Patch "PCI/MSI: Provide stubs for IMS functions" has been added to the 6.5-stable tree

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

    PCI/MSI: Provide stubs for IMS functions

to the 6.5-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-msi-provide-stubs-for-ims-functions.patch
and it can be found in the queue-6.5 subdirectory.

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



commit 426ca07a0f46aa48e11cf6aee4d3ac6916205d5a
Author: Reinette Chatre <reinette.chatre@xxxxxxxxx>
Date:   Tue Oct 17 10:56:38 2023 -0700

    PCI/MSI: Provide stubs for IMS functions
    
    [ Upstream commit 41efa431244f6498833ff8ee8dde28c4924c5479 ]
    
    The IMS related functions (pci_create_ims_domain(), pci_ims_alloc_irq(),
    and pci_ims_free_irq()) are not declared when CONFIG_PCI_MSI is disabled.
    
    Provide definitions of these functions for use when callers are compiled
    with CONFIG_PCI_MSI disabled.
    
    Fixes: 0194425af0c8 ("PCI/MSI: Provide IMS (Interrupt Message Store) support")
    Fixes: c9e5bea27383 ("PCI/MSI: Provide pci_ims_alloc/free_irq()")
    Signed-off-by: Reinette Chatre <reinette.chatre@xxxxxxxxx>
    Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
    Link: https://lore.kernel.org/r/14ff656899a3757453f8584c1109d7a9b98fa258.1697564731.git.reinette.chatre@xxxxxxxxx
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/include/linux/pci.h b/include/linux/pci.h
index 7ee498cd1f374..c8688d13cc224 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1625,6 +1625,8 @@ struct msix_entry {
 	u16	entry;	/* Driver uses to specify entry, OS writes */
 };
 
+struct msi_domain_template;
+
 #ifdef CONFIG_PCI_MSI
 int pci_msi_vec_count(struct pci_dev *dev);
 void pci_disable_msi(struct pci_dev *dev);
@@ -1657,6 +1659,11 @@ void pci_msix_free_irq(struct pci_dev *pdev, struct msi_map map);
 void pci_free_irq_vectors(struct pci_dev *dev);
 int pci_irq_vector(struct pci_dev *dev, unsigned int nr);
 const struct cpumask *pci_irq_get_affinity(struct pci_dev *pdev, int vec);
+bool pci_create_ims_domain(struct pci_dev *pdev, const struct msi_domain_template *template,
+			   unsigned int hwsize, void *data);
+struct msi_map pci_ims_alloc_irq(struct pci_dev *pdev, union msi_instance_cookie *icookie,
+				 const struct irq_affinity_desc *affdesc);
+void pci_ims_free_irq(struct pci_dev *pdev, struct msi_map map);
 
 #else
 static inline int pci_msi_vec_count(struct pci_dev *dev) { return -ENOSYS; }
@@ -1720,6 +1727,25 @@ static inline const struct cpumask *pci_irq_get_affinity(struct pci_dev *pdev,
 {
 	return cpu_possible_mask;
 }
+
+static inline bool pci_create_ims_domain(struct pci_dev *pdev,
+					 const struct msi_domain_template *template,
+					 unsigned int hwsize, void *data)
+{ return false; }
+
+static inline struct msi_map pci_ims_alloc_irq(struct pci_dev *pdev,
+					       union msi_instance_cookie *icookie,
+					       const struct irq_affinity_desc *affdesc)
+{
+	struct msi_map map = { .index = -ENOSYS, };
+
+	return map;
+}
+
+static inline void pci_ims_free_irq(struct pci_dev *pdev, struct msi_map map)
+{
+}
+
 #endif
 
 /**
@@ -2612,14 +2638,6 @@ static inline bool pci_is_thunderbolt_attached(struct pci_dev *pdev)
 void pci_uevent_ers(struct pci_dev *pdev, enum  pci_ers_result err_type);
 #endif
 
-struct msi_domain_template;
-
-bool pci_create_ims_domain(struct pci_dev *pdev, const struct msi_domain_template *template,
-			   unsigned int hwsize, void *data);
-struct msi_map pci_ims_alloc_irq(struct pci_dev *pdev, union msi_instance_cookie *icookie,
-				 const struct irq_affinity_desc *affdesc);
-void pci_ims_free_irq(struct pci_dev *pdev, struct msi_map map);
-
 #include <linux/dma-mapping.h>
 
 #define pci_printk(level, pdev, fmt, arg...) \



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