kevin/linux
1
Fork 0
Code

PCI: Extract ATS disabling to a helper function

Browse Source 
Introduce quirk_no_ats() helper function to provide a standard way to
disable ATS capability in PCI quirks.

Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20230908143606.685930-2-bartosz.pawlowski@intel.com
Signed-off-by: Bartosz Pawlowski <bartosz.pawlowski@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This commit is contained in:
Bartosz Pawlowski 2023-09-08 14:36:05 +00:00 committed by Bjorn Helgaas
parent 0bb80ecc33
commit f18b1137d3
1 changed files with 9 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/pci/quirks.c
View File

@ -5507,6 +5507,12 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0420, quirk_no_ext_tags);
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0422, quirk_no_ext_tags);
#ifdef CONFIG_PCI_ATS
static void quirk_no_ats(struct pci_dev *pdev)
{
pci_info(pdev, "disabling ATS\n");
pdev->ats_cap = 0;
}
/*
* Some devices require additional driver setup to enable ATS. Don't use
* ATS for those devices as ATS will be enabled before the driver has had a
@ -5520,14 +5526,10 @@ static void quirk_amd_harvest_no_ats(struct pci_dev *pdev)
(pdev->subsystem_device == 0xce19 ||
pdev->subsystem_device == 0xcc10 ||
pdev->subsystem_device == 0xcc08))
goto no_ats;
else
return;
quirk_no_ats(pdev);
} else {
quirk_no_ats(pdev);
}
no_ats:
pci_info(pdev, "disabling ATS\n");
pdev->ats_cap = 0;
}
/* AMD Stoney platform GPU */