Re: [PATCH v3] mfd: arizona: Correct handling of device tree gpiodefaults
From: Lee Jones
Date: Thu Oct 03 2013 - 11:49:27 EST
On Thu, 03 Oct 2013, Charles Keepax wrote:
> When setting GPIO defaults we are required to make a distinction
> between writing 0x0000 to the registers and leaving them untouched.
>
> When we receive between 0x0000 and 0xFFFF (inclusive) from either
> Platform Data or Device Tree, we should write the provided
> configuration to the device. Conversely, when we receive >0xFFFF we
> should leave the device configuration at its default setting.
>
> This patch fixes a bug and ensures that configuration 0x0000 isn't
> mistakenly written when the intention was to keep the default one.
>
> Reported-by: Heather Lomond <heather.lomond@xxxxxxxxxxxxxxxx>
> Signed-off-by: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
> ---
>
> Hi,
>
> Sorry, your explanation is certainly fine with me.
>
> Thanks,
> Charles
>
> drivers/mfd/arizona-core.c | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
Applied, thanks Charles.
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org â Open source software for ARM SoCs
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