AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/drivers
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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
..
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acpi ACPI: scan: Fix a memory leak in an error handling path 2021-05-19 10:13:13 +02:00
amba amba: Fix resource leak for drivers without .remove 2021-03-04 11:38:02 +01:00
android binder: add flag to clear buffer on txn complete 2020-12-30 11:54:09 +01:00
ata ata: libahci_platform: fix IRQ check 2021-05-14 09:50:24 +02:00
atm atm: idt77252: fix null-ptr-dereference 2021-03-30 14:31:50 +02:00
auxdisplay auxdisplay: ht16k33: Fix refresh rate handling 2021-03-04 11:38:00 +01:00
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 counter: stm32-timer-cnt: fix ceiling miss-alignment with reload register 2021-03-25 09:04:16 +01:00
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 device-dax: Fix default return code of range_parse() 2021-03-04 11:38:15 +01:00
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 dmabuf: fix use-after-free of dmabuf's file->f_inode 2021-01-12 20:18:24 +01:00
edac EDAC/amd64: Do not load on family 0x15, model 0x13 2021-03-07 12:34:08 +01:00
eisa
extcon extcon: arizona: Fix various races on driver unbind 2021-05-11 14:47:24 +02:00
firewire firewire: nosy: Fix a use-after-free bug in nosy_ioctl() 2021-04-07 15:00:11 +02:00
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 ide/falconide: Fix module unload 2021-03-04 11:38:21 +01:00
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 interconnect: core: fix error return code of icc_link_destroy() 2021-04-16 11:43:19 +02:00
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 leds: trigger: fix potential deadlock with libata 2021-02-03 23:28:41 +01:00
lightnvm lightnvm: fix memory leak when submit fails 2021-01-27 11:55:22 +01:00
macintosh macintosh/adb-iop: Use big-endian autopoll mask 2021-03-04 11:37:42 +01:00
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 opp: Correct debug message in _opp_add_static_v2() 2021-03-04 11:37:27 +01:00
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 powerpc/ps3: use dma_mapping_error() 2020-12-30 11:53:53 +01:00
ptp ptp_qoriq: fix overflow in ptp_qoriq_adjfine() u64 calcalation 2021-04-10 13:36:09 +02:00
pwm pwm: atmel: Fix duty cycle calculation in .get_state() 2021-05-19 10:13:04 +02:00
rapidio
ras RAS/CEC: Correct ce_add_elem()'s returned values 2021-04-14 08:42:12 +02:00
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 spmi: spmi-pmic-arb: Fix hw_irq overflow 2021-03-04 11:38:40 +01:00
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 thunderbolt: Fix off by one in tb_port_find_retimer() 2021-04-14 08:42:03 +02:00
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 virtio_ring: Fix two use after free bugs 2020-12-30 11:54:00 +01:00
visorbus
vlynq
vme
w1 w1: w1_therm: Fix conversion result for negative temperatures 2021-03-04 11:37:18 +01:00
watchdog watchdog: mei_wdt: request stop on unregister 2021-03-04 11:38:36 +01:00
xen xen/gntdev: fix gntdev_mmap() error exit path 2021-05-19 10:13:16 +02:00
zorro
Kconfig
Makefile