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 5.4-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-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From f18b1137d38c091cc8c16365219f0a1d4a30b3d1 Mon Sep 17 00:00:00 2001
From: Bartosz Pawlowski <bartosz.pawlowski@xxxxxxxxx>
Date: Fri, 8 Sep 2023 14:36:05 +0000
Subject: PCI: Extract ATS disabling to a helper function
From: Bartosz Pawlowski <bartosz.pawlowski@xxxxxxxxx>
commit f18b1137d38c091cc8c16365219f0a1d4a30b3d1 upstream.
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: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/pci/quirks.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -5389,6 +5389,12 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SE
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(str
(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 */
Patches currently in stable-queue which might be from bartosz.pawlowski@xxxxxxxxx are
queue-5.4/pci-extract-ats-disabling-to-a-helper-function.patch
queue-5.4/pci-disable-ats-for-specific-intel-ipu-e2000-devices.patch
