Tam Nguyen e8183fa10c i2c: designware: Disable TX_EMPTY irq while waiting for block length byte ... During SMBus block data read process, we have seen high interrupt rate because of TX_EMPTY irq status while waiting for block length byte (the first data byte after the address phase). The interrupt handler does not do anything because the internal state is kept as STATUS_WRITE_IN_PROGRESS. Hence, we should disable TX_EMPTY IRQ until I2C DesignWare receives first data byte from I2C device, then re-enable it to resume SMBus transaction. It takes 0.789 ms for host to receive data length from slave. Without the patch, i2c_dw_isr() is called 99 times by TX_EMPTY interrupt. And it is none after applying the patch. Cc: stable@vger.kernel.org Co-developed-by: Chuong Tran <chuong@os.amperecomputing.com> Signed-off-by: Chuong Tran <chuong@os.amperecomputing.com> Signed-off-by: Tam Nguyen <tamnguyenchi@os.amperecomputing.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Reviewed-by: Serge Semin <fancer.lancer@gmail.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>		2023-11-08 10:19:48 +01:00
..
accel	As usual, lots of singleton and doubleton patches all over the tree and	2023-11-02 20:53:31 -10:00
accessibility
acpi	cxl for v6.7	2023-11-04 16:20:36 -10:00
amba
android	Char/Misc and other driver changes for 6.7-rc1	2023-11-03 14:51:08 -10:00
ata	ATA changes for 6.7-rc1	2023-11-01 12:50:12 -10:00
atm	pci-v6.7-changes	2023-11-02 14:05:18 -10:00
auxdisplay
base	regmap: Fix for v6.7	2023-11-07 16:56:10 -08:00
bcma
block	vhost,virtio,vdpa: features, fixes, cleanups	2023-11-05 09:02:32 -10:00
bluetooth	Bluetooth: btmtksdio: enable bluetooth wakeup in system suspend	2023-10-23 11:04:51 -07:00
bus	SoC driver updates for 6.7	2023-11-01 14:46:51 -10:00
cache	riscv: RISCV_NONSTANDARD_CACHE_OPS shouldn't depend on RISCV_DMA_NONCOHERENT	2023-10-26 09:42:37 +02:00
cdrom
cdx	Char/Misc and other driver changes for 6.7-rc1	2023-11-03 14:51:08 -10:00
char	Char/Misc and other driver changes for 6.7-rc1	2023-11-03 14:51:08 -10:00
clk	SoC driver updates for 6.7	2023-11-01 14:46:51 -10:00
clocksource	arm64 updates for 6.7:	2023-11-01 09:34:55 -10:00
comedi
connector	Fix NULL pointer dereference in cn_filter()	2023-10-24 10:53:45 +02:00
counter
cpufreq	Merge branch 'pm-cpufreq'	2023-11-07 20:45:12 +01:00
cpuidle
crypto	crypto: talitos - stop using crypto_ahash::init	2023-10-27 18:04:29 +08:00
cxl	cxl/pci: Change CXL AER support check to use native AER	2023-11-02 14:09:01 -07:00
dax	Many singleton patches against the MM code. The patch series which are	2023-11-02 19:38:47 -10:00
dca
devfreq
dio
dma	dmaengine updates for v6.7	2023-11-03 18:56:51 -10:00
dma-buf	As usual, lots of singleton and doubleton patches all over the tree and	2023-11-02 20:53:31 -10:00
dpll
edac	hardening updates for v6.7-rc1	2023-10-30 19:09:55 -10:00
eisa
extcon
firewire	firewire: Annotate struct fw_node with __counted_by	2023-11-05 21:15:17 +09:00
firmware	TTY/Serial changes for 6.7-rc1	2023-11-03 15:44:25 -10:00
fpga	Char/Misc and other driver changes for 6.7-rc1	2023-11-03 14:51:08 -10:00
fsi
gnss
gpio	pinctrl: tegra: drop the wrapper around pinctrl_gpio_request()	2023-11-04 10:23:23 +01:00
gpu	drm next and fixes for 6.7-rc1	2023-11-07 17:10:02 -08:00
greybus	greybus: Add BeaglePlay Linux Driver	2023-10-27 13:19:04 +02:00
hid	Char/Misc and other driver changes for 6.7-rc1	2023-11-03 14:51:08 -10:00
hsi
hte	hte: Changes for v6.7-rc1	2023-10-31 18:32:51 -10:00
hv	TTY/Serial changes for 6.7-rc1	2023-11-03 15:44:25 -10:00
hwmon	hwmon updates for v6.7-rc1	2023-10-31 17:44:17 -10:00
hwspinlock
hwtracing
i2c	i2c: designware: Disable TX_EMPTY irq while waiting for block length byte	2023-11-08 10:19:48 +01:00
i3c	I3C for 6.7	2023-11-04 16:25:36 -10:00
idle
iio	Char/Misc and other driver changes for 6.7-rc1	2023-11-03 14:51:08 -10:00
infiniband	RDMA for v6.7	2023-11-02 15:20:30 -10:00
input	asm-generic updates for v6.7	2023-11-01 15:28:33 -10:00
interconnect
iommu	iommufd for 6.7	2023-11-01 16:44:56 -10:00
