drm/tegra: Fix gpiod_get_from_of_node() regression

That function now returns ERR_PTR instead of NULL if "hpd-gpio" is not
present in device-tree. The offending patch missed to adapt the Tegra's
DRM driver for the API change.

Fixes: 025bf37725f1 ("gpio: Fix return value mismatch of function gpiod_get_from_of_node()")
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --git a/drivers/gpu/drm/tegra/output.c b/drivers/gpu/drm/tegra/output.c
index 274cb955e2e19f496ed0be39c0610fe98609d645..bdcaa4c7168cfac967290347808bf08642dbe576 100644 (file)
--- a/drivers/gpu/drm/tegra/output.c
+++ b/drivers/gpu/drm/tegra/output.c
@@ -126,8 +126,12 @@ int tegra_output_probe(struct tegra_output *output)
                                                       "nvidia,hpd-gpio", 0,
                                                       GPIOD_IN,
                                                       "HDMI hotplug detect");
-       if (IS_ERR(output->hpd_gpio))
-               return PTR_ERR(output->hpd_gpio);
+       if (IS_ERR(output->hpd_gpio)) {
+               if (PTR_ERR(output->hpd_gpio) != -ENOENT)
+                       return PTR_ERR(output->hpd_gpio);
+
+               output->hpd_gpio = NULL;
+       }
 
        if (output->hpd_gpio) {
                err = gpiod_to_irq(output->hpd_gpio);