@@ -384,12 +384,14 @@ MODULE_DEVICE_TABLE(of, sun4i_pwm_dt_ids);
static int sun4i_pwm_probe(struct platform_device *pdev)
{
+ struct pwm_chip *chip;
struct sun4i_pwm_chip *sun4ichip;
int ret;
sun4ichip = devm_kzalloc(&pdev->dev, sizeof(*sun4ichip), GFP_KERNEL);
if (!sun4ichip)
return -ENOMEM;
+ chip = &sun4ichip->chip;
sun4ichip->data = of_device_get_match_data(&pdev->dev);
if (!sun4ichip->data)
@@ -451,19 +453,19 @@ static int sun4i_pwm_probe(struct platform_device *pdev)
goto err_bus;
}
- sun4ichip->chip.dev = &pdev->dev;
- sun4ichip->chip.ops = &sun4i_pwm_ops;
- sun4ichip->chip.npwm = sun4ichip->data->npwm;
+ chip->dev = &pdev->dev;
+ chip->ops = &sun4i_pwm_ops;
+ chip->npwm = sun4ichip->data->npwm;
spin_lock_init(&sun4ichip->ctrl_lock);
- ret = pwmchip_add(&sun4ichip->chip);
+ ret = pwmchip_add(chip);
if (ret < 0) {
dev_err(&pdev->dev, "failed to add PWM chip: %d\n", ret);
goto err_pwm_add;
}
- platform_set_drvdata(pdev, sun4ichip);
+ platform_set_drvdata(pdev, chip);
return 0;
@@ -477,9 +479,10 @@ static int sun4i_pwm_probe(struct platform_device *pdev)
static void sun4i_pwm_remove(struct platform_device *pdev)
{
- struct sun4i_pwm_chip *sun4ichip = platform_get_drvdata(pdev);
+ struct pwm_chip *chip = platform_get_drvdata(pdev);
+ struct sun4i_pwm_chip *sun4ichip = to_sun4i_pwm_chip(chip);
- pwmchip_remove(&sun4ichip->chip);
+ pwmchip_remove(chip);
clk_disable_unprepare(sun4ichip->bus_clk);
reset_control_assert(sun4ichip->rst);
This prepares the driver for further changes that will drop struct pwm_chip chip from struct sun4i_pwm_chip. Use the pwm_chip as driver data instead of the sun4i_pwm_chip to get access to the pwm_chip in sun4i_pwm_remove() without using sun4ichip->chip. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> --- drivers/pwm/pwm-sun4i.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-)