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authorJiang Liu <jiang.liu@linux.intel.com>2015-07-09 16:00:36 +0800
committerThomas Gleixner <tglx@linutronix.de>2015-07-22 18:37:42 +0200
commitc179c9b978b90bdf9cb39f5b5716dede157f1eaf (patch)
tree747a85c02a9fd9c4ac9cb33608af8c3f88e2476c /include/linux/msi.h
parentfaca10b9e63e880c81388fbbedf7ede6dcd77c70 (diff)
PCI: Add helper function msi_desc_to_pci_sysdata()
Add helper function msi_desc_to_pci_sysdata() to retrieve sysdata from an MSI descriptor. To avoid pulling include/linux/pci.h into include/linux/msi.h, msi_desc_to_pci_sysdata() is implemented as a normal function instead of an inline function. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Reviewed-by: Yijing Wang <wangyijing@huawei.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Tony Luck <tony.luck@intel.com> Cc: linux-arm-kernel@lists.infradead.org Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Stuart Yoder <stuart.yoder@freescale.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Alexander Gordeev <agordeev@redhat.com> Link: http://lkml.kernel.org/r/1436428847-8886-2-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/linux/msi.h')
-rw-r--r--include/linux/msi.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/msi.h b/include/linux/msi.h
index 8ac4a68ffae2..cfbd2afeaf64 100644
--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -60,6 +60,13 @@ static inline struct pci_dev *msi_desc_to_pci_dev(struct msi_desc *desc)
{
return desc->dev;
}
+
+void *msi_desc_to_pci_sysdata(struct msi_desc *desc);
+#else /* CONFIG_PCI_MSI */
+static inline void *msi_desc_to_pci_sysdata(struct msi_desc *desc)
+{
+ return NULL;
+}
#endif /* CONFIG_PCI_MSI */
void __pci_read_msi_msg(struct msi_desc *entry, struct msi_msg *msg);