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Subject[12/35] watchdog: mtx1-wdt: request gpio before using it
2.6.33-longterm review patch.  If anyone has any objections, please let us know.

------------------
From: Florian Fainelli <florian@openwrt.org>

commit 9b19d40aa3ebaf1078779da10555da2ab8512422 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
drivers/watchdog/mtx-1_wdt.c | 8 ++++++++
1 file changed, 8 insertions(+)
--- a/drivers/watchdog/mtx-1_wdt.c
+++ b/drivers/watchdog/mtx-1_wdt.c
@@ -211,6 +211,12 @@ static int __devinit mtx1_wdt_probe(stru
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);
@@ -236,6 +242,8 @@ static int __devexit mtx1_wdt_remove(str
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;
}



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