From 0349a070881f7e3b4472d886989db092ed3ccac8 Mon Sep 17 00:00:00 2001 From: Raphael Norwitz Date: Thu, 8 Apr 2021 19:05:27 +0000 Subject: [PATCH] PCI: Delay after FLR of Intel DC P4510 NVMe Like the Intel DC P3700 NVMe, the Intel P4510 NVMe exhibits a timeout failure when the driver tries to interact with the device too soon after an FLR. Add a device-specific reset method that delays 250ms after doing an FLR. Link: https://lore.kernel.org/r/20210408190521.16897-1-raphael.norwitz@nutanix.com Signed-off-by: Alay Shah Signed-off-by: Suresh Gumpula Signed-off-by: Raphael Norwitz Signed-off-by: Bjorn Helgaas Reviewed-by: Alex Williamson --- drivers/pci/quirks.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 653660e3ba9e..5a8c059b848d 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -3922,6 +3922,7 @@ static const struct pci_dev_reset_methods pci_dev_reset_methods[] = { reset_ivb_igd }, { PCI_VENDOR_ID_SAMSUNG, 0xa804, nvme_disable_and_flr }, { PCI_VENDOR_ID_INTEL, 0x0953, delay_250ms_after_flr }, + { PCI_VENDOR_ID_INTEL, 0x0a54, delay_250ms_after_flr }, { PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID, reset_chelsio_generic_dev }, { 0 } -- 2.20.1