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Uwe Kleine-König 8139e36632 pwm: lpc18xx-sct: Initialize driver data and hardware before pwmchip_add() 
[ Upstream commit 0401f24cd2 ]

When a driver calls pwmchip_add() it has to be prepared to immediately
get its callbacks called. So move allocation of driver data and hardware
initialization before the call to pwmchip_add().

This fixes a potential NULL pointer exception and a race condition on
register writes.

Fixes: 841e6f90bb ("pwm: NXP LPC18xx PWM/SCT driver")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2022-04-08 13:58:23 +02:00
..
Kconfig pwm: samsung: Describe driver in Kconfig 2021-11-05 11:51:41 +01:00
Makefile pwm: Changes for v5.13-rc1 2021-05-05 12:53:16 -07:00
core.c pwm: Changes for v5.17-rc1 2022-01-20 13:25:01 +02:00
pwm-ab8500.c pwm: ab8500: Simplify using devm_pwmchip_add() 2021-09-02 21:38:40 +02:00
pwm-atmel-hlcdc.c pwm: atmel-hlcdc: Don't check the return code of pwmchip_remove() 2021-09-02 21:38:49 +02:00
pwm-atmel-tcb.c pwm: atmel-tcb: Don't check the return code of pwmchip_remove() 2021-09-02 21:38:50 +02:00
pwm-atmel.c pwm: atmel: Drop unused header 2021-11-05 11:51:40 +01:00
pwm-bcm-iproc.c pwm: Simplify all drivers with explicit of_pwm_n_cells = 3 2021-05-25 18:19:15 +02:00
pwm-bcm-kona.c pwm: bcm-kona: Simplify using devm_pwmchip_add() 2021-09-02 21:38:40 +02:00
pwm-bcm2835.c pwm: Simplify all drivers with explicit of_pwm_n_cells = 3 2021-05-25 18:19:15 +02:00
pwm-berlin.c pwm: berlin: Ensure configuring period and duty_cycle isn't wrongly skipped 2021-07-08 16:09:17 +02:00
pwm-brcmstb.c pwm: brcmstb: Don't check the return code of pwmchip_remove() 2021-09-02 21:38:50 +02:00
pwm-clps711x.c pwm: clps711x: Simplify using devm_pwmchip_add() 2021-06-28 13:23:11 +02:00
pwm-crc.c pwm: crc: Simplify using devm_pwmchip_add() 2021-06-28 13:25:04 +02:00
pwm-cros-ec.c pwm: cros-ec: Don't check the return code of pwmchip_remove() 2021-09-02 21:38:51 +02:00
pwm-dwc.c pwm: Always allocate PWM chip base ID dynamically 2021-03-22 11:53:00 +01:00
pwm-ep93xx.c pwm: ep93xx: Simplify using devm_pwmchip_add() 2021-09-02 21:38:41 +02:00
pwm-fsl-ftm.c pwm: fsl-ftm: Simplify using devm_pwmchip_add() 2021-09-02 21:38:41 +02:00
pwm-hibvt.c pwm: hibvt: Disable the clock only after the PWM was unregistered 2021-09-02 21:38:37 +02:00
pwm-img.c pwm: img: Use only a single idiom to get a runtime PM reference 2021-11-17 17:24:28 +01:00
pwm-imx-tpm.c pwm: imx-tpm: Don't check the return code of pwmchip_remove() 2021-09-02 21:38:52 +02:00
pwm-imx1.c pwm: imx1: Simplify using devm_pwmchip_add() 2021-06-28 13:24:45 +02:00
pwm-imx27.c pwm: imx27: Simplify using devm_pwmchip_add() 2021-09-02 21:38:42 +02:00
pwm-intel-lgm.c pwm: intel-lgm: Simplify using devm_pwmchip_add() 2021-09-02 21:38:42 +02:00
pwm-iqs620a.c pwm: iqs620a: Simplify using devm_pwmchip_add() 2021-09-02 21:38:43 +02:00
pwm-jz4740.c pwm: jz4740: Simplify using devm_pwmchip_add() 2021-09-02 21:38:43 +02:00
pwm-keembay.c pwm: keembay: Simplify using devm_pwmchip_add() 2021-09-02 21:38:44 +02:00
pwm-lp3943.c pwm: lp3943: Simplify using devm_pwmchip_add() 2021-09-02 21:38:44 +02:00
pwm-lpc18xx-sct.c pwm: lpc18xx-sct: Initialize driver data and hardware before pwmchip_add() 2022-04-08 13:58:23 +02:00
