Hi Thierry, Hi Dave,

On 2018-09-07 01:31, Stefan Agner wrote:
> On 26.07.2018 06:36, Stefan Agner wrote:
>> If the GPIO subsystem is not ready make sure to return -EPROBE_DEFER
>> instead of silently continuing without HPD.
>>
>> Reported-by: Marcel Ziswiler <marcel.ziswi...@toradex.com>
>> Signed-off-by: Stefan Agner <ste...@agner.ch>
> 
> I think this did not get merged yet, any chance to get it in?

Any chance to get this in in the next merge window?

--
Stefan

> 
> --
> Stefan
> 
>> ---
>>  drivers/gpu/drm/tegra/output.c | 4 +++-
>>  1 file changed, 3 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/gpu/drm/tegra/output.c b/drivers/gpu/drm/tegra/output.c
>> index ffe34bd0bb9d..4bcefe455afd 100644
>> --- a/drivers/gpu/drm/tegra/output.c
>> +++ b/drivers/gpu/drm/tegra/output.c
>> @@ -133,7 +133,9 @@ int tegra_output_probe(struct tegra_output *output)
>>      output->hpd_gpio = of_get_named_gpio_flags(output->of_node,
>>                                                 "nvidia,hpd-gpio", 0,
>>                                                 &output->hpd_gpio_flags);
>> -    if (gpio_is_valid(output->hpd_gpio)) {
>> +    if (output->hpd_gpio == -EPROBE_DEFER) {
>> +            return -EPROBE_DEFER;
>> +    } else if (gpio_is_valid(output->hpd_gpio)) {
>>              unsigned long flags;
>>
>>              err = gpio_request_one(output->hpd_gpio, GPIOF_DIR_IN,
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