Yannick Vignon 0473032821 net: stmmac: Do not enable RX FIFO overflow interrupts ... [ Upstream commit 8a7cb245cf28cb3e541e0d6c8624b95d079e155b ] The RX FIFO overflows when the system is not able to process all received packets and they start accumulating (first in the DMA queue in memory, then in the FIFO). An interrupt is then raised for each overflowing packet and handled in stmmac_interrupt(). This is counter-productive, since it brings the system (or more likely, one CPU core) to its knees to process the FIFO overflow interrupts. stmmac_interrupt() handles overflow interrupts by writing the rx tail ptr into the corresponding hardware register (according to the MAC spec, this has the effect of restarting the MAC DMA). However, without freeing any rx descriptors, the DMA stops right away, and another overflow interrupt is raised as the FIFO overflows again. Since the DMA is already restarted at the end of stmmac_rx_refill() after freeing descriptors, disabling FIFO overflow interrupts and the corresponding handling code has no side effect, and eliminates the interrupt storm when the RX FIFO overflows. Signed-off-by: Yannick Vignon <yannick.vignon@nxp.com> Link: https://lore.kernel.org/r/20210506143312.20784-1-yannick.vignon@oss.nxp.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-05-22 11:40:55 +02:00
..
accessibility
acpi	ACPI: scan: Fix a memory leak in an error handling path	2021-05-19 10:13:13 +02:00
amba
android
ata	ata: libahci_platform: fix IRQ check	2021-05-14 09:50:24 +02:00
atm
auxdisplay
base	PM: runtime: Fix unpaired parent child_count for force_resume	2021-05-19 10:12:51 +02:00
bcma
block	nbd: Fix NULL pointer in flush_workqueue	2021-05-19 10:13:14 +02:00
bluetooth	Bluetooth: btusb: Enable quirk boolean flag for Mediatek Chip.	2021-05-19 10:12:54 +02:00
bus	bus: qcom: Put child node before return	2021-05-14 09:50:13 +02:00
cdrom
char	tpm, tpm_tis: Reserve locality in tpm_tis_resume()	2021-05-19 10:12:51 +02:00
clk	clk: exynos7: Mark aclk_fsys1_200 as critical	2021-05-19 10:13:19 +02:00
clocksource	clocksource/drivers/timer-ti-dm: Handle dra7 timer wrap errata i940	2021-05-19 10:13:18 +02:00
connector
counter
cpufreq	cpufreq: intel_pstate: Use HWP if enabled by platform firmware	2021-05-19 10:12:51 +02:00
cpuidle	cpuidle: Fix ARM_QCOM_SPM_CPUIDLE configuration	2021-05-14 09:50:16 +02:00
crypto	crypto: ccp: Free SEV device if SEV init fails	2021-05-19 10:12:58 +02:00
dax
dca
devfreq	PM / devfreq: Use more accurate returned new_freq as resume_freq	2021-05-14 09:50:15 +02:00
dio
dma	dmaengine: dw-edma: Fix crash on loading/unloading driver	2021-05-22 11:40:52 +02:00
dma-buf
edac
eisa
extcon	extcon: arizona: Fix various races on driver unbind	2021-05-11 14:47:24 +02:00
firewire
firmware	firmware: qcom-scm: Fix QCOM_SCM configuration	2021-05-14 09:50:19 +02:00
fpga	fpga: fpga-mgr: xilinx-spi: fix error messages on -EPROBE_DEFER	2021-05-14 09:50:06 +02:00
fsi
gnss
gpio	gpiolib: acpi: Add quirk to ignore EC wakeups on Dell Venue 10 Pro 5055	2021-05-22 11:40:54 +02:00
gpu	drm/amd/display: Fix two cursor duplication when using overlay	2021-05-22 11:40:54 +02:00
greybus
hid	HID: lenovo: Map mic-mute button to KEY_F20 instead of KEY_MICMUTE	2021-05-14 09:50:33 +02:00
hsi	HSI: core: fix resource leaks in hsi_add_client_from_dt()	2021-05-14 09:50:28 +02:00
hv	Drivers: hv: vmbus: Increase wait time for VMbus unload	2021-05-14 09:50:21 +02:00
hwmon	hwmon: (occ) Fix poll rate limiting	2021-05-19 10:13:13 +02:00
hwspinlock
hwtracing	coresight: Do not scan for graph if none is present	2021-05-19 10:12:55 +02:00
i2c	i2c: mediatek: Fix send master code at more than 1MHz	2021-05-19 10:13:19 +02:00
i3c	Revert "i3c master: fix missing destroy_workqueue() on error in i3c_master_register"	2021-05-14 09:50:05 +02:00
ide
idle
iio	iio: tsl2583: Fix division by a zero lux_val	2021-05-19 10:13:16 +02:00
infiniband	IB/hfi1: Correct oversized ring allocation	2021-05-19 10:12:55 +02:00
input	Input: silead - add workaround for x86 BIOS-es which bring the chip up in a stuck state	2021-05-22 11:40:52 +02:00
interconnect
iommu	iommu/vt-d: Remove WO permissions on second-level paging entries	2021-05-19 10:13:17 +02:00
