OMAPDSS: panel-dpi: enable-gpio

The enable gpio should be optional, but the driver returns an error if
it doesn't get the gpio.

So change the driver to accept -ENOENT error.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Tested-by: Joachim Eastwood <manabian@gmail.com>

1 files changed, 7 insertions, 3 deletions

diff --git a/drivers/video/fbdev/omap2/displays-new/panel-dpi.c b/drivers/video/fbdev/omap2/displays-new/panel-dpi.c
index dca6b10d1157..3636b61dc9b4 100644
--- a/drivers/video/fbdev/omap2/displays-new/panel-dpi.c
+++ b/drivers/video/fbdev/omap2/displays-new/panel-dpi.c
@@ -210,14 +210,18 @@ static int panel_dpi_probe_of(struct platform_device *pdev)
         struct gpio_desc *gpio;
 
         gpio = devm_gpiod_get(&pdev->dev, "enable");
+
         if (IS_ERR(gpio)) {
-                dev_err(&pdev->dev, "failed to parse enable gpio\n");
-                return PTR_ERR(gpio);
+                if (PTR_ERR(gpio) != -ENOENT)
+                        return PTR_ERR(gpio);
+                else
+                        gpio = NULL;
         } else {
                 gpiod_direction_output(gpio, 0);
-                ddata->enable_gpio = gpio;
         }
 
+        ddata->enable_gpio = gpio;
+
         ddata->backlight_gpio = -ENOENT;
 
         r = of_get_display_timing(node, "panel-timing", &timing);