6afaf55a14
[ Upstream commit 37f7707077f5ea2515bf4b1dc7fad43f8e12993e ]
The hardware only supports a single period length for both PWM outputs. So
atmel_tcb_pwm_config() checks the configuration of the other output if it's
compatible with the currently requested setting. The register values are
then actually updated in atmel_tcb_pwm_enable(). To make this race free
the lock must be held during the whole process, so grab the lock in
.apply() instead of individually in atmel_tcb_pwm_disable() and
atmel_tcb_pwm_enable() which then also covers atmel_tcb_pwm_config().
To simplify handling, use the guard helper to let the compiler care for
unlocking. Otherwise unlocking would be more difficult as there is more
than one exit path in atmel_tcb_pwm_apply().
Fixes:
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|---|---|---|
| .. | ||
| core.c | ||
| Kconfig | ||
| Makefile | ||
| pwm-ab8500.c | ||
| pwm-atmel-hlcdc.c | ||
| pwm-atmel-tcb.c | ||
| pwm-atmel.c | ||
| pwm-bcm2835.c | ||
| pwm-bcm-iproc.c | ||
| pwm-bcm-kona.c | ||
| pwm-berlin.c | ||
| pwm-brcmstb.c | ||
| pwm-clk.c | ||
| pwm-clps711x.c | ||
| pwm-crc.c | ||
| pwm-cros-ec.c | ||
| pwm-dwc.c | ||
| pwm-ep93xx.c | ||
| pwm-fsl-ftm.c | ||
| pwm-hibvt.c | ||
| pwm-img.c | ||
| pwm-imx1.c | ||
| pwm-imx27.c | ||
| pwm-imx-tpm.c | ||
| pwm-intel-lgm.c | ||
| pwm-iqs620a.c | ||
| pwm-jz4740.c | ||
| pwm-keembay.c | ||
| pwm-lp3943.c | ||
| pwm-lpc18xx-sct.c | ||
| pwm-lpc32xx.c | ||
| pwm-lpss-pci.c | ||
| pwm-lpss-platform.c | ||
| pwm-lpss.c | ||
| pwm-lpss.h | ||
| pwm-mediatek.c | ||
| pwm-meson.c | ||
| pwm-mtk-disp.c | ||
| pwm-mxs.c | ||
| pwm-ntxec.c | ||
| pwm-omap-dmtimer.c | ||
| pwm-pca9685.c | ||
| pwm-pxa.c | ||
| pwm-raspberrypi-poe.c | ||
| pwm-rcar.c | ||
| pwm-renesas-tpu.c | ||
| pwm-rockchip.c | ||
| pwm-samsung.c | ||
| pwm-sifive.c | ||
| pwm-sl28cpld.c | ||
| pwm-spear.c | ||
| pwm-sprd.c | ||
| pwm-sti.c | ||
| pwm-stm32-lp.c | ||
| pwm-stm32.c | ||
| pwm-stmpe.c | ||
| pwm-sun4i.c | ||
| pwm-sunplus.c | ||
| pwm-tegra.c | ||
| pwm-tiecap.c | ||
| pwm-tiehrpwm.c | ||
| pwm-twl-led.c | ||
| pwm-twl.c | ||
| pwm-visconti.c | ||
| pwm-vt8500.c | ||
| pwm-xilinx.c | ||
| sysfs.c | ||