Marek Vasut c819d7b836 hwrng: stm32 - repair clock handling ... The clock management in this driver does not seem to be correct. The struct hwrng .init callback enables the clock, but there is no matching .cleanup callback to disable the clock. The clock get disabled as some later point by runtime PM suspend callback. Furthermore, both runtime PM and sleep suspend callbacks access registers first and disable clock which are used for register access second. If the IP is already in RPM suspend and the system enters sleep state, the sleep callback will attempt to access registers while the register clock are already disabled. This bug has been fixed once before already in commit 9bae54942b ("hwrng: stm32 - fix pm_suspend issue"), and regressed in commit ff4e46104f ("hwrng: stm32 - rework power management sequences") . Fix this slightly differently, disable register clock at the end of .init callback, this way the IP is disabled after .init. On every access to the IP, which really is only stm32_rng_read(), do pm_runtime_get_sync() which is already done in stm32_rng_read() to bring the IP from RPM suspend, and pm_runtime_mark_last_busy()/pm_runtime_put_sync_autosuspend() to put it back into RPM suspend. Change sleep suspend/resume callbacks to enable and disable register clock around register access, as those cannot use the RPM suspend/resume callbacks due to slightly different initialization in those sleep callbacks. This way, the register access should always be performed with clock surely enabled. Fixes: ff4e46104f ("hwrng: stm32 - rework power management sequences") Signed-off-by: Marek Vasut <marex@denx.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>		2024-04-26 17:26:10 +08:00
..
agp	char/agp: remove agp_bridge_data::type	2024-02-16 18:07:13 +01:00
hw_random	hwrng: stm32 - repair clock handling	2024-04-26 17:26:10 +08:00
ipmi	ipmi: Remove usage of the deprecated ida_simple_xx() API	2023-12-19 06:33:45 -06:00
mwave	char/mwave: Adjust io port register size	2021-12-03 14:27:06 +01:00
tpm	- Kuan-Wei Chiu has developed the well-named series "lib min_heap: Min	2024-03-14 18:03:09 -07:00
xilinx_hwicap	char: xilinx_hwicap: Fix NULL vs IS_ERR() bug	2024-03-07 21:48:38 +00:00
xillybus	char: xillybus: Convert to platform remove callback returning void	2024-03-07 21:49:30 +00:00
adi.c
apm-emulation.c	apm-emulation: drop unexpected word "the" in the comments	2022-06-27 16:15:27 +02:00
applicom.c	applicom: Fix PCI device refcount leak in applicom_init()	2023-01-20 13:05:39 +01:00
applicom.h
bsr.c	char: Explicitly include correct DT includes	2023-07-30 18:15:27 +02:00
ds1620.c
dsp56k.c	dsp56k: make dsp56k_class a static const structure	2023-06-23 10:27:08 +02:00
dtlk.c
hangcheck-timer.c
hpet.c	hpet: remove hpets::hp_clocksource	2024-03-07 21:48:00 +00:00
Kconfig	arch: Remove Itanium (IA-64) architecture	2023-09-11 08:13:17 +00:00
lp.c	char: lp: make lp_class a static const structure	2023-06-23 10:27:11 +02:00
Makefile	arch: Remove Itanium (IA-64) architecture	2023-09-11 08:13:17 +00:00
mem.c	Char/Misc and other driver changes for 6.7-rc1	2023-11-03 14:51:08 -10:00
misc.c	char: misc: make misc_class a static const structure	2023-06-23 10:27:15 +02:00
nsc_gpio.c
nvram.c
nwbutton.c
nwbutton.h
nwflash.c
pc8736x_gpio.c
powernv-op-panel.c	powerpc/powernv: Fix fall-through warning for Clang	2021-07-13 19:21:41 -05:00
ppdev.c	ppdev: Remove usage of the deprecated ida_simple_xx() API	2024-01-04 16:43:20 +01:00
ps3flash.c
random.c	iov_iter: replace import_single_range() with import_ubuf()	2023-12-05 11:57:37 +01:00
scx200_gpio.c
sonypi.c	char: convert to new timestamp accessors	2023-10-18 13:26:16 +02:00
tlclk.c
toshiba.c	module: remove never implemented MODULE_SUPPORTED_DEVICE	2021-03-17 13:16:18 -07:00
ttyprintk.c	tty: ttyprintk: convert to u8 and size_t	2023-12-08 12:02:38 +01:00
uv_mmtimer.c
virtio_console.c	tty: hvc: convert to u8 and size_t	2023-12-08 12:02:37 +01:00