From 896c450960f5b11f81eaa5822db0801b03be3e68 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Fri, 29 Sep 2023 18:19:18 +0200 Subject: [PATCH] pwm: cros-ec: Simplify using devm_pwmchip_add() and dev_err_probe() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Using devm_pwmchip_add() allows to drop pwmchip_remove() from the remove function which makes this function empty. Then there is no user of drvdata left and platform_set_drvdata() can be dropped, too. Further simplify and improve error returning using dev_err_probe(). Link: https://lore.kernel.org/r/20230929161918.2410424-12-u.kleine-koenig@pengutronix.de Signed-off-by: Uwe Kleine-König Signed-off-by: Thierry Reding --- drivers/pwm/pwm-cros-ec.c | 33 ++++++++------------------------- 1 file changed, 8 insertions(+), 25 deletions(-) diff --git a/drivers/pwm/pwm-cros-ec.c b/drivers/pwm/pwm-cros-ec.c index 5ab84e0cb911..4fbd23e4ef69 100644 --- a/drivers/pwm/pwm-cros-ec.c +++ b/drivers/pwm/pwm-cros-ec.c @@ -265,10 +265,8 @@ static int cros_ec_pwm_probe(struct platform_device *pdev) struct pwm_chip *chip; int ret; - if (!ec) { - dev_err(dev, "no parent EC device\n"); - return -EINVAL; - } + if (!ec) + return dev_err_probe(dev, -EINVAL, "no parent EC device\n"); ec_pwm = devm_kzalloc(dev, sizeof(*ec_pwm), GFP_KERNEL); if (!ec_pwm) @@ -289,10 +287,8 @@ static int cros_ec_pwm_probe(struct platform_device *pdev) chip->npwm = CROS_EC_PWM_DT_COUNT; } else { ret = cros_ec_num_pwms(ec_pwm); - if (ret < 0) { - dev_err(dev, "Couldn't find PWMs: %d\n", ret); - return ret; - } + if (ret < 0) + return dev_err_probe(dev, ret, "Couldn't find PWMs\n"); chip->npwm = ret; } @@ -303,23 +299,11 @@ static int cros_ec_pwm_probe(struct platform_device *pdev) dev_dbg(dev, "Probed %u PWMs\n", chip->npwm); - ret = pwmchip_add(chip); - if (ret < 0) { - dev_err(dev, "cannot register PWM: %d\n", ret); - return ret; - } + ret = devm_pwmchip_add(dev, chip); + if (ret < 0) + return dev_err_probe(dev, ret, "cannot register PWM\n"); - platform_set_drvdata(pdev, ec_pwm); - - return ret; -} - -static void cros_ec_pwm_remove(struct platform_device *dev) -{ - struct cros_ec_pwm_device *ec_pwm = platform_get_drvdata(dev); - struct pwm_chip *chip = &ec_pwm->chip; - - pwmchip_remove(chip); + return 0; } #ifdef CONFIG_OF @@ -333,7 +317,6 @@ MODULE_DEVICE_TABLE(of, cros_ec_pwm_of_match); static struct platform_driver cros_ec_pwm_driver = { .probe = cros_ec_pwm_probe, - .remove_new = cros_ec_pwm_remove, .driver = { .name = "cros-ec-pwm", .of_match_table = of_match_ptr(cros_ec_pwm_of_match),