Secondary bus reset will fail if NVIDIA T4 card is direct attached to a
root port.
So avoid to do bus reset, pci_parent_bus_reset() works nomarlly.
Maybe NVIDIA guys can do some detailed explanation abount the SBR
behaviour of GPUs.
Signed-off-by: Wu Zongyong <wuzongyong@xxxxxxxxxxxxxxxxx>
---
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 44cab813bf95..be86b93b9e38 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -3618,7 +3618,7 @@ 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,
--
2.34.3
