linux-kernel - Re: [RESEND PATCH 3/4] gpio: xilinx: Modify bitmap_set

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Message-ID: <CAMpxmJVNPWCUFnBXzDW3uJ_1Sv4rQ=M0WbKmoW4juYLUQP-ABA@mail.gmail.com>
Date:   Tue, 1 Dec 2020 16:33:28 +0100
From:   Bartosz Golaszewski <bgolaszewski@...libre.com>
To:     Syed Nayyar Waris <syednwaris@...il.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        William Breathitt Gray <vilhelm.gray@...il.com>,
        Michal Simek <michal.simek@...inx.com>,
        Arnd Bergmann <arnd@...db.de>, rrichter@...vell.com,
        Linus Walleij <linus.walleij@...aro.org>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Zhang Rui <rui.zhang@...el.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Amit Kucheria <amit.kucheria@...durent.com>,
        linux-arch@...r.kernel.org,
        linux-gpio <linux-gpio@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        arm-soc <linux-arm-kernel@...ts.infradead.org>,
        linux-pm <linux-pm@...r.kernel.org>
Subject: Re: [RESEND PATCH 3/4] gpio: xilinx: Modify bitmap_set_value() calls

On Fri, Nov 20, 2020 at 7:46 PM Syed Nayyar Waris <syednwaris@...il.com> wrote:
>
> Modify the bitmap_set_value() calls. bitmap_set_value()
> now takes an extra bitmap width as second argument and the width of
> value is now present as the fourth argument.
>
> Cc: Michal Simek <michal.simek@...inx.com>
> Signed-off-by: Syed Nayyar Waris <syednwaris@...il.com>
> ---
>  drivers/gpio/gpio-xilinx.c | 12 ++++++------
>  1 file changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpio/gpio-xilinx.c b/drivers/gpio/gpio-xilinx.c
> index ad4ee4145db4..05dae086c4d0 100644
> --- a/drivers/gpio/gpio-xilinx.c
> +++ b/drivers/gpio/gpio-xilinx.c
> @@ -151,16 +151,16 @@ static void xgpio_set_multiple(struct gpio_chip *gc, unsigned long *mask,
>         spin_lock_irqsave(&chip->gpio_lock[0], flags);
>         spin_lock(&chip->gpio_lock[1]);
>
> -       bitmap_set_value(old, state[0], 0, width[0]);
> -       bitmap_set_value(old, state[1], width[0], width[1]);
> +       bitmap_set_value(old, 64, state[0], width[0], 0);
> +       bitmap_set_value(old, 64, state[1], width[1], width[0]);
>         bitmap_replace(new, old, bits, mask, gc->ngpio);
>
> -       bitmap_set_value(old, state[0], 0, 32);
> -       bitmap_set_value(old, state[1], 32, 32);
> +       bitmap_set_value(old, 64, state[0], 32, 0);
> +       bitmap_set_value(old, 64, state[1], 32, 32);
>         state[0] = bitmap_get_value(new, 0, width[0]);
>         state[1] = bitmap_get_value(new, width[0], width[1]);
> -       bitmap_set_value(new, state[0], 0, 32);
> -       bitmap_set_value(new, state[1], 32, 32);
> +       bitmap_set_value(new, 64, state[0], 32, 0);
> +       bitmap_set_value(new, 64, state[1], 32, 32);
>         bitmap_xor(changed, old, new, 64);
>
>         if (((u32 *)changed)[0])
> --
> 2.29.0
>

This series is not bisectable because you modify the interface -
breaking existing users - and you only fix them later. Please squash
those changes into a single commit.

Bartosz