Bunch of machines are not booting in next again, GPIO regression?

[Josh Cartwright]

On Wed, Feb 17, 2016 at 11:27:55AM -0800, Tony Lindgren wrote:
> Hi Linus,
> 
> Looks like ff2b13592299 ("gpio: make the gpiochip a real device")
> broke booting on all omaps, and probably other machines too according
> to this:
> 
> https://kernelci.org/boot/all/job/next/kernel/next-20160217/
> 
> So far we've gone from 1 failed machine with next-20160216 to
> 18 failed machines with next-20160217.
> 
> The error I'm getting on omaps is below with debug_ll enable,
> any ideas?

Hey Tony-

Looks like the newly allocated gpio_device object isn't zeroed,
confusing dev_set_name.  Can you give this a try?

  Josh

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index d8511cd..59f0045 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -435,7 +435,7 @@ int gpiochip_add_data(struct gpio_chip *chip, void *data)
 	 * First: allocate and populate the internal stat container, and
 	 * set up the struct device.
 	 */
-	gdev = kmalloc(sizeof(*gdev), GFP_KERNEL);
+	gdev = kzalloc(sizeof(*gdev), GFP_KERNEL);
 	if (!gdev)
 		return -ENOMEM;
 	gdev->dev.bus = &gpio_bus_type;
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