Nicolas Chauvet 4913f71e64 PCI: tegra: Revert tegra124 raw_violation_fixup ... commit e7b856dfce upstream. As reported in https://bugzilla.kernel.org/206217 , raw_violation_fixup is causing more harm than good in some common use-cases. This patch is a partial revert of commit: 191cd6fb5d ("PCI: tegra: Add SW fixup for RAW violations") and fixes the following regression since then. * Description: When both the NIC and MMC are used one can see the following message: NETDEV WATCHDOG: enp1s0 (r8169): transmit queue 0 timed out and pcieport 0000:00:02.0: AER: Uncorrected (Non-Fatal) error received: 0000:01:00.0 r8169 0000:01:00.0: AER: PCIe Bus Error: severity=Uncorrected (Non-Fatal), type=Transaction Layer, (Requester ID) r8169 0000:01:00.0: AER: device [10ec:8168] error status/mask=00004000/00400000 r8169 0000:01:00.0: AER: [14] CmpltTO (First) r8169 0000:01:00.0: AER: can't recover (no error_detected callback) pcieport 0000:00:02.0: AER: device recovery failed After that, the ethernet NIC is not functional anymore even after reloading the r8169 module. After a reboot, this is reproducible by copying a large file over the NIC to the MMC. For some reason this is not reproducible when files are copied to a tmpfs. * Little background on the fixup, by Manikanta Maddireddy: "In the internal testing with dGPU on Tegra124, CmplTO is reported by dGPU. This happened because FIFO queue in AFI(AXI to PCIe) module get full by upstream posted writes. Back to back upstream writes interleaved with infrequent reads, triggers RAW violation and CmpltTO. This is fixed by reducing the posted write credits and by changing updateFC timer frequency. These settings are fixed after stress test. In the current case, RTL NIC is also reporting CmplTO. These settings seems to be aggravating the issue instead of fixing it." Link: https://lore.kernel.org/r/20200718100710.15398-1-kwizart@gmail.com Fixes: 191cd6fb5d ("PCI: tegra: Add SW fixup for RAW violations") Signed-off-by: Nicolas Chauvet <kwizart@gmail.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Manikanta Maddireddy <mmaddireddy@nvidia.com> Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-08-11 15:33:39 +02:00
..
dwc	PCI: amlogic: meson: Don't use FAST_LINK_MODE to set up link	2020-06-24 17:50:31 +02:00
Kconfig	…
Makefile	…
pci-aardvark.c	PCI: aardvark: Don't blindly enable ASPM L0s and don't write to read-only register	2020-06-24 17:50:15 +02:00
pci-ftpci100.c	…
pci-host-common.c	…
pci-host-generic.c	…
pci-hyperv-intf.c	…
pci-hyperv.c	pci-v5.4-changes	2019-09-23 19:16:01 -07:00
pci-mvebu.c	…
pci-rcar-gen2.c	…
pci-tegra.c	PCI: tegra: Revert tegra124 raw_violation_fixup	2020-08-11 15:33:39 +02:00
pci-thunder-ecam.c	…
pci-thunder-pem.c	…
pci-v3-semi.c	PCI: v3-semi: Fix a memory leak in v3_pci_probe() error handling paths	2020-06-24 17:50:24 +02:00
pci-versatile.c	…
pci-xgene-msi.c	…
pci-xgene.c	…
pcie-altera-msi.c	…
pcie-altera.c	…
pcie-cadence-ep.c	…
pcie-cadence-host.c	…
pcie-cadence.c	…
pcie-cadence.h	…
pcie-iproc-bcma.c	…
pcie-iproc-msi.c	…
pcie-iproc-platform.c	PCI: iproc: Propagate errors for optional PHYs	2019-09-04 15:44:05 +01:00
pcie-iproc.c	PCI: iproc: Apply quirk_paxc_bridge() for module as well as built-in	2020-02-24 08:36:35 +01:00
pcie-iproc.h	…
pcie-mediatek.c	Merge branch 'pci/trivial'	2019-09-23 16:10:31 -05:00
pcie-mobiveil.c	PCI: mobiveil: Fix csr_read()/write() build issue	2020-01-26 10:01:04 +01:00
pcie-rcar.c	PCI: rcar: Fix incorrect programming of OB windows	2020-06-24 17:50:24 +02:00
pcie-rockchip-ep.c	…
pcie-rockchip-host.c	PCI: rockchip: Propagate errors for optional regulators	2019-09-04 15:37:47 +01:00
pcie-rockchip.c	…
pcie-rockchip.h	…
pcie-tango.c	…
pcie-xilinx-nwl.c	…
pcie-xilinx.c	…
vmd.c	irqdomain/treewide: Keep firmware node unconditionally allocated	2020-07-29 10:18:28 +02:00