linux-kernel - Re: linux-next: build failure after merge of the amdgpu tree

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Date:   Mon, 7 Mar 2022 08:16:53 +0100
From:   Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
To:     Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     Alex Deucher <alexdeucher@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Maxime Ripard <maxime@...no.tech>,
        Noralf Trønnes <noralf@...nnes.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the amdgpu tree

Hello Stephen,

On Mon, Mar 07, 2022 at 11:13:42AM +1100, Stephen Rothwell wrote:
> After merging the amdgpu tree, today's linux-next build (x86_64
> allmodconfig) failed like this:
> 
> drivers/gpu/drm/tiny/panel-mipi-dbi.c:391:19: error: initialization of 'void (*)(struct spi_device *)' from incompatible pointer type 'int (*)(struct spi_device *)' [-Werror=incompatible-pointer-types]
>   391 |         .remove = panel_mipi_dbi_spi_remove,
>       |                   ^~~~~~~~~~~~~~~~~~~~~~~~~
> 
> Caused by commit
> 
>   0e65e2e6abb0 ("drm/tiny: Add MIPI DBI compatible SPI driver")
> 
> interacting with commit
> 
>   a0386bba7093 ("spi: make remove callback a void function")
> 
> from the spi trees.
> 
> I have applied the following merge fix.
> 
> From: Stephen Rothwell <sfr@...b.auug.org.au>
> Date: Mon, 7 Mar 2022 11:01:01 +1100
> Subject: [PATCH] fix up for "spi: make remove callback a void function"
> 
> Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
> ---
>  drivers/gpu/drm/tiny/panel-mipi-dbi.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/tiny/panel-mipi-dbi.c b/drivers/gpu/drm/tiny/panel-mipi-dbi.c
> index 7f8c6c51387f..c759ff9c2c87 100644
> --- a/drivers/gpu/drm/tiny/panel-mipi-dbi.c
> +++ b/drivers/gpu/drm/tiny/panel-mipi-dbi.c
> @@ -336,14 +336,12 @@ static int panel_mipi_dbi_spi_probe(struct spi_device *spi)
>  	return 0;
>  }
>  
> -static int panel_mipi_dbi_spi_remove(struct spi_device *spi)
> +static void panel_mipi_dbi_spi_remove(struct spi_device *spi)
>  {
>  	struct drm_device *drm = spi_get_drvdata(spi);
>  
>  	drm_dev_unplug(drm);
>  	drm_atomic_helper_shutdown(drm);
> -
> -	return 0;
>  }
>  
>  static void panel_mipi_dbi_spi_shutdown(struct spi_device *spi)

Looks right, thanks
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | https://www.pengutronix.de/ |

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