AngeloGioacchino Del Regno 655b647245 pwm: mtk-disp: Configure double buffering before reading in .get_state() ... [ Upstream commit b16c310115f2084b8826a35b77ef42bab6786d9f ] The DISP_PWM controller's default behavior is to always use register double buffering: all reads/writes are then performed on shadow registers instead of working registers and this becomes an issue in case our chosen configuration in Linux is different from the default (or from the one that was pre-applied by the bootloader). An example of broken behavior is when the controller is configured to use shadow registers, but this driver wants to configure it otherwise: what happens is that the .get_state() callback is called right after registering the pwmchip and checks whether the PWM is enabled by reading the DISP_PWM_EN register; At this point, if shadow registers are enabled but their content was not committed before booting Linux, we are *not* reading the current PWM enablement status, leading to the kernel knowing that the hardware is actually enabled when, in reality, it's not. The aforementioned issue emerged since this driver was fixed with commit 0b5ef3429d8f ("pwm: mtk-disp: Fix the parameters calculated by the enabled flag of disp_pwm") making it to read the enablement status from the right register. Configure the controller in the .get_state() callback to avoid this desync issue and get the backlight properly working again. Fixes: 3f2b167349 ("pwm: mtk-disp: Implement atomic API .get_state()") Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: Nícolas F. R. A. Prado <nfraprado@collabora.com> Tested-by: Nícolas F. R. A. Prado <nfraprado@collabora.com> Reviewed-by: Alexandre Mergnat <amergnat@baylibre.com> Tested-by: Alexandre Mergnat <amergnat@baylibre.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-05-11 23:03:37 +09:00
..
accessibility
acpi	ACPI: bus: Ensure that notify handlers are not running after removal	2023-05-11 23:03:16 +09:00
amba
android
ata	ata: ahci: Revert "ata: ahci: Add Tiger Lake UP{3,4} AHCI controller"	2023-03-10 09:32:32 +01:00
atm	atm: idt77252: fix kmemleak when rmmod idt77252	2023-03-30 12:49:09 +02:00
auxdisplay	auxdisplay: hd44780: Fix potential memory leak in hd44780_remove()	2023-03-11 13:55:16 +01:00
base	cacheinfo: Check sib_leaf in cache_leaves_are_shared()	2023-05-11 23:03:29 +09:00
bcma
block	block: ublk_drv: mark device as LIVE before adding disk	2023-04-20 12:35:11 +02:00
bluetooth	Revert "Bluetooth: btsdio: fix use after free bug in btsdio_remove due to unfinished work"	2023-05-11 23:03:26 +09:00
bus	bus: mhi: host: Range check CHDBOFF and ERDBOFF	2023-05-11 23:03:05 +09:00
cdrom
char	ipmi: ASPEED_BT_IPMI_BMC: select REGMAP_MMIO instead of depending on it	2023-05-11 23:03:26 +09:00
clk	clk: qcom: dispcc-qcm2290: Remove inexistent DSI1PHY clk	2023-05-11 23:03:35 +09:00
clocksource	clocksource/drivers/davinci: Fix memory leak in davinci_timer_register when init fails	2023-05-11 23:03:35 +09:00
comedi
connector
counter	counter: 104-quad-8: Fix Synapse action reported for Index signals	2023-04-13 16:55:31 +02:00
cpufreq	cpufreq: use correct unit when verify cur freq	2023-05-11 23:03:16 +09:00
cpuidle	RISC-V: Align SBI probe implementation with spec	2023-05-11 23:03:04 +09:00
crypto	crypto: sa2ul - Select CRYPTO_DES	2023-05-11 23:03:20 +09:00
cxl	cxl/hdm: Fail upon detecting 0-sized decoders	2023-05-11 23:03:05 +09:00
dax	dax/kmem: Fix leak of memory-hotplug resources	2023-03-10 09:34:25 +01:00
dca
devfreq
dio
dma	dmaengine: mv_xor_v2: Fix an error code.	2023-05-11 23:03:36 +09:00
