linux-kernel - Re: [PATCH] drm/bridge: tc358764: Fix build error

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Date:   Tue, 30 Jul 2019 14:47:21 +0200
From:   Neil Armstrong <narmstrong@...libre.com>
To:     YueHaibing <yuehaibing@...wei.com>, a.hajda@...sung.com,
        Laurent.pinchart@...asonboard.com, jonas@...boo.se,
        jernej.skrabec@...l.net, airlied@...ux.ie, daniel@...ll.ch
Cc:     linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH] drm/bridge: tc358764: Fix build error

On 30/07/2019 14:32, Neil Armstrong wrote:
> On 29/07/2019 11:05, YueHaibing wrote:
>> If CONFIG_DRM_TOSHIBA_TC358764=y but CONFIG_DRM_KMS_HELPER=m,
>> building fails:
>>
>> drivers/gpu/drm/bridge/tc358764.o:(.rodata+0x228): undefined reference to `drm_atomic_helper_connector_reset'
>> drivers/gpu/drm/bridge/tc358764.o:(.rodata+0x240): undefined reference to `drm_helper_probe_single_connector_modes'
>> drivers/gpu/drm/bridge/tc358764.o:(.rodata+0x268): undefined reference to `drm_atomic_helper_connector_duplicate_state'
>> drivers/gpu/drm/bridge/tc358764.o:(.rodata+0x270): undefined reference to `drm_atomic_helper_connector_destroy_state'
>>
>> Like TC358767, select DRM_KMS_HELPER to fix this, and
>> change to select DRM_PANEL to avoid recursive dependency.
>>
>> Reported-by: Hulk Robot <hulkci@...wei.com>
>> Fixes: f38b7cca6d0e ("drm/bridge: tc358764: Add DSI to LVDS bridge driver")
>> Signed-off-by: YueHaibing <yuehaibing@...wei.com>
>> ---
>>  drivers/gpu/drm/bridge/Kconfig | 3 ++-
>>  1 file changed, 2 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
>> index a6eec90..323f72d 100644
>> --- a/drivers/gpu/drm/bridge/Kconfig
>> +++ b/drivers/gpu/drm/bridge/Kconfig
>> @@ -116,9 +116,10 @@ config DRM_THINE_THC63LVD1024
>>  
>>  config DRM_TOSHIBA_TC358764
>>  	tristate "TC358764 DSI/LVDS bridge"
>> -	depends on DRM && DRM_PANEL
>>  	depends on OF
>>  	select DRM_MIPI_DSI
>> +	select DRM_KMS_HELPER
>> +	select DRM_PANEL
>>  	help
>>  	  Toshiba TC358764 DSI/LVDS bridge driver.
>>  
>>
> 
> Reviewed-by: Neil Armstrong <narmstrong@...libre.com>
> 

Applying to drm-misc-fixes

Thanks,
Neil