linux-kernel - Re: [PATCH] drm/armada: fix debugfs link error

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Message-ID: <20190628124832.cedpoabfiqgjhtkq@shell.armlinux.org.uk>
Date:   Fri, 28 Jun 2019 13:48:32 +0100
From:   Russell King - ARM Linux admin <linux@...linux.org.uk>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>,
        Sam Ravnborg <sam@...nborg.org>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/armada: fix debugfs link error

On Fri, Jun 28, 2019 at 12:33:40PM +0200, Arnd Bergmann wrote:
> Debugfs can be disabled at compile time, causing a link error
> with the newly restructured code:
> 
> drivers/gpu/drm/armada/armada_crtc.o: In function `armada_drm_crtc_late_register':
> armada_crtc.c:(.text+0x974): undefined reference to `armada_drm_crtc_debugfs_init'
> 
> Make the code into the debugfs init function conditional.

Thanks Arnd, mind if I roll this into the original commit?

> Fixes: 05ec8bd524ba ("drm/armada: redo CRTC debugfs files")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
>  drivers/gpu/drm/armada/armada_crtc.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/armada/armada_crtc.c b/drivers/gpu/drm/armada/armada_crtc.c
> index e3a5964d8a65..03d3fd00fe00 100644
> --- a/drivers/gpu/drm/armada/armada_crtc.c
> +++ b/drivers/gpu/drm/armada/armada_crtc.c
> @@ -773,7 +773,9 @@ static void armada_drm_crtc_destroy(struct drm_crtc *crtc)
>  
>  static int armada_drm_crtc_late_register(struct drm_crtc *crtc)
>  {
> -	armada_drm_crtc_debugfs_init(drm_to_armada_crtc(crtc));
> +	if (IS_ENABLED(CONFIG_DEBUG_FS))
> +		armada_drm_crtc_debugfs_init(drm_to_armada_crtc(crtc));
> +
>  	return 0;
>  }
>  
> -- 
> 2.20.0
> 
> 

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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