[PATCH] PCI: fix Sapphire PCI rebar quirk

[Alex Deucher]

There was a quirk added to add a workaround for a Sapphire
RX 5600 XT Pulse.  However, the quirk only checks the vendor
ids and not the subsystem ids.  The quirk really should
have checked the subsystem vendor and device ids as now
this quirk gets applied to all RX 5600 and it seems to
cause problems on some Dell laptops.  Add a subsystem vendor
id check to limit the quirk to Sapphire boards.

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/1707
Fixes: 907830b0fc9e ("PCI: Add a REBAR size quirk for Sapphire RX 5600 XT Pulse")
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
Cc: Christian König <christian.koenig at amd.com>
Cc: Bjorn Helgaas <bhelgaas at google.com>
Cc: Nirmoy Das <nirmoy.aiemd at gmail.com>
---
 drivers/pci/pci.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 225a6cd2e9ca3..dec917636974e 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -3766,6 +3766,7 @@ u32 pci_rebar_get_possible_sizes(struct pci_dev *pdev, int bar)
 
 	/* Sapphire RX 5600 XT Pulse has an invalid cap dword for BAR 0 */
 	if (pdev->vendor == PCI_VENDOR_ID_ATI && pdev->device == 0x731f &&
+	    pdev->subsystem_vendor == 0x1da2 &&
 	    bar == 0 && cap == 0x700)
 		return 0x3f00;
 
-- 
2.48.1