Merge tag 'pwm/for-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux

Pull pwm updates from Uwe Kleine-König:
 "Apart from the usual mix of new drivers (pwm-argon-fan-hat), adding
  support for variants to existing drivers, minor improvements to both
  drivers and docs, device tree documenation updates, the noteworthy
  changes are:

   - A hwmon companion driver to pwm-mc33xs2410 living in drivers/hwmon
     and acked by Guenter Roeck

   - chardev support for PWM devices. This leverages atomic PWM updates
     to userspace and at the same time simplifies and accelerates PWM
     configuration changes"

* tag 'pwm/for-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux: (35 commits)
  pwm: raspberrypi-poe: Fix spelling mistake "Firwmware" -> "Firmware"
  hwmon: add support for MC33XS2410 hardware monitoring
  pwm: mc33xs2410: add hwmon support
  pwm: img: Remove redundant pm_runtime_mark_last_busy() calls
  pwm: Expose PWM_WFHWSIZE in public header
  dt-bindings: pwm: Convert lpc32xx-pwm.txt to yaml format
  docs: pwm: Adapt Locking paragraph to reality
  pwm: twl-led: Drop driver local locking
  pwm: sun4i: Drop driver local locking
  pwm: sti: Drop driver local locking
  pwm: microchip-core: Drop driver local locking
  pwm: lpc18xx-sct: Drop driver local locking
  pwm: fsl-ftm: Drop driver local locking
  pwm: clps711x: Drop driver local locking
  pwm: atmel: Drop driver local locking
  pwm: argon-fan-hat: Add Argon40 Fan HAT support
  dt-bindings: pwm: argon40,fan-hat: Document Argon40 Fan HAT
  dt-bindings: vendor-prefixes: Document Argon40
  pwm: pwm-mediatek: Add support for PWM IP V3.0.2 in MT6991/MT8196
  pwm: pwm-mediatek: Pass PWM_CK_26M_SEL from platform data
  ...

1 files changed, 0 insertions, 12 deletions

diff --git a/drivers/pwm/pwm-atmel.c b/drivers/pwm/pwm-atmel.c
index b2f0abbbad63..06d22d0f7b26 100644
--- a/drivers/pwm/pwm-atmel.c
+++ b/drivers/pwm/pwm-atmel.c
@@ -91,9 +91,6 @@ struct atmel_pwm_chip {
 	 * hardware.
 	 */
 	u32 update_pending;
-
-	/* Protects .update_pending */
-	spinlock_t lock;
 };
 
 static inline struct atmel_pwm_chip *to_atmel_pwm_chip(struct pwm_chip *chip)
@@ -145,8 +142,6 @@ static void atmel_pwm_update_pending(struct atmel_pwm_chip *chip)
 
 static void atmel_pwm_set_pending(struct atmel_pwm_chip *chip, unsigned int ch)
 {
-	spin_lock(&chip->lock);
-
 	/*
 	 * Clear pending flags in hardware because otherwise there might still
 	 * be a stale flag in ISR.
@@ -154,16 +149,12 @@ static void atmel_pwm_set_pending(struct atmel_pwm_chip *chip, unsigned int ch)
 	atmel_pwm_update_pending(chip);
 
 	chip->update_pending |= (1 << ch);
-
-	spin_unlock(&chip->lock);
 }
 
 static int atmel_pwm_test_pending(struct atmel_pwm_chip *chip, unsigned int ch)
 {
 	int ret = 0;
 
-	spin_lock(&chip->lock);
-
 	if (chip->update_pending & (1 << ch)) {
 		atmel_pwm_update_pending(chip);
 
@@ -171,8 +162,6 @@ static int atmel_pwm_test_pending(struct atmel_pwm_chip *chip, unsigned int ch)
 			ret = 1;
 	}
 
-	spin_unlock(&chip->lock);
-
 	return ret;
 }
 
@@ -509,7 +498,6 @@ static int atmel_pwm_probe(struct platform_device *pdev)
 	atmel_pwm->data = of_device_get_match_data(&pdev->dev);
 
 	atmel_pwm->update_pending = 0;
-	spin_lock_init(&atmel_pwm->lock);
 
 	atmel_pwm->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(atmel_pwm->base))