pwm-lpc32xx.c pwm: lpc32xx: Simplify using devm_pwmchip_add() 2021-09-02 21:38:44 +02:00
pwm-lpss-pci.c pwm: lpss: Simplify using devm_pwmchip_add() 2021-06-28 13:18:25 +02:00
pwm-lpss-platform.c pwm: lpss: Simplify using devm_pwmchip_add() 2021-06-28 13:18:25 +02:00
pwm-lpss.c pwm: lpss: Simplify using devm_pwmchip_add() 2021-06-28 13:18:25 +02:00
pwm-lpss.h pwm: lpss: Simplify using devm_pwmchip_add() 2021-06-28 13:18:25 +02:00
pwm-mediatek.c pwm: mediatek: Simplify using devm_pwmchip_add() 2021-09-02 21:38:45 +02:00
pwm-meson.c pwm: meson: Simplify using devm_pwmchip_add() 2021-06-28 13:22:07 +02:00
pwm-mtk-disp.c pwm: mtk-disp: Implement atomic API .get_state() 2021-09-02 22:27:46 +02:00
pwm-mxs.c pwm: mxs: Simplify using devm_pwmchip_add() 2021-09-02 21:38:45 +02:00
pwm-ntxec.c pwm: ntxec: Simplify using devm_pwmchip_add() 2021-09-02 21:38:46 +02:00
pwm-omap-dmtimer.c pwm: omap-dmtimer: Don't check the return code of pwmchip_remove() 2021-09-02 21:38:52 +02:00
pwm-pca9685.c pwm: pca9685: Don't check the return code of pwmchip_remove() 2021-09-02 21:38:53 +02:00
pwm-pxa.c pwm: Introduce single-PWM of_xlate function 2021-10-27 17:02:33 +02:00
pwm-raspberrypi-poe.c pwm: raspberrypi-poe: Simplify using devm_pwmchip_add() 2021-09-02 21:38:47 +02:00
pwm-rcar.c pwm: rcar: Don't check the return code of pwmchip_remove() 2021-09-02 21:38:53 +02:00
pwm-renesas-tpu.c pwm: renesas-tpu: Don't check the return code of pwmchip_remove() 2021-09-02 21:38:54 +02:00
pwm-rockchip.c pwm: rockchip: Unprepare clocks only after the PWM was unregistered 2021-09-02 21:38:38 +02:00
pwm-samsung.c pwm: pwm-samsung: Trigger manual update when disabling PWM 2021-11-05 11:51:42 +01:00
pwm-sifive.c pwm: sifive: Don't check the return code of pwmchip_remove() 2021-09-02 21:38:55 +02:00
pwm-sl28cpld.c pwm: sl28cpld: Simplify using devm_pwmchip_add() 2021-09-02 21:38:47 +02:00
pwm-spear.c pwm: spear: Ensure configuring period and duty_cycle isn't wrongly skipped 2021-07-08 16:08:38 +02:00
pwm-sprd.c pwm: sprd: Ensure configuring period and duty_cycle isn't wrongly skipped 2021-07-08 16:08:08 +02:00
pwm-sti.c pwm: sti: Free resources only after pwmchip_remove() 2021-04-09 14:46:58 +02:00
pwm-stm32-lp.c pwm: stm32-lp: Simplify using devm_pwmchip_add() 2021-09-02 21:38:47 +02:00
pwm-stm32.c pwm: Simplify all drivers with explicit of_pwm_n_cells = 3 2021-05-25 18:19:15 +02:00
pwm-stmpe.c pwm: Always allocate PWM chip base ID dynamically 2021-03-22 11:53:00 +01:00
pwm-sun4i.c pwm: sun4i: Don't check the return code of pwmchip_remove() 2021-09-02 21:38:55 +02:00
pwm-tegra.c pwm: tegra: Add runtime PM and OPP support 2021-12-16 14:05:23 +01:00
pwm-tiecap.c pwm: tiecap: Simplify using devm_pwmchip_add() 2021-09-02 21:38:48 +02:00
pwm-tiehrpwm.c pwm: tiehrpwm: Unprepare clock only after the PWM was unregistered 2021-09-02 21:38:38 +02:00
pwm-twl-led.c pwm: twl-led: Simplify using devm_pwmchip_add() 2021-09-02 21:38:48 +02:00
pwm-twl.c pwm: twl: Implement .apply() callback 2021-11-17 17:12:42 +01:00
pwm-visconti.c pwm: visconti: Simplify using devm_pwmchip_add() 2021-11-05 11:51:41 +01:00
pwm-vt8500.c pwm: vt8500: Implement .apply() callback 2021-11-17 17:13:29 +01:00
sysfs.c pwm: Allow store 64-bit duty cycle from sysfs interface 2020-09-24 09:18:14 +02:00