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* [PATCH] drm/sun4i: dsi: Make use of the helper function dev_err_probe()
@ 2021-09-16 10:56 Cai Huoqing
  2021-09-16 13:47 ` Maxime Ripard
  0 siblings, 1 reply; 2+ messages in thread
From: Cai Huoqing @ 2021-09-16 10:56 UTC (permalink / raw)
  To: caihuoqing
  Cc: Maxime Ripard, Chen-Yu Tsai, David Airlie, Daniel Vetter,
	Jernej Skrabec, dri-devel, linux-arm-kernel, linux-sunxi,
	linux-kernel

When possible use dev_err_probe help to properly deal with the
PROBE_DEFER error, the benefit is that DEFER issue will be logged
in the devices_deferred debugfs file.
And using dev_err_probe() can reduce code size, the error value
gets printed.

Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
---
 drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
index 4f5efcace68e..be60b16bcea9 100644
--- a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
+++ b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
@@ -1128,10 +1128,9 @@ static int sun6i_dsi_probe(struct platform_device *pdev)
 	}
 
 	dsi->regulator = devm_regulator_get(dev, "vcc-dsi");
-	if (IS_ERR(dsi->regulator)) {
-		dev_err(dev, "Couldn't get VCC-DSI supply\n");
-		return PTR_ERR(dsi->regulator);
-	}
+	if (IS_ERR(dsi->regulator))
+		return dev_err_probe(dev, PTR_ERR(dsi->regulator),
+				     "Couldn't get VCC-DSI supply\n");
 
 	dsi->reset = devm_reset_control_get_shared(dev, NULL);
 	if (IS_ERR(dsi->reset)) {
@@ -1146,10 +1145,9 @@ static int sun6i_dsi_probe(struct platform_device *pdev)
 	}
 
 	dsi->bus_clk = devm_clk_get(dev, bus_clk_name);
-	if (IS_ERR(dsi->bus_clk)) {
-		dev_err(dev, "Couldn't get the DSI bus clock\n");
-		return PTR_ERR(dsi->bus_clk);
-	}
+	if (IS_ERR(dsi->bus_clk))
+		return dev_err_probe(dev, PTR_ERR(dsi->bus_clk),
+				     "Couldn't get the DSI bus clock\n");
 
 	ret = regmap_mmio_attach_clk(dsi->regs, dsi->bus_clk);
 	if (ret)
-- 
2.25.1


^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: [PATCH] drm/sun4i: dsi: Make use of the helper function dev_err_probe()
  2021-09-16 10:56 [PATCH] drm/sun4i: dsi: Make use of the helper function dev_err_probe() Cai Huoqing
@ 2021-09-16 13:47 ` Maxime Ripard
  0 siblings, 0 replies; 2+ messages in thread
From: Maxime Ripard @ 2021-09-16 13:47 UTC (permalink / raw)
  To: Cai Huoqing
  Cc: Chen-Yu Tsai, David Airlie, Daniel Vetter, Jernej Skrabec,
	dri-devel, linux-arm-kernel, linux-sunxi, linux-kernel

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On Thu, Sep 16, 2021 at 06:56:24PM +0800, Cai Huoqing wrote:
> When possible use dev_err_probe help to properly deal with the
> PROBE_DEFER error, the benefit is that DEFER issue will be logged
> in the devices_deferred debugfs file.
> And using dev_err_probe() can reduce code size, the error value
> gets printed.
> 
> Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>

Applied, thanks
Maxime

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^ permalink raw reply	[flat|nested] 2+ messages in thread

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2021-09-16 10:56 [PATCH] drm/sun4i: dsi: Make use of the helper function dev_err_probe() Cai Huoqing
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