Commit f18b1137 authored by Bartosz Pawlowski's avatar Bartosz Pawlowski Committed by Bjorn Helgaas
Browse files

PCI: Extract ATS disabling to a helper function 



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

Suggested-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20230908143606.685930-2-bartosz.pawlowski@intel.com


Signed-off-by: default avatarBartosz Pawlowski <bartosz.pawlowski@intel.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
parent 0bb80ecc

drivers/pci/quirks.c

+9 −7
Original line number Diff line number Diff line
@@ -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 */