@@ -348,32 +348,33 @@ static const struct drm_panel_funcs st7789v_drm_funcs = {
static int st7789v_probe(struct spi_device *spi)
{
+ struct device *dev = &spi->dev;
struct st7789v *ctx;
int ret;
- ctx = devm_kzalloc(&spi->dev, sizeof(*ctx), GFP_KERNEL);
+ ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
if (!ctx)
return -ENOMEM;
spi_set_drvdata(spi, ctx);
ctx->spi = spi;
- drm_panel_init(&ctx->panel, &spi->dev, &st7789v_drm_funcs,
+ drm_panel_init(&ctx->panel, dev, &st7789v_drm_funcs,
DRM_MODE_CONNECTOR_DPI);
- ctx->power = devm_regulator_get(&spi->dev, "power");
- if (IS_ERR(ctx->power))
- return PTR_ERR(ctx->power);
+ ctx->power = devm_regulator_get(dev, "power");
+ ret = PTR_ERR_OR_ZERO(ctx->power);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to get regulator\n");
- ctx->reset = devm_gpiod_get_optional(&spi->dev, "reset", GPIOD_OUT_LOW);
- if (IS_ERR(ctx->reset)) {
- dev_err(&spi->dev, "Couldn't get our reset line\n");
- return PTR_ERR(ctx->reset);
- }
+ ctx->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
+ ret = PTR_ERR_OR_ZERO(ctx->reset);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to get reset line\n");
ret = drm_panel_of_backlight(&ctx->panel);
if (ret)
- return ret;
+ return dev_err_probe(dev, ret, "Failed to get backlight\n");
drm_panel_add(&ctx->panel);
Improve error handling in the probe routine, so that probe defer errors are captured in /sys/kernel/debug/devices_deferred Signed-off-by: Sebastian Reichel <sre@kernel.org> --- .../gpu/drm/panel/panel-sitronix-st7789v.c | 23 ++++++++++--------- 1 file changed, 12 insertions(+), 11 deletions(-)