dma-buf	dma-buf: actually set signaling bit for private stub fences	2023-02-09 11:28:23 +01:00
edac	EDAC/skx: Fix overflows on the DRAM row address mapping arrays	2023-05-11 23:03:08 +09:00
eisa
extcon
firewire	firewire: fix memory leak for payload of request subaction to IEC 61883-1 FCP region	2023-02-09 11:27:59 +01:00
firmware	firmware: stratix10-svc: Fix an NULL vs IS_ERR() bug in probe	2023-05-11 23:03:30 +09:00
fpga	fpga: bridge: fix kernel-doc parameter description	2023-05-11 23:03:27 +09:00
fsi	use less confusing names for iov_iter direction initializers	2023-02-09 11:28:04 +01:00
gnss
gpio	gpiolib: acpi: Add a ignore wakeup quirk for Clevo NL5xNU	2023-05-01 08:26:27 +09:00
gpu	drm/panel: novatek-nt35950: Only unregister DSI1 if it exists	2023-05-11 23:03:29 +09:00
greybus
hid	HID: amd_sfh: Handle "no sensors" enabled for SFH1.1	2023-05-11 23:03:29 +09:00
hsi
hte
hv	Drivers: vmbus: Check for channel allocation before looking up relids	2023-04-13 16:55:18 +02:00
hwmon	hwmon: (pmbus/fsp-3y) Fix functionality bitmask in FSP-3Y YM-2151E	2023-05-11 23:03:16 +09:00
hwspinlock
hwtracing	coresight: etm_pmu: Set the module field	2023-05-11 23:03:29 +09:00
i2c	i2c: xiic: xiic_xfer(): Fix runtime PM leak on error path	2023-05-11 23:03:30 +09:00
i3c
idle	Revert "cpuidle, intel_idle: Fix CPUIDLE_FLAG_IRQ_ENABLE *again*"	2023-04-06 12:10:58 +02:00
iio	iio: light: max44009: add missing OF device matching	2023-05-11 23:03:27 +09:00
infiniband	RDMA/mlx5: Use correct device num_ports when modify DC	2023-05-11 23:03:35 +09:00
input	Input: raspberrypi-ts - fix refcount leak in rpi_ts_probe	2023-05-11 23:03:35 +09:00
interconnect	interconnect: qcom: rpm: drop bogus pm domain attach	2023-05-11 23:03:28 +09:00
iommu	iommu/amd: Set page size bitmap during V2 domain allocation	2023-05-11 23:03:34 +09:00
ipack
irqchip	irqchip/irq-bcm7120-l2: Set IRQ_LEVEL for level triggered interrupts	2023-03-10 09:33:07 +01:00
isdn	use less confusing names for iov_iter direction initializers	2023-02-09 11:28:04 +01:00
leds	leds: tca6507: Fix error handling of using fwnode_property_read_string	2023-05-11 23:03:36 +09:00
macintosh	macintosh: via-pmu-led: requires ATA to be set	2023-05-11 23:03:31 +09:00
mailbox	mailbox: mpfs: switch to txdone_poll	2023-05-11 23:03:12 +09:00
mcb
md	md/raid10: don't call bio_start_io_acct twice for bio which experienced read error	2023-05-11 23:03:23 +09:00
media	media: mediatek: vcodec: add remove function for decoder platform driver	2023-05-11 23:03:16 +09:00
memory	memory: tegra30-emc: fix interconnect registration race	2023-03-22 13:33:56 +01:00
memstick	memstick: fix memory leak if card device is never registered	2023-04-26 14:28:39 +02:00
message
mfd	mfd: arizona: Use pm_runtime_resume_and_get() to prevent refcnt leak	2023-03-11 13:55:32 +01:00
misc	vmci_host: fix a race condition in vmci_host_poll() causing GPF	2023-05-11 23:03:28 +09:00
mmc	mmc: sdhci-of-esdhc: fix quirk to ignore command inhibit for data	2023-05-11 23:03:11 +09:00
most
mtd	ubi: Fix return value overwrite issue in try_write_vid_and_data()	2023-05-11 23:03:05 +09:00
mux
net	net: amd: Fix link leak when verifying config failed	2023-05-11 23:03:26 +09:00
nfc	nfc: st-nci: Fix use after free bug in ndlc_remove due to race condition	2023-03-22 13:33:46 +01:00
ntb
nubus
nvdimm	cxl/pmem: Fix nvdimm registration races	2023-03-10 09:34:20 +01:00
nvme	nvme-fcloop: fix "inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage"	2023-05-11 23:03:22 +09:00
nvmem	nvmem: core: fix return value	2023-02-09 11:28:25 +01:00
