diff options
| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2023-09-29 19:19:09 +0300 |
|---|---|---|
| committer | Thierry Reding <thierry.reding@gmail.com> | 2023-10-13 11:07:18 +0300 |
| commit | 2ce7b7f6704c9a8040fb12eb2b682986d9129e68 (patch) | |
| tree | abc1292be4fa3d78d312d977030abf87970f6762 /drivers | |
| parent | b498c14efd4241d79999b9bb943e963eb982450c (diff) | |
| download | linux-2ce7b7f6704c9a8040fb12eb2b682986d9129e68.tar.xz | |
pwm: bcm2835: Simplify using devm functions
With devm_clk_get_enabled() the call to clk_disable_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 bcm2835_pwm_remove() the only
user of platform_get_drvdata() is gone and so platform_set_drvdata() can
be dropped from .probe(), too.
Also use dev_err_probe() for simplified (and improved) error reporting.
Link: https://lore.kernel.org/r/20230929161918.2410424-3-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')
| -rw-r--r-- | drivers/pwm/pwm-bcm2835.c | 27 |
1 files changed, 4 insertions, 23 deletions
diff --git a/drivers/pwm/pwm-bcm2835.c b/drivers/pwm/pwm-bcm2835.c index af318a35d510..8c69ddfea2d0 100644 --- a/drivers/pwm/pwm-bcm2835.c +++ b/drivers/pwm/pwm-bcm2835.c @@ -146,39 +146,21 @@ static int bcm2835_pwm_probe(struct platform_device *pdev) if (IS_ERR(pc->base)) return PTR_ERR(pc->base); - pc->clk = devm_clk_get(&pdev->dev, NULL); + pc->clk = devm_clk_get_enabled(&pdev->dev, NULL); if (IS_ERR(pc->clk)) return dev_err_probe(&pdev->dev, PTR_ERR(pc->clk), "clock not found\n"); - ret = clk_prepare_enable(pc->clk); - if (ret) - return ret; - pc->chip.dev = &pdev->dev; pc->chip.ops = &bcm2835_pwm_ops; pc->chip.npwm = 2; - platform_set_drvdata(pdev, pc); - - ret = pwmchip_add(&pc->chip); + ret = devm_pwmchip_add(&pdev->dev, &pc->chip); if (ret < 0) - goto add_fail; + return dev_err_probe(&pdev->dev, ret, + "failed to add pwmchip\n"); return 0; - -add_fail: - clk_disable_unprepare(pc->clk); - return ret; -} - -static void bcm2835_pwm_remove(struct platform_device *pdev) -{ - struct bcm2835_pwm *pc = platform_get_drvdata(pdev); - - pwmchip_remove(&pc->chip); - - clk_disable_unprepare(pc->clk); } static const struct of_device_id bcm2835_pwm_of_match[] = { @@ -193,7 +175,6 @@ static struct platform_driver bcm2835_pwm_driver = { .of_match_table = bcm2835_pwm_of_match, }, .probe = bcm2835_pwm_probe, - .remove_new = bcm2835_pwm_remove, }; module_platform_driver(bcm2835_pwm_driver); |