[RFT PATCH] mmc: pwrseq_simple: Fix incorrect handling of GPIO bitmap

Linus Walleij linus.walleij at linaro.org
Mon Oct 15 07:27:10 PDT 2018


On Fri, Oct 12, 2018 at 9:07 PM Janusz Krzysztofik <jmkrzyszt at gmail.com> wrote:

> Commit b9762bebc633 ("gpiolib: Pass bitmaps, not integer arrays, to
> get/set array") changed the way GPIO values are passed to
> gpiod_get/set_array_value() and friends.  The new code introduced into
> mmc_pwrseq_simple_set_gpios_value() incorrectly interpretes the 'value'
> argument as a bitmap of GPIO values and assigns it directly to the
> 'values' bitmap variable passed to gpiod_set_array_value_cansleep()
> instead of filling that bitmap with bits equal to the 'value' argument.
> As a result, only member 0 of the array is handled correctly.
>
> Moreover, wrong assumption is taken about the 'values' bitmap size not
> exceding the number of bits of the 'value' argument type.
>
> Fix it.
>
> Signed-off-by: Janusz Krzysztofik <jmkrzyszt at gmail.com>

Patch applied with Ulf's and Marek's tags!

Yours,
Linus Walleij



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