linux-kernel - Re: [PATCH] fbdev/ps3fb: Build without kernel device

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Date:   Mon, 31 Jul 2023 21:35:20 +0200
From:   Sam Ravnborg <sam@...nborg.org>
To:     Thomas Zimmermann <tzimmermann@...e.de>
Cc:     deller@....de, mpe@...erman.id.au, npiggin@...il.com,
        christophe.leroy@...roup.eu, javierm@...hat.com,
        bagasdotme@...il.com, rd.dunlab@...il.com,
        regressions@...mhuis.info, sfr@...b.auug.org.au,
        linux-kernel@...r.kernel.org, linux-fbdev@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, regressions@...ts.linux.dev,
        linux-next@...r.kernel.org, Randy Dunlap <rdunlap@...radead.org>,
        dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH] fbdev/ps3fb: Build without kernel device

On Mon, Jul 31, 2023 at 07:55:00PM +0200, Thomas Zimmermann wrote:
> Use fb_info() to print status message at the end of the probe function,
> which avoids decoding the devices. fb_info() works with or without an
> fbdev kernel device. Fixes the following error:
> 
> ../drivers/video/fbdev/ps3fb.c: In function 'ps3fb_probe':
> ../drivers/video/fbdev/ps3fb.c:1172:40: error: 'struct fb_info' has no member named 'dev'
>  1172 |                  dev_driver_string(info->dev), dev_name(info->dev),
>       |                                        ^~
> ../include/linux/dev_printk.h:110:37: note: in definition of macro 'dev_printk_index_wrap'
>   110 |                 _p_func(dev, fmt, ##__VA_ARGS__);                       \
>       |                                     ^~~~~~~~~~~
> ../drivers/video/fbdev/ps3fb.c:1171:9: note: in expansion of macro 'dev_info'
>  1171 |         dev_info(info->device, "%s %s, using %u KiB of video memory\n",
>       |         ^~~~~~~~
> ../drivers/video/fbdev/ps3fb.c:1172:61: error: 'struct fb_info' has no member named 'dev'
>  1172 |                  dev_driver_string(info->dev), dev_name(info->dev),
>       |                                                             ^~
> ../include/linux/dev_printk.h:110:37: note: in definition of macro 'dev_printk_index_wrap'
>   110 |                 _p_func(dev, fmt, ##__VA_ARGS__);                       \
>       |                                     ^~~~~~~~~~~
> ../drivers/video/fbdev/ps3fb.c:1171:9: note: in expansion of macro 'dev_info'
>  1171 |         dev_info(info->device, "%s %s, using %u KiB of video memory\n",
>       |         ^~~~~~~~
> 
> Reported-by: Randy Dunlap <rdunlap@...radead.org>
> Closes: https://lore.kernel.org/lkml/ccc63065-2976-88ef-1211-731330bf2866@infradead.org/
> Signed-off-by: Thomas Zimmermann <tzimmermann@...e.de>
> Fixes: 701d2054fa31 ("fbdev: Make support for userspace interfaces configurable")
> Cc: Michael Ellerman <mpe@...erman.id.au>
> Cc: Sam Ravnborg <sam@...nborg.org>
> Cc: Helge Deller <deller@....de>
> Cc: Javier Martinez Canillas <javierm@...hat.com>
> Cc: Randy Dunlap <rdunlap@...radead.org>
> Cc: Bagas Sanjaya <bagasdotme@...il.com>
> Cc: Thorsten Leemhuis <regressions@...mhuis.info>
> Cc: dri-devel@...ts.freedesktop.org
> Cc: linux-fbdev@...r.kernel.org
> Cc: linuxppc-dev@...ts.ozlabs.org
Acked-by: Sam Ravnborg <sam@...nborg.org>
> ---
>  drivers/video/fbdev/ps3fb.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/video/fbdev/ps3fb.c b/drivers/video/fbdev/ps3fb.c
> index 5aedc30c5f7e..64d291d6b153 100644
> --- a/drivers/video/fbdev/ps3fb.c
> +++ b/drivers/video/fbdev/ps3fb.c
> @@ -1168,9 +1168,7 @@ static int ps3fb_probe(struct ps3_system_bus_device *dev)
>  
>  	ps3_system_bus_set_drvdata(dev, info);
>  
> -	dev_info(info->device, "%s %s, using %u KiB of video memory\n",
> -		 dev_driver_string(info->dev), dev_name(info->dev),
> -		 info->fix.smem_len >> 10);
> +	fb_info(info, "using %u KiB of video memory\n", info->fix.smem_len >> 10);
>  
>  	task = kthread_run(ps3fbd, info, DEVICE_NAME);
>  	if (IS_ERR(task)) {
> -- 
> 2.41.0