[PATCH 6.1 139/473] pwm: sti: Prepare removing pwm_chip from driver data

Greg Kroah-Hartman
2024-06-06T14:14:24Z

From: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

[ 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/56d53372aacff6871df4d6c6779c9dac94592696.1707900770.git.u.kleine-koenig@pengutronix.de
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>
---
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 c782378dff5e5..8f7aff51787be 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);
--
2.43.0