This is a note to let you know that I've just added the patch titled
PCI: Extract ATS disabling to a helper function
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
pci-extract-ats-disabling-to-a-helper-function.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit ee073d9795b5ceb536dce6b772d9b901b69858e1
Author: Bartosz Pawlowski <bartosz.pawlowski@xxxxxxxxx>
Date: Fri Sep 8 14:36:05 2023 +0000
PCI: Extract ATS disabling to a helper function
[ Upstream commit f18b1137d38c091cc8c16365219f0a1d4a30b3d1 ]
Introduce quirk_no_ats() helper function to provide a standard way to
disable ATS capability in PCI quirks.
Suggested-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230908143606.685930-2-bartosz.pawlowski@xxxxxxxxx
Signed-off-by: Bartosz Pawlowski <bartosz.pawlowski@xxxxxxxxx>
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 5955e682c4348..30efa1ee595d3 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -5379,6 +5379,12 @@ 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
@@ -5392,14 +5398,10 @@ 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 */
