Hi Javier,
2015년 11월 26일 22:35에 Javier Martinez Canillas 이(가) 쓴 글:
> [adding Ajay Kumar who added the bridge support]
>
> Hello Inki,
>
> On 11/26/2015 09:47 AM, Inki Dae wrote:
>> This patch fixes wrong return type when dt binding of bridge device
>> failed.
>>
>> If a board has a bridge device then of_graph_get_remote_port_parent
>> function shouldn't be NULL. So this patch will return a proper error
>> type so that the deferred probe isn't triggered.
>>
>> Signed-off-by: Inki Dae <inki.dae@xxxxxxxxxxx>
>> ---
>> drivers/gpu/drm/exynos/exynos_dp_core.c | 6 ++++--
>> 1 file changed, 4 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c
>> index 0b53045..c77fb83 100644
>> --- a/drivers/gpu/drm/exynos/exynos_dp_core.c
>> +++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
>> @@ -1436,8 +1436,10 @@ static int exynos_dp_probe(struct platform_device *pdev)
>> of_node_put(bridge_node);
>> if (!dp->ptn_bridge)
>> return -EPROBE_DEFER;
>> - } else
>> - return -EPROBE_DEFER;
>> + } else {
>> + DRM_ERROR("no port node for bridge device.\n");
>> + return -ENXIO;
>> + }
>> }
>>
>
> As I mentioned in the other thread, I wonder if -ENXIO is the best errno
> code in this case. Shouldn't -EINVAL be more appropriate since is about
> an invalid DTB?
Seems better to use -EINVAL.
Thanks,
Inki Dae
>
>> pm_runtime_enable(dev);
>>
>
> Best regards,
>
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