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samples: button: stop the app if device binding fails

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Stop the app from running if device binding fails. Otherwise,
dereferencing NULL pointer will happen. This was caught by
Coverity.

Coverity-CID: 151988

Change-Id: I8245d938498a51123249fbd069935900ad660314
Signed-off-by: Baohong Liu <baohong.liu@intel.com>
This commit is contained in:
Baohong Liu 2016-11-17 16:47:57 -08:00 committed by Anas Nashif
parent 8d2a511557
commit 2ca689da91
1 changed files with 1 additions and 0 deletions
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samples/basic/button/src/main.c
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@ -62,6 +62,7 @@ void main(void)
gpiob = device_get_binding(PORT);
if (!gpiob) {
printk("error\n");
return;
}
gpio_pin_configure(gpiob, PIN,