ipack
irqchip	irqchip/gic-v3: Fix OF_BAD_ADDR error handling	2021-05-14 09:50:15 +02:00
isdn	isdn: capi: fix mismatched prototypes	2021-05-22 11:40:52 +02:00
leds
lightnvm
macintosh
mailbox	mailbox: sprd: Introduce refcnt when clients requests/free channels	2021-05-14 09:50:27 +02:00
mcb
md	md: Fix missing unused status line of /proc/mdstat	2021-05-14 09:49:59 +02:00
media	media: v4l2-ctrls.c: fix race condition in hdl->requests list	2021-05-14 09:50:25 +02:00
memory	memory: samsung: exynos5422-dmc: handle clk_set_parent() failure	2021-05-14 09:50:19 +02:00
memstick
message
mfd	mfd: stm32-timers: Avoid clearing auto reload register	2021-05-14 09:50:27 +02:00
misc	kgdb: fix gcc-11 warning on indentation	2021-05-22 11:40:51 +02:00
mmc	mmc: sdhci-brcmstb: Remove CQE quirk	2021-05-11 14:47:26 +02:00
most
mtd	mtd: rawnand: gpmi: Fix a double free in gpmi_nand_init	2021-05-14 09:50:15 +02:00
mux
net	net: stmmac: Do not enable RX FIFO overflow interrupts	2021-05-22 11:40:55 +02:00
nfc	nfc: pn533: prevent potential memory corruption	2021-05-14 09:50:32 +02:00
ntb
nubus
nvdimm	libnvdimm/region: Fix nvdimm_has_flush() to handle ND_REGION_ASYNC	2021-04-21 13:00:55 +02:00
nvme	nvmet: remove unsupported command noise	2021-05-22 11:40:54 +02:00
nvmem	drivers: nvmem: Fix voltage settings for QTI qfprom-efuse	2021-05-14 09:50:14 +02:00
of	of: overlay: fix for_each_child.cocci warnings	2021-05-14 09:50:24 +02:00
opp
oprofile
parisc
parport
pci	PCI: tegra: Fix runtime PM imbalance in pex_ep_event_pex_rst_deassert()	2021-05-22 11:40:52 +02:00
pcmcia
perf	perf/arm_pmu_platform: Fix error handling	2021-05-11 14:47:19 +02:00
phy	phy: marvell: ARMADA375_USBCLUSTER_PHY should not default to y, unconditionally	2021-05-14 09:50:13 +02:00
pinctrl	pinctrl: samsung: use 'int' for register masks in Exynos	2021-05-19 10:12:55 +02:00
platform	platform/chrome: cros_ec_typec: Add DP mode check	2021-05-22 11:40:53 +02:00
pnp
power	power: supply: bq25980: Move props from battery node	2021-05-14 09:50:25 +02:00
powercap
pps
ps3
ptp
pwm	pwm: atmel: Fix duty cycle calculation in .get_state()	2021-05-19 10:13:04 +02:00
rapidio
ras
regulator	regulator: bd9576: Fix return from bd957x_probe()	2021-05-14 09:50:10 +02:00
remoteproc	remoteproc: qcom_q6v5_mss: Validate p_filesz in ELF loader	2021-05-19 10:13:01 +02:00
reset
rpmsg	rpmsg: qcom_glink_native: fix error return code of qcom_glink_rx_data()	2021-05-19 10:13:02 +02:00
rtc	rtc: ds1307: Fix wday settings for rx8130	2021-05-19 10:13:05 +02:00
s390	s390/zcrypt: fix zcard and zqueue hot-unplug memleak	2021-05-11 14:47:11 +02:00
sbus
scsi	scsi: lpfc: Fix illegal memory access on Abort IOCBs	2021-05-22 11:40:53 +02:00
sfi
sh
siox
slimbus
soc	soc: aspeed: fix a ternary sign expansion bug	2021-05-14 09:50:21 +02:00
soundwire	soundwire: stream: fix memory leak in stream config error path	2021-05-14 09:50:14 +02:00
spi	spi: spi-zynqmp-gqspi: return -ENOMEM if dma_map_single fails	2021-05-14 09:50:20 +02:00
spmi
ssb
staging	media: rkvdec: Remove of_match_ptr()	2021-05-19 10:13:19 +02:00
target	scsi: target: tcmu: Return from tcmu_handle_completions() if cmd_id not found	2021-05-22 11:40:54 +02:00
tc
tee	tee: optee: do not check memref size on return from Secure World	2021-05-11 14:47:18 +02:00
thermal	thermal/drivers/tsens: Fix missing put_device error	2021-05-19 10:13:03 +02:00
thunderbolt
tty	serial: omap: fix rs485 half-duplex filtering	2021-05-14 09:50:21 +02:00
uio
usb	usb: sl811-hcd: improve misleading indentation	2021-05-22 11:40:51 +02:00
vdpa	vdpa/mlx5: Set err = -ENOMEM in case dma_map_sg_attrs fails	2021-04-28 13:39:59 +02:00
vfio	vfio/mdev: Do not allow a mdev_type to have a NULL parent pointer	2021-05-14 09:50:26 +02:00
vhost	vhost-vdpa: fix vm_flags for virtqueue doorbell mapping	2021-05-11 14:47:12 +02:00
video	backlight: qcom-wled: Fix FSC update issue for WLED5	2021-05-11 14:47:25 +02:00
virt	nitro_enclaves: Fix stale file descriptors on failed usercopy	2021-05-11 14:47:11 +02:00
virtio
visorbus
vlynq
vme
w1
watchdog
xen	xen/gntdev: fix gntdev_mmap() error exit path	2021-05-19 10:13:16 +02:00
zorro
Kconfig
Makefile