ipack
irqchip	arm64 updates for 6.7:	2023-11-01 09:34:55 -10:00
isdn	hardening updates for v6.7-rc1	2023-10-30 19:09:55 -10:00
leds	- Core Frameworks	2023-11-02 14:53:19 -10:00
macintosh	powerpc updates for 6.7	2023-11-03 10:07:39 -10:00
mailbox	Moving repo	2023-11-05 18:45:32 -08:00
mcb
md	Many singleton patches against the MM code. The patch series which are	2023-11-02 19:38:47 -10:00
media	media updates for v6.7-rc1	2023-11-06 15:06:06 -08:00
memory
memstick
message	scsi: message: fusion: Initialize return value in mptfc_bus_reset()	2023-10-24 22:36:39 -04:00
mfd	- Core Frameworks	2023-11-02 14:40:51 -10:00
misc	I2C has largely driver updates for 6.7., i.e. feature additions (like	2023-11-05 08:41:14 -10:00
mmc	mmc: Merge branch fixes into next	2023-10-27 12:00:35 +02:00
most
mtd	This pull request contains updates for UBI and UBIFS	2023-11-05 08:28:32 -10:00
mux
net	As usual, lots of singleton and doubleton patches all over the tree and	2023-11-02 20:53:31 -10:00
nfc
ntb
nubus
nvdimm
nvme	for-6.7/block-2023-10-30	2023-11-01 12:30:07 -10:00
nvmem	Char/Misc and other driver changes for 6.7-rc1	2023-11-03 14:51:08 -10:00
of	Devicetree updates for 6.7:	2023-10-31 18:50:13 -10:00
opp
parisc	parisc/power: Trivial whitespace cleanups and license update	2023-10-30 14:54:40 +01:00
parport	Char/Misc and other driver changes for 6.7-rc1	2023-11-03 14:51:08 -10:00
pci	cxl for v6.7	2023-11-04 16:20:36 -10:00
pcmcia	PCMCIA odd cleanups and fixes for v6.7-rc1	2023-11-07 16:40:42 -08:00
peci
perf	sysctl-6.7-rc1	2023-11-01 20:51:41 -10:00
phy	phy-for-6.6	2023-11-03 19:06:12 -10:00
pinctrl	pinctrl: nuvoton: npcm8xx: drop wrappers around pinctrl_gpio_request/free()	2023-11-04 10:23:23 +01:00
platform	Major microcode loader restructuring, cleanup and improvements by Thomas	2023-11-04 08:46:37 -10:00
pmdomain	SoC driver updates for 6.7	2023-11-01 14:46:51 -10:00
pnp
power	USB/Thunderbolt changes for 6.7-rc1	2023-11-03 16:00:42 -10:00
powercap	powercap: intel_rapl: Downgrade BIOS locked limits pr_warn() to pr_debug()	2023-10-24 22:07:07 +02:00
pps
ps3
ptp
pwm
rapidio
ras
regulator	regulator: Merge up pending fix	2023-10-30 13:14:27 +00:00
remoteproc
reset	reset: Annotate struct reset_control_array with __counted_by	2023-10-24 14:10:04 -07:00
rpmsg	rpmsg: virtio: Replace deprecated strncpy with strscpy/_pad	2023-10-23 13:11:07 -06:00
rtc	RTC for 6.7	2023-11-05 18:49:40 -08:00
s390	s390 updates for the 6.7 merge window	2023-11-03 10:17:22 -10:00
sbus
scsi	As usual, lots of singleton and doubleton patches all over the tree and	2023-11-02 20:53:31 -10:00
sh	sh: Remove superhyway bus support	2023-10-25 16:50:11 +02:00
siox
slimbus
soc	powerpc updates for 6.7	2023-11-03 10:07:39 -10:00
soundwire	soundwire updates for 6.7	2023-11-03 19:10:41 -10:00
spi	USB/Thunderbolt changes for 6.7-rc1	2023-11-03 16:00:42 -10:00
spmi	spmi: rename spmi device lookup helper	2023-11-01 10:02:18 +00:00
ssb
staging	media updates for v6.7-rc1	2023-11-06 15:06:06 -08:00
target	SCSI misc on 20231102	2023-11-02 15:13:50 -10:00
tc
tee
thermal	Thermal control updates for 6.7-rc1	2023-10-31 15:28:37 -10:00
thunderbolt	USB/Thunderbolt changes for 6.7-rc1	2023-11-03 16:00:42 -10:00
tty	TTY/Serial changes for 6.7-rc1	2023-11-03 15:44:25 -10:00
ufs	SCSI misc on 20231102	2023-11-02 15:13:50 -10:00
uio
usb	USB/Thunderbolt changes for 6.7-rc1	2023-11-03 16:00:42 -10:00
vdpa	vdpa_sim: implement .reset_map support	2023-11-01 09:20:00 -04:00
vfio	Char/Misc and other driver changes for 6.7-rc1	2023-11-03 14:51:08 -10:00
vhost	vhost,virtio,vdpa: features, fixes, cleanups	2023-11-05 09:02:32 -10:00
video	TTY/Serial changes for 6.7-rc1	2023-11-03 15:44:25 -10:00
virt	configfs-tsm for v6.7	2023-11-04 15:58:13 -10:00
virtio	vhost,virtio,vdpa: features, fixes, cleanups	2023-11-05 09:02:32 -10:00
vlynq
w1
watchdog
xen	Many singleton patches against the MM code. The patch series which are	2023-11-02 19:38:47 -10:00
zorro
Kconfig	- Move Kconfig files into the pmdomain subsystem	2023-11-01 13:09:46 -10:00
Makefile