linux/drivers/pwm
Ryo Kodama 6225f9c64b pwm: rcar: Fix a condition to prevent mismatch value setting to duty
This patch fixes an issue that is possible to set mismatch value to duty
for R-Car PWM if we input the following commands:

 # cd /sys/class/pwm/<pwmchip>/
 # echo 0 > export
 # cd pwm0
 # echo 30 > period
 # echo 30 > duty_cycle
 # echo 0 > duty_cycle
 # cat duty_cycle
 0
 # echo 1 > enable
 --> Then, the actual duty_cycle is 30, not 0.

So, this patch adds a condition into rcar_pwm_config() to fix this
issue.

Signed-off-by: Ryo Kodama <ryo.kodama.vz@renesas.com>
[shimoda: revise the commit log and add Fixes and Cc tags]
Fixes: ed6c1476bf ("pwm: Add support for R-Car PWM Timer")
Cc: Cc: <stable@vger.kernel.org> # v4.4+
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
2018-03-28 01:20:13 +02:00
..
core.c
Kconfig pwm: Remove depends on AVR32 2018-03-28 00:57:05 +02:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pwm-ab8500.c
pwm-atmel-hlcdc.c
pwm-atmel-tcb.c pwm: atmel-tcb: Delete an error message for a failed memory allocation 2018-03-27 23:28:53 +02:00
pwm-atmel.c
pwm-bcm-iproc.c
pwm-bcm-kona.c
pwm-bcm2835.c pwm: bcm2835: Support for polarity setting via DT 2017-08-21 07:27:58 +02:00
pwm-berlin.c
pwm-bfin.c
pwm-brcmstb.c
pwm-clps711x.c
pwm-crc.c
pwm-cros-ec.c
pwm-ep93xx.c
pwm-fsl-ftm.c
pwm-hibvt.c pwm: hibvt: Explicitly request exclusive reset control 2017-08-21 08:52:40 +02:00
pwm-img.c pwm: img: Add runtime PM 2017-11-15 10:38:37 +01:00
pwm-imx.c pwm: imx: Let PWM be active during suspend 2018-03-28 00:17:36 +02:00
pwm-jz4740.c pwm: jz4740: Add support for devicetree 2018-03-28 00:23:56 +02:00
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: mediatek: Improve precision in rate calculation 2018-03-28 00:32:25 +02:00
pwm-meson.c pwm: meson: Add clock source configuration for Meson-AXG 2017-12-05 09:51:36 +01:00
pwm-mtk-disp.c
pwm-mxs.c
pwm-omap-dmtimer.c
pwm-pca9685.c pwm: pca9685: clarify pca9685_set_sleep_mode() interface. 2017-07-25 13:41:59 +02:00
pwm-puv3.c pwm: puv3: Delete an error message for a failed memory allocation 2018-03-27 23:27:05 +02:00
pwm-pxa.c
pwm-rcar.c pwm: rcar: Fix a condition to prevent mismatch value setting to duty 2018-03-28 01:20:13 +02:00
pwm-renesas-tpu.c pwm: renesas-tpu: Remove support for SH7372 2017-08-18 17:27:14 +02:00
pwm-rockchip.c pwm: rockchip: Add rk3328 support 2017-08-18 17:44:34 +02:00
pwm-samsung.c pwm: pwm-samsung: fix suspend/resume support 2017-08-21 10:39:12 +02:00
pwm-spear.c
pwm-sti.c
pwm-stm32-lp.c pwm: stm32: LPTimer: Use 3 cells ->of_xlate() 2018-03-28 00:54:56 +02:00
pwm-stm32.c pwm: stm32: Protect common prescaler for all channels 2018-03-28 00:37:37 +02:00
pwm-stmpe.c pwm: stmpe: Fix wrong register offset for hwpwm=2 case 2017-12-05 09:33:05 +01:00
pwm-sun4i.c pwm: sun4i: Simplify controller mapping 2018-03-28 01:12:12 +02:00
pwm-tegra.c pwm: tegra: Explicitly request exclusive reset control 2017-08-21 08:53:07 +02:00
pwm-tiecap.c pwm: tiecap: Set driver data before runtime PM enable 2017-08-21 08:31:37 +02:00
pwm-tiehrpwm.c pwm: tiehrpwm: Set driver data before runtime PM enable 2017-08-21 08:42:56 +02:00
pwm-tipwmss.c
pwm-twl-led.c mfd: twl: Move header file out of I2C realm 2017-09-04 14:41:02 +01:00
pwm-twl.c mfd: twl: Move header file out of I2C realm 2017-09-04 14:41:02 +01:00
pwm-vt8500.c pwm: vt8500: Undo preparation of a clock source. 2017-07-25 13:43:28 +02:00
pwm-zx.c pwm: Add ZTE ZX PWM device driver 2017-08-21 08:11:24 +02:00
sysfs.c pwm: sysfs: Use put_device() instead of kfree() 2018-03-28 01:18:53 +02:00