From: Uwe Kleine-König u.kleine-koenig@pengutronix.de
stable inclusion from stable-v6.6.33 commit cedd7e53693532af72b17b0591f01eec084ef9c5 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IAD6H2
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 54272761ce7c475fa30a31b59b0cb89f7652b39e ]
This prepares the driver for further changes that will drop struct pwm_chip chip from struct sti_pwm_chip. Use the pwm_chip as driver data instead of the sti_pwm_chip to get access to the pwm_chip in sti_pwm_remove() without using pc->chip.
Link: https://lore.kernel.org/r/56d53372aacff6871df4d6c6779c9dac94592696.170790077... Signed-off-by: Uwe Kleine-König u.kleine-koenig@pengutronix.de Stable-dep-of: 5bb0b194aeee ("pwm: sti: Simplify probe function using devm functions") Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Wang Hai wanghai38@huawei.com --- drivers/pwm/pwm-sti.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-)
diff --git a/drivers/pwm/pwm-sti.c b/drivers/pwm/pwm-sti.c index c782378dff5e..8f7aff51787b 100644 --- a/drivers/pwm/pwm-sti.c +++ b/drivers/pwm/pwm-sti.c @@ -571,6 +571,7 @@ static int sti_pwm_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct sti_pwm_compat_data *cdata; + struct pwm_chip *chip; struct sti_pwm_chip *pc; unsigned int i; int irq, ret; @@ -578,6 +579,7 @@ static int sti_pwm_probe(struct platform_device *pdev) pc = devm_kzalloc(dev, sizeof(*pc), GFP_KERNEL); if (!pc) return -ENOMEM; + chip = &pc->chip;
cdata = devm_kzalloc(dev, sizeof(*cdata), GFP_KERNEL); if (!cdata) @@ -654,9 +656,9 @@ static int sti_pwm_probe(struct platform_device *pdev) return -ENOMEM; }
- pc->chip.dev = dev; - pc->chip.ops = &sti_pwm_ops; - pc->chip.npwm = max(cdata->pwm_num_devs, cdata->cpt_num_devs); + chip->dev = dev; + chip->ops = &sti_pwm_ops; + chip->npwm = max(cdata->pwm_num_devs, cdata->cpt_num_devs);
for (i = 0; i < cdata->cpt_num_devs; i++) { struct sti_cpt_ddata *ddata = &cdata->ddata[i]; @@ -665,23 +667,24 @@ static int sti_pwm_probe(struct platform_device *pdev) mutex_init(&ddata->lock); }
- ret = pwmchip_add(&pc->chip); + ret = pwmchip_add(chip); if (ret < 0) { clk_unprepare(pc->pwm_clk); clk_unprepare(pc->cpt_clk); return ret; }
- platform_set_drvdata(pdev, pc); + platform_set_drvdata(pdev, chip);
return 0; }
static void sti_pwm_remove(struct platform_device *pdev) { - struct sti_pwm_chip *pc = platform_get_drvdata(pdev); + struct pwm_chip *chip = platform_get_drvdata(pdev); + struct sti_pwm_chip *pc = to_sti_pwmchip(chip);
- pwmchip_remove(&pc->chip); + pwmchip_remove(chip);
clk_unprepare(pc->pwm_clk); clk_unprepare(pc->cpt_clk);