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Re: [PATCH -next] gpio: xilinx: Do not use gpiochip_get_data() in xgpio_save_regs()

From Guenter Roeck <linux@roeck-us.net>
Newsgroups linux.kernel
Subject Re: [PATCH -next] gpio: xilinx: Do not use gpiochip_get_data() in xgpio_save_regs()
Date 2016-01-07 16:00 +0100
Message-ID <qOkcG-137-5@gated-at.bofh.it> (permalink)
References <qO6CJ-al-11@gated-at.bofh.it> <qOeJX-61z-7@gated-at.bofh.it>
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On 01/07/2016 01:07 AM, Linus Walleij wrote:
> On Thu, Jan 7, 2016 at 1:20 AM, Guenter Roeck <linux@roeck-us.net> wrote:
>
>> Commit 097d88e94c44 ("gpio: xilinx: use gpiochip data pointer") replaces
>> the use of container_of() with gpiochip_get_data(). Unfortunately, the
>> data pointer is not yet set by the time xgpio_save_regs() is called,
>> causing a system hang.
>>
>> Fixes: 097d88e94c44 ("gpio: xilinx: use gpiochip data pointer")
>> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
>> ---
>> It might make sense to merge this patch with the patch introducing the problem.
>
> Patch applied, thanks for finding and fixing this so quick!
>
Code inspection shows that there are two more - I'll send patches today.

Guenter

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[PATCH -next] gpio: xilinx: Do not use gpiochip_get_data() in xgpio_save_regs() Guenter Roeck <linux@roeck-us.net> - 2016-01-07 01:30 +0100
  Re: [PATCH -next] gpio: xilinx: Do not use gpiochip_get_data() in xgpio_save_regs() Linus Walleij <linus.walleij@linaro.org> - 2016-01-07 10:10 +0100
    Re: [PATCH -next] gpio: xilinx: Do not use gpiochip_get_data() in  xgpio_save_regs() Guenter Roeck <linux@roeck-us.net> - 2016-01-07 16:00 +0100

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