5.4-stable review patch. If anyone has any objections, please let me know.
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From: Wu Zongyong wuzongyong@linux.alibaba.com
[ Upstream commit d5af729dc2071273f14cbb94abbc60608142fd83 ]
NVIDIA T4 GPUs do not work with SBR. This problem is found when the T4 card is direct attached to a Root Port only. Avoid bus reset by marking T4 GPUs PCI_DEV_FLAGS_NO_BUS_RESET.
Fixes: 4c207e7121fa ("PCI: Mark some NVIDIA GPUs to avoid bus reset") Link: https://lore.kernel.org/r/2dcebea53a6eb9bd212ec6d8974af2e5e0333ef6.168112986... Signed-off-by: Wu Zongyong wuzongyong@linux.alibaba.com Signed-off-by: Bjorn Helgaas bhelgaas@google.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pci/quirks.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 73260bd217278..6d258f146aa90 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -3566,7 +3566,7 @@ static void quirk_no_bus_reset(struct pci_dev *dev) */ static void quirk_nvidia_no_bus_reset(struct pci_dev *dev) { - if ((dev->device & 0xffc0) == 0x2340) + if ((dev->device & 0xffc0) == 0x2340 || dev->device == 0x1eb8) quirk_no_bus_reset(dev); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,