PCI: Add ACS quirk for Pericom PI7C9X2G404 switches [12d8:b404]

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[ Upstream commit 5907a90551 ]

12d8:b404 is apparently another PCI ID for Pericom PI7C9X2G404 (as
identified by the chip silkscreen and lspci).

It is also affected by the PI7C9X2G errata (e.g. a network card attached
to it fails under load when P2P Redirect Request is enabled), so apply
the same quirk to this PCI ID too.

PCI bridge [0604]: Pericom Semiconductor PI7C9X2G404 EV/SV PCIe2 4-Port/4-Lane Packet Switch [12d8:b404] (rev 01)

Fixes: acd61ffb2f ("PCI: Add ACS quirk for Pericom PI7C9X2G switches")
Closes: https://lore.kernel.org/all/a1d926f0-4cb5-4877-a4df-617902648d80@green-communications.fr/
Signed-off-by: Nicolas Cavallari <nicolas.cavallari@green-communications.fr>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20260119160915.26456-1-nicolas.cavallari@green-communications.fr
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Nicolas Cavallari 2026-01-19 17:08:33 +01:00 • committed by Greg Kroah-Hartman

parent 12b1681793

commit 782368c13f

1 changed files with 4 additions and 0 deletions

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drivers/pci/quirks.c

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