linux-kernel - Re: [PATCH] usb: isp1301-omap: Add missing gpiod_add_lookup

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Date:   Thu, 1 Apr 2021 12:20:07 -0700
From:   Nick Desaulniers <ndesaulniers@...gle.com>
To:     Maciej Falkowski <maciej.falkowski9@...il.com>
Cc:     aaro.koskinen@....fi, tony@...mide.com,
        Russell King <linux@...linux.org.uk>,
        linux-omap@...r.kernel.org,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        clang-built-linux <clang-built-linux@...glegroups.com>
Subject: Re: [PATCH] usb: isp1301-omap: Add missing gpiod_add_lookup_table function

On Thu, Apr 1, 2021 at 9:21 AM Maciej Falkowski
<maciej.falkowski9@...il.com> wrote:
>
> The gpiod table was added without any usage making it unused
> as reported by Clang compilation from omap1_defconfig on linux-next:
>
> arch/arm/mach-omap1/board-h2.c:347:34: warning: unused variable 'isp1301_gpiod_table' [-Wunused-variable]
> static struct gpiod_lookup_table isp1301_gpiod_table = {
>                                  ^
> 1 warning generated.
>
> The patch adds the missing gpiod_add_lookup_table() function.
>
> Signed-off-by: Maciej Falkowski <maciej.falkowski9@...il.com>
> Fixes: f3ef38160e3d ("usb: isp1301-omap: Convert to use GPIO descriptors")
> Link: https://github.com/ClangBuiltLinux/linux/issues/1325

Looks consistent to me with other callers of gpiod_add_lookup_table
from .init_machine callbacks.

Reviewed-by: Nick Desaulniers <ndesaulniers@...gle.com>

> ---
>  arch/arm/mach-omap1/board-h2.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm/mach-omap1/board-h2.c b/arch/arm/mach-omap1/board-h2.c
> index c40cf5ef8607..977b0b744c22 100644
> --- a/arch/arm/mach-omap1/board-h2.c
> +++ b/arch/arm/mach-omap1/board-h2.c
> @@ -320,7 +320,7 @@ static int tps_setup(struct i2c_client *client, void *context)
>  {
>         if (!IS_BUILTIN(CONFIG_TPS65010))
>                 return -ENOSYS;
> -
> +
>         tps65010_config_vregs1(TPS_LDO2_ENABLE | TPS_VLDO2_3_0V |
>                                 TPS_LDO1_ENABLE | TPS_VLDO1_3_0V);
>
> @@ -394,6 +394,8 @@ static void __init h2_init(void)
>         BUG_ON(gpio_request(H2_NAND_RB_GPIO_PIN, "NAND ready") < 0);
>         gpio_direction_input(H2_NAND_RB_GPIO_PIN);
>
> +       gpiod_add_lookup_table(&isp1301_gpiod_table);
> +
>         omap_cfg_reg(L3_1610_FLASH_CS2B_OE);
>         omap_cfg_reg(M8_1610_FLASH_CS2B_WE);
>
> --

-- 
Thanks,
~Nick Desaulniers