linux-kernel - Re: [PATCH] gpio: twl4030: fix regression for twl gpio outputs for led pins

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Date:	Fri, 13 Dec 2013 11:36:47 -0600
From:	Nishanth Menon <nm@...com>
To:	Tony Lindgren <tony@...mide.com>
CC:	Linus Walleij <linus.walleij@...aro.org>,
	Peter Ujfalusi <peter.ujfalusi@...com>,
	Roger Quadros <rogerq@...com>, <linux-gpio@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-omap@...r.kernel.org>
Subject: Re: [PATCH] gpio: twl4030: fix regression for twl gpio outputs for
 led pins

On 12/13/2013 11:28 AM, Tony Lindgren wrote:
> * Nishanth Menon <nm@...com> [131213 08:48]:
>> Commit 0b2aa8b (gpio: twl4030: Fix regression for twl gpio output)
>> introduces yet another regression by ignoring the fact that we use twl
>> gpio even for LED. For example, leda (offset 18) is used for USB port2
>> power on beagleboard-xm.
>>
>> The original logic was supposed to setup the TWL4030 GPIO direction
>> if the offset was < TWL4030_GPIO_MAX, and anything greater used
>> twl4030_led_set_value as part of twl_set to setup the LED pin. However,
>> with the commit mentioned above, LEDa pin request will result in fail
>> as the GPIO number for LEDa is equal to TWL4030_GPIO_MAX and USB fails
>> to function on beagleboard-xm. This is reported in the log as:
>> hsusb2_vbus: Failed to request enable GPIO510: -22
>>
>> To fix this, we should handle the fail case of
>> twl4030_set_gpio_direction independent of the offset < TWL4030_GPIO_MAX
>> check.
> 
> Heh again :) Linus has already queued a similar fix, see
> "[PATCH v2 1/1] gpio: twl4030: Fix regression for twl gpio LED output".
> 

Alrite, I admit it, I need a vacation ;).. Sigh..
http://marc.info/?l=linux-gpio&w=2&r=1&s=twl4030&q=t is not good
enough :(..


-- 
Regards,
Nishanth Menon
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