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pwm: mtk-disp: Propagate errors in .get_state() to the caller 

.get_state() can return an error indication. Make use of it to propagate
failing hardware accesses.

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20221130152148.2769768-9-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>
This commit is contained in:
Uwe Kleine-König 2022-12-02 19:35:33 +01:00 committed by Thierry Reding
parent 51b9f2fb38
commit 2f47786ce4
1 changed files with 2 additions and 2 deletions
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4
drivers/pwm/pwm-mtk-disp.c
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@ -184,14 +184,14 @@ static int mtk_disp_pwm_get_state(struct pwm_chip *chip,
err = clk_prepare_enable(mdp->clk_main); err = clk_prepare_enable(mdp->clk_main);
if (err < 0) { if (err < 0) {
dev_err(chip->dev, "Can't enable mdp->clk_main: %pe\n", ERR_PTR(err)); dev_err(chip->dev, "Can't enable mdp->clk_main: %pe\n", ERR_PTR(err));
return 0; return err;
} }
err = clk_prepare_enable(mdp->clk_mm); err = clk_prepare_enable(mdp->clk_mm);
if (err < 0) { if (err < 0) {
dev_err(chip->dev, "Can't enable mdp->clk_mm: %pe\n", ERR_PTR(err)); dev_err(chip->dev, "Can't enable mdp->clk_mm: %pe\n", ERR_PTR(err));
clk_disable_unprepare(mdp->clk_main); clk_disable_unprepare(mdp->clk_main);
return 0; return err;
} }
rate = clk_get_rate(mdp->clk_main); rate = clk_get_rate(mdp->clk_main);