_misc);
return 0;
}