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authorUwe Kleine-König <u.kleine-koenig@pengutronix.de>2023-09-29 19:19:16 +0300
committerThierry Reding <thierry.reding@gmail.com>2023-10-13 11:07:18 +0300
commitdfbf937916308641e925a23aa12dd7c38ceddd99 (patch)
tree96c00ffca65920b6fc7d268bc4ea158585dee0f3 /drivers/pwm/pwm-vt8500.c
parent21c0e1aaf7ef0ac3c67e4e1ab68c080adb2a186b (diff)
downloadlinux-dfbf937916308641e925a23aa12dd7c38ceddd99.tar.xz
pwm: vt8500: Simplify using devm functions
With devm_clk_get_prepared() the call to clk_unprepare() can be dropped from the error path and the remove callback. With devm_pwmchip_add() pwmchip_remove() can be dropped. Then the remove callback is empty and can go away, too. With vt8500_pwm_remove() the last user of platform_get_drvdata() is gone and so platform_set_drvdata() can be dropped, too. Also use dev_err_probe() for simplified (and improved) error reporting. Link: https://lore.kernel.org/r/20230929161918.2410424-10-u.kleine-koenig@pengutronix.de Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'drivers/pwm/pwm-vt8500.c')
-rw-r--r--drivers/pwm/pwm-vt8500.c42
1 files changed, 9 insertions, 33 deletions
diff --git a/drivers/pwm/pwm-vt8500.c b/drivers/pwm/pwm-vt8500.c
index a96c7f5d9099..5568d5312d3c 100644
--- a/drivers/pwm/pwm-vt8500.c
+++ b/drivers/pwm/pwm-vt8500.c
@@ -235,10 +235,8 @@ static int vt8500_pwm_probe(struct platform_device *pdev)
struct device_node *np = pdev->dev.of_node;
int ret;
- if (!np) {
- dev_err(&pdev->dev, "invalid devicetree node\n");
- return -EINVAL;
- }
+ if (!np)
+ return dev_err_probe(&pdev->dev, -EINVAL, "invalid devicetree node\n");
vt8500 = devm_kzalloc(&pdev->dev, sizeof(*vt8500), GFP_KERNEL);
if (vt8500 == NULL)
@@ -248,45 +246,23 @@ static int vt8500_pwm_probe(struct platform_device *pdev)
vt8500->chip.ops = &vt8500_pwm_ops;
vt8500->chip.npwm = VT8500_NR_PWMS;
- vt8500->clk = devm_clk_get(&pdev->dev, NULL);
- if (IS_ERR(vt8500->clk)) {
- dev_err(&pdev->dev, "clock source not specified\n");
- return PTR_ERR(vt8500->clk);
- }
+ vt8500->clk = devm_clk_get_prepared(&pdev->dev, NULL);
+ if (IS_ERR(vt8500->clk))
+ return dev_err_probe(&pdev->dev, PTR_ERR(vt8500->clk), "clock source not specified\n");
vt8500->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(vt8500->base))
return PTR_ERR(vt8500->base);
- ret = clk_prepare(vt8500->clk);
- if (ret < 0) {
- dev_err(&pdev->dev, "failed to prepare clock\n");
- return ret;
- }
-
- ret = pwmchip_add(&vt8500->chip);
- if (ret < 0) {
- dev_err(&pdev->dev, "failed to add PWM chip\n");
- clk_unprepare(vt8500->clk);
- return ret;
- }
-
- platform_set_drvdata(pdev, vt8500);
- return ret;
-}
-
-static void vt8500_pwm_remove(struct platform_device *pdev)
-{
- struct vt8500_chip *vt8500 = platform_get_drvdata(pdev);
-
- pwmchip_remove(&vt8500->chip);
+ ret = devm_pwmchip_add(&pdev->dev, &vt8500->chip);
+ if (ret < 0)
+ return dev_err_probe(&pdev->dev, ret, "failed to add PWM chip\n");
- clk_unprepare(vt8500->clk);
+ return 0;
}
static struct platform_driver vt8500_pwm_driver = {
.probe = vt8500_pwm_probe,
- .remove_new = vt8500_pwm_remove,
.driver = {
.name = "vt8500-pwm",
.of_match_table = vt8500_pwm_dt_ids,