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Commit c6141c49 authored by Bartosz Pawlowski's avatar Bartosz Pawlowski Committed by Greg Kroah-Hartman
Browse files

PCI: Extract ATS disabling to a helper function 



commit f18b1137d38c091cc8c16365219f0a1d4a30b3d1 upstream.

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>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 8711fa0c

drivers/pci/quirks.c

+7 −2
Original line number Diff line number Diff line
@@ -5389,6 +5389,12 @@ 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
@@ -5401,8 +5407,7 @@ static void quirk_amd_harvest_no_ats(struct pci_dev *pdev) 
	    (pdev->device == 0x7341 && pdev->revision != 0x00))

		return;



	pci_info(pdev, "disabling ATS\n");

	pdev->ats_cap = 0;

	quirk_no_ats(pdev);

}



/* AMD Stoney platform GPU */