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6333a48506
linux/drivers
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Erwan Le Ray 6333a48506 serial: stm32: push DMA RX data before suspending 
Data may be stored in DMA RX buffer, when suspending. The data needs
to be pushed to the upper layer. We can't rely on the timeout IRQ (RTOR)
that can't be triggered into low power state. So safely clear DMA request
(DMAR), force the DMA reception routines to push RX buffer content, before
disabling RX DMA. This way, handover to pio mode is safe.
Only call tty_flip_buffer_push() when there is RX data to handle.

Move the locking outside of stm32_usart_receive_chars() to prevent a race
condition, when disabling DMA request upon suspend / pm_runtime_suspend.
Data may be received under IRQ and pushed before
stm32_usart_receive_chars() has pushed older data from DMA rx_buf upon
suspend.
The sequence in suspend routine needs proper locking to avoid this.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Signed-off-by: Erwan Le Ray <erwan.leray@foss.st.com>
Link: https://lore.kernel.org/r/20211025134229.8456-4-erwan.leray@foss.st.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-10-26 19:18:47 +02:00
..
accessibility
acpi ACPI fix for 5.15-rc6 2021-10-16 08:45:46 -07:00
amba
android binder: make sure fd closes complete 2021-09-14 09:02:13 +02:00
ata ata: ahci_platform: fix null-ptr-deref in ahci_platform_enable_regulators() 2021-10-14 12:22:47 +09:00
atm
auxdisplay
base Driver core fixes for 5.15-rc6 2021-10-17 17:17:28 -10:00
bcma Driver core update for 5.15-rc1 2021-09-01 08:44:42 -07:00
block block-5.15-2021-10-17 2021-10-17 19:25:20 -10:00
bluetooth tty: remove file from n_tty_ioctl_helper 2021-09-22 16:59:13 +02:00
bus Driver core fixes for 5.15-rc6 2021-10-17 17:17:28 -10:00
cdrom
char Revert "virtio-console: remove unnecessary kmemdup()" 2021-10-26 08:45:53 +02:00
clk clk: qcom: add select QCOM_GDSC for SM6350 2021-10-13 11:44:42 -07:00
clocksource - converted Pistachio platform to use MIPS generic kernel 2021-09-03 11:11:54 -07:00
comedi comedi: Fix memory leak in compat_insnlist() 2021-09-21 17:53:54 +02:00
connector
counter
cpufreq Power management fixes for 5.15-rc2 2021-09-17 12:05:04 -07:00
cpuidle - Core Frameworks 2021-09-07 12:38:59 -07:00
crypto crypto: ccp - fix resource leaks in ccp_run_aes_gcm_cmd() 2021-09-24 15:58:41 +08:00
cxl cxl for v5.15 2021-09-09 11:48:27 -07:00
dax libnvdimm for v5.15 2021-09-09 11:39:57 -07:00
dca
devfreq devfreq: use HZ macros 2021-09-08 11:50:26 -07:00
dio
dma dmaengine updates for v5.15-rc1 2021-09-09 11:07:47 -07:00
dma-buf dma-buf: DMABUF_SYSFS_STATS should depend on DMA_SHARED_BUFFER 2021-09-07 12:42:21 +05:30
edac EDAC/armada-xp: Fix output of uncorrectable error counter 2021-10-14 11:46:03 +02:00
eisa
extcon
firewire FireWire (IEEE 1394) subsystem updates: 2021-09-11 09:47:33 -07:00
firmware EFI fixes for v5.15 2021-10-17 17:30:49 -10:00
fpga fpga: ice40-spi: Add SPI device ID table 2021-09-27 14:00:41 -07:00
fsi
gnss
gpio gpio: mockup: Convert to use software nodes 2021-10-06 13:04:04 +02:00
gpu drm/panel: olimex-lcd-olinuxino: select CRC32 2021-10-15 15:05:13 +10:00
greybus
hid HID: amd_sfh: Fix potential NULL pointer dereference 2021-09-27 10:00:43 +02:00
hsi
hv hyperv-fixes for 5.15-rc2 2021-09-15 17:18:56 -07:00
hwmon hwmon: (w83793) Fix NULL pointer dereference by removing unnecessary structure field 2021-10-02 05:14:11 -07:00
hwspinlock
hwtracing coresight: syscfg: Fix compiler warning 2021-09-14 09:03:16 +02:00
i2c i2c: mlxcpld: Modify register setting for 400KHz frequency 2021-10-04 21:56:20 +02:00
i3c
idle
iio Staging/IIO driver fixes for 5.15-rc6 2021-10-17 17:10:00 -10:00
infiniband RDMA/hns: Add the check of the CQE size of the user space 2021-09-27 14:49:49 -03:00
input Merge 5.15-rc6 into tty-next 2021-10-18 09:38:54 +02:00
interconnect interconnect: qcom: sdm660: Add missing a2noc qos clocks 2021-09-13 15:49:55 +03:00
iommu iommu/arm: fix ARM_SMMU_QCOM compilation 2021-10-13 21:28:44 +02:00
ipack ipack: ipoctal: fix module reference leak 2021-09-27 17:38:49 +02:00
irqchip irqchip/gic: Work around broken Renesas integration 2021-09-22 14:44:25 +01:00
isdn isdn: mISDN: Fix sleeping function called from invalid context 2021-10-09 13:42:51 +01:00
leds leds: pca955x: Switch to i2c probe_new 2021-08-20 11:00:08 +02:00
