Yannick Vignon
084a1858e2
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 11:38:30 +02:00
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amba: Fix resource leak for drivers without .remove
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binder: add flag to clear buffer on txn complete
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ata: libahci_platform: fix IRQ check
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atm: idt77252: fix null-ptr-dereference
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auxdisplay: ht16k33: Fix refresh rate handling
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PM: runtime: Fix unpaired parent child_count for force_resume
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nbd: Fix NULL pointer in flush_workqueue
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2021-03-04 10:26:29 +01:00
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cpufreq: armada-37xx: Fix determining base CPU frequency
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device-dax/core: Fix memory leak when rmmod dax.ko
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PM / devfreq: Use more accurate returned new_freq as resume_freq
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EDAC/amd64: Fix PCI component registration
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firmware: qcom-scm: Fix QCOM_SCM configuration
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2021-05-14 09:44:25 +02:00
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iommu/amd: Remove performance counter pre-initialization test
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irqchip/gic-v3: Fix OF_BAD_ADDR error handling
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isdn: capi: fix mismatched prototypes
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leds: trigger: fix potential deadlock with libata
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lightnvm: fix memory leak when submit fails
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mailbox: avoid timer start from callback
2020-10-29 09:57:53 +01:00
md: Fix missing unused status line of /proc/mdstat
2021-05-14 09:44:13 +02:00
media: v4l2-ctrls.c: fix race condition in hdl->requests list
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memory: pl353: fix mask of ECC page_size config register
2021-05-14 09:44:19 +02:00
memstick: r592: Fix error return in r592_probe()
2020-12-30 11:51:18 +01:00
scsi: mptfusion: Fix null pointer dereferences in mptscsih_remove()
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mfd: stm32-timers: Avoid clearing auto reload register
2021-05-14 09:44:25 +02:00
kgdb: fix gcc-11 warning on indentation
2021-05-22 11:38:27 +02:00
mmc: sdhci-pci: Add PCI IDs for Intel LKF
2021-05-11 14:04:10 +02:00
mtd: rawnand: gpmi: Fix a double free in gpmi_nand_init
2021-05-14 09:44:20 +02:00
net: stmmac: Do not enable RX FIFO overflow interrupts
2021-05-22 11:38:30 +02:00
nfc: pn533: prevent potential memory corruption
2021-05-14 09:44:27 +02:00
NTB: hw: amd: fix an issue about leak system resources
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libnvdimm/region: Fix nvdimm_has_flush() to handle ND_REGION_ASYNC
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nvme: do not try to reconfigure APST when the controller is not live
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nvmem: core: skip child nodes not matching binding
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Revert "fdt: Properly handle "no-map" field in the memory region"
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opp: Reduce the size of critical section in _opp_table_kref_release()
2020-11-18 19:20:21 +01:00
ACPI / hotplug / PCI: Fix reference count leak in enable_slot()
2021-05-22 11:38:28 +02:00
perf/arm_pmu_platform: Fix error handling
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platform/x86: pmc_atom: Match all Beckhoff Automation baytrail boards with critclk_systems DMI table
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power: supply: s3c_adc_battery: fix possible use-after-free in s3c_adc_bat_remove()
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powercap: restrict energy meter to root access
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powerpc/ps3: use dma_mapping_error()
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pwm: rockchip: rockchip_pwm_probe(): Remove superfluous clk_unprepare()
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rapidio: fix the missed put_device() for rio_mport_add_riodev
2020-10-29 09:57:53 +01:00
RAS/CEC: Correct ce_add_elem()'s returned values
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regulator: bd9571mwv: Fix AVS and DVFS voltage range
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remoteproc: qcom: Fix potential NULL dereference in adsp_init_mmio()
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rpmsg: qcom_glink_native: fix error return code of qcom_glink_rx_data()
2021-05-19 10:08:25 +02:00
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s390/dasd: fix hanging IO request during DASD driver unbind
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scsi: lpfc: Fix illegal memory access on Abort IOCBs
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slimbus: qcom-ngd-ctrl: Avoid sending power requests without QMI
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soc: aspeed: fix a ternary sign expansion bug
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soundwire: stream: fix memory leak in stream config error path
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spi: fsl-lpspi: Fix PM reference leak in lpspi_prepare_xfer_hardware()
2021-05-14 09:44:21 +02:00
spmi: spmi-pmic-arb: Fix hw_irq overflow
2021-03-04 10:26:49 +01:00
media: omap4iss: return error code when omap4iss_get() failed
2021-05-14 09:44:23 +02:00
scsi: target: tcmu: Return from tcmu_handle_completions() if cmd_id not found
2021-05-22 11:38:29 +02:00
tee: optee: do not check memref size on return from Secure World
2021-05-11 14:04:06 +02:00
thermal/core/fair share: Lock the thermal zone while looping over instances
2021-05-19 10:08:32 +02:00
thunderbolt: Fix use-after-free in remove_unplugged_switch()
2020-12-11 13:23:29 +01:00
serial: core: return early on unsupported ioctls
2021-05-14 09:44:22 +02:00
uio: Fix use-after-free in uio_unregister_device()
2020-11-18 19:20:29 +01:00
usb: sl811-hcd: improve misleading indentation
2021-05-22 11:38:27 +02:00
vfio/mdev: Do not allow a mdev_type to have a NULL parent pointer
2021-05-14 09:44:24 +02:00
vhost: Fix vhost_vq_reset()
2021-04-07 14:47:39 +02:00
fbdev: zero-fill colormap in fbcmap.c
2021-05-11 14:04:04 +02:00
virt: vbox: Do not use wait_event_interruptible when called from kernel context
2021-03-04 10:26:10 +01:00
virtio_ring: Fix two use after free bugs
2020-12-30 11:51:29 +01:00
w1: mxc_w1: Fix timeout resolution problem leading to bus error
2020-11-05 11:43:25 +01:00
watchdog: mei_wdt: request stop on unregister
2021-03-04 10:26:47 +01:00
xen/events: fix setting irq affinity
2021-04-16 11:46:39 +02:00
084a1858e2