[PATCH AUTOSEL 6.1 05/16] Revert "PCI: Clear PCI_STATUS when setting up device"

Sasha Levin
2022-12-20T01:22:08Z

From: Bjorn Helgaas <bhelgaas@google.com>

[ Upstream commit 44e985938e85503d0a69ec538e15fd33c1a4df05 ]

This reverts commit 6cd514e58f12b211d638dbf6f791fa18d854f09c.

Christophe Fergeau reported that 6cd514e58f12 ("PCI: Clear PCI_STATUS when
setting up device") causes boot failures when trying to start linux guests
with Apple's virtualization framework (for example using
https://developer.apple.com/documentation/virtualization/running_linux_in_a_virtual_machine?language=objc)

6cd514e58f12 only solved a cosmetic problem, so revert it to fix the boot
failures.

Link: https://bugzilla.redhat.com/show_bug.cgi?id=2137803
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/pci/probe.c | 3 ---
1 file changed, 3 deletions(-)

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index b66fa42c4b1f..1d6f7b502020 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1891,9 +1891,6 @@ int pci_setup_device(struct pci_dev *dev)

dev->broken_intx_masking = pci_intx_mask_broken(dev);

- /* Clear errors left from system firmware */
- pci_write_config_word(dev, PCI_STATUS, 0xffff);
-
switch (dev->hdr_type) { /* header type */
case PCI_HEADER_TYPE_NORMAL: /* standard header */
if (class == PCI_CLASS_BRIDGE_PCI)
--
2.35.1