macintosh memblock: introduce saner 'memblock_free_ptr()' interface 2021-09-14 13:23:22 -07:00
mailbox mailbox: cmdq: add multi-gce clocks support for mt8195 2021-08-31 22:57:45 -05:00
mcb mcb: fix error handling in mcb_alloc_bus() 2021-09-14 11:22:26 +02:00
md dm: fix mempool NULL pointer race when completing IO 2021-10-12 13:54:10 -04:00
media asm-generic: build fixes for v5.15 2021-10-08 11:57:54 -07:00
memory
memstick Driver core update for 5.15-rc1 2021-09-01 08:44:42 -07:00
message
mfd - Core Frameworks 2021-09-07 12:38:59 -07:00
misc eeprom: 93xx46: fix MODULE_DEVICE_TABLE 2021-10-15 10:54:02 +02:00
mmc asm-generic: build fixes for v5.15 2021-10-08 11:57:54 -07:00
most
mtd mtd: rawnand: qcom: Update code word value for raw read 2021-09-14 19:36:00 +02:00
mux
net Merge 5.15-rc6 into tty-next 2021-10-18 09:38:54 +02:00
nfc nfc: st-nci: Add SPI ID matching DT compatible 2021-09-23 12:53:06 +01:00
ntb Bug fixes and clean-ups for Linux v5.15 2021-09-07 13:05:02 -07:00
nubus
nvdimm nvdimm/pmem: fix creating the dax group 2021-09-27 11:40:43 -07:00
nvme nvme fixes for Linux 5.15: 2021-10-14 09:07:14 -06:00
nvmem nvmem: Fix shift-out-of-bound (UBSAN) with byte size cells 2021-10-13 15:09:58 +02:00
of fbdev: simplefb: fix Kconfig dependencies 2021-10-06 11:12:28 +02:00
opp Merge branches 'pm-pci', 'pm-sleep', 'pm-domains' and 'powercap' 2021-08-30 19:25:42 +02:00
parisc parisc: Move pci_dev_is_behind_card_dino to where it is used 2021-09-09 12:44:31 +02:00
parport parisc architecture updates for kernel 5.15: 2021-09-02 13:16:00 -07:00
pci pci-v5.15-fixes-2 2021-10-16 09:00:46 -07:00
pcmcia
perf KVM: arm64: Fix PMU probe ordering 2021-09-20 12:43:34 +01:00
phy Merge branch 'akpm' (patches from Andrew) 2021-09-08 12:55:35 -07:00
pinctrl asm-generic: build fixes for v5.15 2021-10-08 11:57:54 -07:00
platform platform/x86: int1092: Fix non sequential device mode handling 2021-10-11 16:39:25 +02:00
pnp
power power supply and reset changes for the v5.15 series 2021-08-30 11:47:32 -07:00
powercap powercap: Add Power Limit4 support for Alder Lake SoC 2021-08-25 20:12:16 +02:00
pps
ps3
ptp Networking fixes for 5.15-rc5, including fixes from xfrm, bpf, 2021-10-07 09:50:31 -07:00
pwm pwm: mtk-disp: Implement atomic API .get_state() 2021-09-02 22:27:46 +02:00
rapidio
ras
regulator regulator: max14577: Revert "regulator: max14577: Add proper module aliases strings" 2021-09-17 13:16:38 +01:00
remoteproc
reset ARM: SoC drivers for 5.15 2021-09-01 15:25:28 -07:00
rpmsg rpmsg: core: add API to get MTU 2021-10-21 12:35:35 +02:00
rtc rtc: cmos: Disable irq around direct invocation of cmos_interrupt() 2021-09-14 10:20:19 +02:00
s390 s390 updates for 5.15-rc4 2021-10-01 14:45:23 -07:00
sbus
scsi scsi: iscsi: Fix iscsi_task use after free 2021-10-04 23:40:11 -04:00
sh
siox
slimbus Driver core update for 5.15-rc1 2021-09-01 08:44:42 -07:00
soc Driver core fixes for 5.15-rc6 2021-10-17 17:17:28 -10:00
soundwire sound updates for 5.15-rc1 2021-09-01 10:29:29 -07:00
spi spi-mux: Fix false-positive lockdep splats 2021-10-14 13:32:19 +01:00
spmi
ssb
staging Staging/IIO driver fixes for 5.15-rc6 2021-10-17 17:10:00 -10:00
target scsi: target: Fix spelling mistake "CONFLIFT" -> "CONFLICT" 2021-09-22 00:17:29 -04:00
tc
tee tee: optee: Fix missing devices unregister during optee_remove 2021-10-12 13:24:39 +02:00
thermal thermal/drivers/tsens: Fix wrong check for tzd in irq handlers 2021-09-21 15:17:11 +02:00
thunderbolt thunderbolt: build kunit tests without structleak plugin 2021-10-06 17:53:49 -06:00
tty serial: stm32: push DMA RX data before suspending 2021-10-26 19:18:47 +02:00
uio
usb USB-serial fixes for 5.15-rc6 2021-10-15 15:04:02 +02:00
vdpa vdpa/mlx5: Avoid executing set_vq_ready() if device is reset 2021-09-14 18:10:43 -04:00
vfio vfio/pci: add missing identifier name in argument of function prototype 2021-09-23 14:12:36 -06:00
vhost virtio,vdpa: fixes 2021-10-17 18:17:19 -10:00
video video: fbdev: gbefb: Only instantiate device when built for IP32 2021-10-06 11:12:28 +02:00
virt
virtio virtio: write back F_VERSION_1 before validate 2021-10-13 08:35:36 -04:00
visorbus
vlynq
vme
w1
watchdog watchdog/sb_watchdog: fix compilation problem due to COMPILE_TEST 2021-09-27 11:57:19 -07:00
xen xen: branch for v5.15-rc5 2021-10-08 12:55:23 -07:00
zorro
Kconfig firmware: include drivers/firmware/Kconfig unconditionally 2021-10-07 16:51:26 +02:00
Makefile remove the lightnvm subsystem 2021-08-14 15:54:09 -06:00