Patch "PCI: Make pci_dev_is_disconnected() helper public for other drivers" has been added to the 6.1-stable tree

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This is a note to let you know that I've just added the patch titled

    PCI: Make pci_dev_is_disconnected() helper public for other drivers

to the 6.1-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-make-pci_dev_is_disconnected-helper-public-for-o.patch
and it can be found in the queue-6.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 67dedcdfa68c2e44beee79f442be3a9bccd581a3
Author: Ethan Zhao <haifeng.zhao@xxxxxxxxxxxxxxx>
Date:   Tue Mar 5 20:21:14 2024 +0800

    PCI: Make pci_dev_is_disconnected() helper public for other drivers
    
    [ Upstream commit 39714fd73c6b60a8d27bcc5b431afb0828bf4434 ]
    
    Make pci_dev_is_disconnected() public so that it can be called from
    Intel VT-d driver to quickly fix/workaround the surprise removal
    unplug hang issue for those ATS capable devices on PCIe switch downstream
    hotplug capable ports.
    
    Beside pci_device_is_present() function, this one has no config space
    space access, so is light enough to optimize the normal pure surprise
    removal and safe removal flow.
    
    Acked-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
    Reviewed-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
    Tested-by: Haorong Ye <yehaorong@xxxxxxxxxxxxx>
    Signed-off-by: Ethan Zhao <haifeng.zhao@xxxxxxxxxxxxxxx>
    Link: https://lore.kernel.org/r/20240301080727.3529832-2-haifeng.zhao@xxxxxxxxxxxxxxx
    Signed-off-by: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx>
    Signed-off-by: Joerg Roedel <jroedel@xxxxxxx>
    Stable-dep-of: 4fc82cd907ac ("iommu/vt-d: Don't issue ATS Invalidation request when device is disconnected")
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index e1d02b7c60294..9950deeb047a7 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -357,11 +357,6 @@ static inline int pci_dev_set_disconnected(struct pci_dev *dev, void *unused)
 	return 0;
 }
 
-static inline bool pci_dev_is_disconnected(const struct pci_dev *dev)
-{
-	return dev->error_state == pci_channel_io_perm_failure;
-}
-
 /* pci_dev priv_flags */
 #define PCI_DEV_ADDED 0
 #define PCI_DPC_RECOVERED 1
diff --git a/include/linux/pci.h b/include/linux/pci.h
index eccaf1abea79d..f5d89a4b811f1 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -2355,6 +2355,11 @@ static inline struct pci_dev *pcie_find_root_port(struct pci_dev *dev)
 	return NULL;
 }
 
+static inline bool pci_dev_is_disconnected(const struct pci_dev *dev)
+{
+	return dev->error_state == pci_channel_io_perm_failure;
+}
+
 void pci_request_acs(void);
 bool pci_acs_enabled(struct pci_dev *pdev, u16 acs_flags);
 bool pci_acs_path_enabled(struct pci_dev *start,




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