diff mbox series

[v2,1/6] drm/panel: st7703: Use dev_err_probe

Message ID 36405038d93eb148f3e8ed8e5ea70de8e87afd78.1605688147.git.agx@sigxcpu.org
State Accepted
Commit dfb64090892ff377e714aa695d028e5de5d57091
Headers show
Series drm/panel: mantix and st7703 fixes and additions | expand

Commit Message

Guido Günther Nov. 18, 2020, 8:29 a.m. UTC 
Less code and easier probe deferral debugging.

Signed-off-by: Guido Günther <agx@sigxcpu.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
---
 drivers/gpu/drm/panel/panel-sitronix-st7703.c | 24 +++++++------------
 1 file changed, 8 insertions(+), 16 deletions(-)

Comments

Sam Ravnborg Nov. 23, 2020, 9:49 p.m. UTC | #1 
On Wed, Nov 18, 2020 at 09:29:48AM +0100, Guido Günther wrote:
> Less code and easier probe deferral debugging.
> 
> Signed-off-by: Guido Günther <agx@sigxcpu.org>
> Reviewed-by: Linus Walleij <linus.walleij@linaro.org>

Nice.

I hope someone comes around and update all panel drivers to use
dev_err_probe. It is simpler and better than the current code.
And it will fix a lot of drivers that are noisy during deferral.

	Sam
diff mbox series

Patch

diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7703.c b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
index b30510b1696a..a2c303e5732c 100644
--- a/drivers/gpu/drm/panel/panel-sitronix-st7703.c
+++ b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
@@ -530,10 +530,8 @@  static int st7703_probe(struct mipi_dsi_device *dsi)
 		return -ENOMEM;
 
 	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
-	if (IS_ERR(ctx->reset_gpio)) {
-		dev_err(dev, "cannot get reset gpio\n");
-		return PTR_ERR(ctx->reset_gpio);
-	}
+	if (IS_ERR(ctx->reset_gpio))
+		return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio), "Failed to get reset gpio\n");
 
 	mipi_dsi_set_drvdata(dsi, ctx);
 
@@ -545,19 +543,13 @@  static int st7703_probe(struct mipi_dsi_device *dsi)
 	dsi->lanes = ctx->desc->lanes;
 
 	ctx->vcc = devm_regulator_get(dev, "vcc");
-	if (IS_ERR(ctx->vcc)) {
-		ret = PTR_ERR(ctx->vcc);
-		if (ret != -EPROBE_DEFER)
-			dev_err(dev, "Failed to request vcc regulator: %d\n", ret);
-		return ret;
-	}
+	if (IS_ERR(ctx->vcc))
+		return dev_err_probe(dev, PTR_ERR(ctx->vcc), "Failed to request vcc regulator\n");
+
 	ctx->iovcc = devm_regulator_get(dev, "iovcc");
-	if (IS_ERR(ctx->iovcc)) {
-		ret = PTR_ERR(ctx->iovcc);
-		if (ret != -EPROBE_DEFER)
-			dev_err(dev, "Failed to request iovcc regulator: %d\n", ret);
-		return ret;
-	}
+	if (IS_ERR(ctx->iovcc))
+		return dev_err_probe(dev, PTR_ERR(ctx->iovcc),
+				     "Failed to request iovcc regulator\n");
 
 	drm_panel_init(&ctx->panel, dev, &st7703_drm_funcs,
 		       DRM_MODE_CONNECTOR_DSI);