of	of: Fix modalias string generation	2023-05-11 23:03:28 +09:00
opp	OPP: fix error checking in opp_migrate_dentry()	2023-03-10 09:33:01 +01:00
parisc
parport
pci	PCI/PM: Extend D3hot delay for NVIDIA HDA controllers	2023-05-11 23:03:29 +09:00
pcmcia
peci
perf	perf/arm-cmn: Fix port detection for CMN-700	2023-05-11 23:03:16 +09:00
phy	phy: qcom-qmp-pcie: sc8180x PCIe PHY has 2 lanes	2023-05-11 23:02:59 +09:00
pinctrl	pinctrl: ralink: reintroduce ralink,rt2880-pinmux compatible string	2023-05-11 23:03:36 +09:00
platform	platform/chrome: cros_typec_switch: Add missing fwnode_handle_put()	2023-05-11 23:03:16 +09:00
pnp
power	power: supply: rk817: Fix low SOC bugs	2023-05-11 23:03:34 +09:00
powercap	powercap: fix possible name leak in powercap_register_zone()	2023-03-10 09:32:56 +01:00
pps
ps3
ptp	ptp_qoriq: fix memory leak in probe()	2023-04-06 12:10:44 +02:00
pwm	pwm: mtk-disp: Configure double buffering before reading in .get_state()	2023-05-11 23:03:37 +09:00
rapidio
ras
regulator	regulator: stm32-pwr: fix of_iomap leak	2023-05-11 23:03:16 +09:00
remoteproc	remoteproc/mtk_scp: Move clk ops outside send_lock	2023-03-10 09:34:26 +01:00
reset	reset: uniphier-glue: Fix possible null-ptr-deref	2023-02-01 08:34:05 +01:00
rpmsg	rpmsg: glink: Propagate TX failures in intentless mode as well	2023-05-11 23:03:16 +09:00
rtc	rtc: k3: handle errors while enabling wake irq	2023-05-11 23:03:33 +09:00
s390	s390/vfio-ap: fix memory leak in vfio_ap device driver	2023-04-06 12:10:46 +02:00
sbus
scsi	scsi: lpfc: Fix ioremap issues in lpfc_sli4_pci_mem_setup()	2023-05-11 23:03:21 +09:00
sh
siox
slimbus
soc	soc: renesas: renesas-soc: Release 'chipid' from ioremap()	2023-05-11 23:03:12 +09:00
soundwire	soundwire: qcom: correct setting ignore bit on v1.5.1	2023-05-11 23:03:02 +09:00
spi	spi: cadence-quadspi: use macro DEFINE_SIMPLE_DEV_PM_OPS	2023-05-11 23:03:30 +09:00
spmi	spmi: Add a check for remove callback when removing a SPMI driver	2023-05-11 23:03:31 +09:00
ssb
staging	staging: rtl8192e: Fix W_DISABLE# does not work after stop/start	2023-05-11 23:03:30 +09:00
target	scsi: target: iscsit: Fix TAS handling during conn cleanup	2023-05-11 23:03:19 +09:00
tc
tee	tee: amdtee: fix race condition in amdtee_open_session	2023-03-30 12:49:29 +02:00
thermal	thermal: intel: BXT_PMIC: select REGMAP instead of depending on it	2023-03-11 13:55:32 +01:00
thunderbolt	thunderbolt: Limit USB3 bandwidth of certain Intel USB4 host routers	2023-04-06 12:10:33 +02:00
tty	serial: 8250: Add missing wakeup event reporting	2023-05-11 23:03:30 +09:00
ufs	scsi: ufs: core: Add soft dependency on governor_simpleondemand	2023-03-30 12:49:17 +02:00
uio
usb	usb: mtu3: fix kernel panic at qmu transfer done irq handler	2023-05-11 23:03:30 +09:00
vdpa	vp_vdpa: fix the crash in hot unplug with vp_vdpa	2023-03-22 13:34:03 +01:00
vfio	vfio/type1: restore locked_vm	2023-03-10 09:34:32 +01:00
vhost	vhost-vdpa: free iommu domain after last use during cleanup	2023-03-22 13:33:44 +01:00
video	fbdev: mmp: Fix deferred clk handling in mmphw_probe()	2023-05-11 23:03:31 +09:00
virt	virt/coco/sev-guest: Double-buffer messages	2023-05-11 23:03:10 +09:00
virtio	virtio_ring: don't update event idx on get_buf	2023-05-11 23:03:31 +09:00
vlynq
w1	w1: fix WARNING after calling w1_process()	2023-02-01 08:34:26 +01:00
watchdog	watchdog: sbsa_wdog: Make sure the timeout programming is within the limits	2023-03-11 13:55:24 +01:00
xen	ACPI: processor: Fix evaluating _PDC method when running as Xen dom0	2023-05-11 23:03:11 +09:00
zorro
Kconfig
Makefile