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PCI: Use FIELD_GET() in Sapphire RX 5600 XT Pulse quirk

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[ Upstream commit 04e82fa5951ca66495d7b05665eff673aa3852b4 ]

Use FIELD_GET() to remove dependences on the field position, i.e., the
shift value.  No functional change intended.

Separate because this isn't as trivial as the other FIELD_GET() changes.

See 907830b0fc9e ("PCI: Add a REBAR size quirk for Sapphire RX 5600 XT
Pulse")

Link: https://lore.kernel.org/r/20231010204436.1000644-3-helgaas@kernel.org
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Cc: Nirmoy Das <nirmoy.das@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Bjorn Helgaas 2023-10-10 15:44:28 -05:00 committed by Greg Kroah-Hartman
parent f22145b552
commit 58c91b699c
1 changed files with 4 additions and 4 deletions
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8
drivers/pci/pci.c
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@ -3755,14 +3755,14 @@ u32 pci_rebar_get_possible_sizes(struct pci_dev *pdev, int bar)
return 0;
pci_read_config_dword(pdev, pos + PCI_REBAR_CAP, &cap);
cap &= PCI_REBAR_CAP_SIZES;
cap = FIELD_GET(PCI_REBAR_CAP_SIZES, cap);
/* Sapphire RX 5600 XT Pulse has an invalid cap dword for BAR 0 */
if (pdev->vendor == PCI_VENDOR_ID_ATI && pdev->device == 0x731f &&
bar == 0 && cap == 0x7000)
cap = 0x3f000;
bar == 0 && cap == 0x700)
return 0x3f00;
return cap >> 4;
return cap;
}
EXPORT_SYMBOL(pci_rebar_get_possible_sizes);