[PATCH] genirq/msi: correct CONFIG_PCI_MSI_ARCH_FALLBACKS macro name in comment

[Ethan Nelson-Moore <enelsonmoore@gmail.com>]

A comment in kernel/irq/msi.c incorrectly refers to
CONFIG_PCI_MSI_ARCH_FALLBACK instead of CONFIG_PCI_MSI_ARCH_FALLBACKS.
Correct it.

Discovered while searching for CONFIG_* symbols referenced in code but
not defined in any Kconfig file.

Signed-off-by: Ethan Nelson-Moore <enelsonmoore@gmail.com>
---
 kernel/irq/msi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/irq/msi.c b/kernel/irq/msi.c
index 3cafa40e6ce3..903be7289c53 100644
--- a/kernel/irq/msi.c
+++ b/kernel/irq/msi.c
@@ -591,7 +591,7 @@ void msi_device_destroy_sysfs(struct device *dev)
 	msi_for_each_desc(desc, dev, MSI_DESC_ALL)
 		msi_sysfs_remove_desc(dev, desc);
 }
-#endif /* CONFIG_PCI_MSI_ARCH_FALLBACK || CONFIG_PCI_XEN */
+#endif /* CONFIG_PCI_MSI_ARCH_FALLBACKS || CONFIG_PCI_XEN */
 #else /* CONFIG_SYSFS */
 static inline int msi_sysfs_create_group(struct device *dev) { return 0; }
 static inline int msi_sysfs_populate_desc(struct device *dev, struct msi_desc *desc) { return 0; }
-- 
2.43.0