[PATCH v1] drm/tegra: Fix gpiod_get_from_of_node() regression

[Dmitry Osipenko]

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 at gmail.com>
---
 drivers/gpu/drm/tegra/output.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/tegra/output.c b/drivers/gpu/drm/tegra/output.c
index 274cb955e2e1..471d33809cd4 100644
--- 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)
+			output->hpd_gpio = NULL;
+		else
+			return PTR_ERR(output->hpd_gpio);
+	}
 
 	if (output->hpd_gpio) {
 		err = gpiod_to_irq(output->hpd_gpio);
-- 
2.22.0