[PATCH] drm/sun4i: dw-hdmi: Make use of the helper function dev_err_probe()

[PATCH] drm/sun4i: dw-hdmi: Make use of the helper function dev_err_probe()

[Cai Huoqing]

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/sun8i_dw_hdmi.c | 21 +++++++++------------
 1 file changed, 9 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c b/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c
index f75fb157f2ff..21d473deb757 100644
--- a/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c
+++ b/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c
@@ -153,22 +153,19 @@ static int sun8i_dw_hdmi_bind(struct device *dev, struct device *master,
 		return -EPROBE_DEFER;
 
 	hdmi->rst_ctrl = devm_reset_control_get(dev, "ctrl");
-	if (IS_ERR(hdmi->rst_ctrl)) {
-		dev_err(dev, "Could not get ctrl reset control\n");
-		return PTR_ERR(hdmi->rst_ctrl);
-	}
+	if (IS_ERR(hdmi->rst_ctrl))
+		return dev_err_probe(dev, PTR_ERR(hdmi->rst_ctrl),
+				     "Could not get ctrl reset control\n");
 
 	hdmi->clk_tmds = devm_clk_get(dev, "tmds");
-	if (IS_ERR(hdmi->clk_tmds)) {
-		dev_err(dev, "Couldn't get the tmds clock\n");
-		return PTR_ERR(hdmi->clk_tmds);
-	}
+	if (IS_ERR(hdmi->clk_tmds))
+		return dev_err_probe(dev, PTR_ERR(hdmi->clk_tmds),
+				     "Couldn't get the tmds clock\n");
 
 	hdmi->regulator = devm_regulator_get(dev, "hvcc");
-	if (IS_ERR(hdmi->regulator)) {
-		dev_err(dev, "Couldn't get regulator\n");
-		return PTR_ERR(hdmi->regulator);
-	}
+	if (IS_ERR(hdmi->regulator))
+		return dev_err_probe(dev, PTR_ERR(hdmi->regulator),
+				     "Couldn't get regulator\n");
 
 	ret = sun8i_dw_hdmi_find_connector_pdev(dev, &connector_pdev);
 	if (!ret) {
-- 
2.25.1

Re: [PATCH] drm/sun4i: dw-hdmi: Make use of the helper function dev_err_probe()

[Maxime Ripard]

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On Thu, Sep 16, 2021 at 06:56:32PM +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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