On Mon, 13 Apr 2020, Alex Deucher <alexdeucher@xxxxxxxxx> wrote:
> On Mon, Apr 13, 2020 at 5:29 AM Tang Bin <tangbin@xxxxxxxxxxxxxxxxxxxx> wrote:
>>
>> The struct drm_dp_desc contains struct drm_dp_dpcd_ident, and the struct
>> drm_dp_dpcd_ident contains the array, so zero-initialization requires a
>> more couple of braces. In the ARM compiler environment, the compile
>> warning pointing it out:
>> drivers/gpu/drm/drm_dp_mst_topology.c: In function 'drm_dp_mst_dsc_aux_for_port':
>> drivers/gpu/drm/drm_dp_mst_topology.c:5494:9: warning: missing braces around initializer [-Wmissing-braces]
>> struct drm_dp_desc desc = { 0 };
>>
>
> This seems to vary based on compilers. Maybe a memset would be better.
= {}; will do the trick.
BR,
Jani.
>
> Alex
>
>> Signed-off-by: Tang Bin <tangbin@xxxxxxxxxxxxxxxxxxxx>
>> Signed-off-by: Shengju Zhang <zhangshengju@xxxxxxxxxxxxxxxxxxxx>
>> ---
>> drivers/gpu/drm/drm_dp_mst_topology.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
>> index 70c4b7a..4d8d1fd 100644
>> --- a/drivers/gpu/drm/drm_dp_mst_topology.c
>> +++ b/drivers/gpu/drm/drm_dp_mst_topology.c
>> @@ -5494,7 +5494,7 @@ struct drm_dp_aux *drm_dp_mst_dsc_aux_for_port(struct drm_dp_mst_port *port)
>> {
>> struct drm_dp_mst_port *immediate_upstream_port;
>> struct drm_dp_mst_port *fec_port;
>> - struct drm_dp_desc desc = { 0 };
>> + struct drm_dp_desc desc = { { { 0 } } };
>> u8 endpoint_fec;
>> u8 endpoint_dsc;
>>
>> --
>> 2.7.4
>>
>>
>>
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--
Jani Nikula, Intel Open Source Graphics Center
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