[PATCH V2 2/3] pwm: imx27: Use dev_err_probe() to simplify error handling

From: Anson Huang
Date: Tue Aug 11 2020 - 02:29:35 EST


dev_err_probe() can reduce code size, uniform error handling and record the
defer probe reason etc., use it to simplify the code.

Signed-off-by: Anson Huang <Anson.Huang@xxxxxxx>
---
changes since V1:
- remove redundant return value print.
---
drivers/pwm/pwm-imx27.c | 25 ++++++-------------------
1 file changed, 6 insertions(+), 19 deletions(-)

diff --git a/drivers/pwm/pwm-imx27.c b/drivers/pwm/pwm-imx27.c
index c50d453..ceaed03 100644
--- a/drivers/pwm/pwm-imx27.c
+++ b/drivers/pwm/pwm-imx27.c
@@ -315,27 +315,14 @@ static int pwm_imx27_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, imx);

imx->clk_ipg = devm_clk_get(&pdev->dev, "ipg");
- if (IS_ERR(imx->clk_ipg)) {
- int ret = PTR_ERR(imx->clk_ipg);
-
- if (ret != -EPROBE_DEFER)
- dev_err(&pdev->dev,
- "getting ipg clock failed with %d\n",
- ret);
- return ret;
- }
+ if (IS_ERR(imx->clk_ipg))
+ return dev_err_probe(&pdev->dev, PTR_ERR(imx->clk_ipg),
+ "getting ipg clock failed\n");

imx->clk_per = devm_clk_get(&pdev->dev, "per");
- if (IS_ERR(imx->clk_per)) {
- int ret = PTR_ERR(imx->clk_per);
-
- if (ret != -EPROBE_DEFER)
- dev_err(&pdev->dev,
- "failed to get peripheral clock: %d\n",
- ret);
-
- return ret;
- }
+ if (IS_ERR(imx->clk_per))
+ return dev_err_probe(&pdev->dev, PTR_ERR(imx->clk_per),
+ "failed to get peripheral clock\n");

imx->chip.ops = &pwm_imx27_ops;
imx->chip.dev = &pdev->dev;
--
2.7.4