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.ziswiler@xxxxxxxxxxx>
>> Signed-off-by: Stefan Agner <stefan@xxxxxxxx>
>
> 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,
