[RFC PATCH v2 11/21] PCI: MSI: Add helper function to set system wide MSI support

[Sunil V L]

Like pci_no_msi() used to disable MSI support, add a function to enable
system wide MSI support.

Signed-off-by: Sunil V L <sunilvl at ventanamicro.com>
---
 drivers/pci/msi/msi.c | 5 +++++
 drivers/pci/pci.h     | 2 ++
 2 files changed, 7 insertions(+)

diff --git a/drivers/pci/msi/msi.c b/drivers/pci/msi/msi.c
index ef1d8857a51b..e76ccb8b5f0b 100644
--- a/drivers/pci/msi/msi.c
+++ b/drivers/pci/msi/msi.c
@@ -913,3 +913,8 @@ void pci_no_msi(void)
 {
 	pci_msi_enable = 0;
 }
+
+void pci_set_msi(void)
+{
+	pci_msi_enable = 1;
+}
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 39a8932dc340..2f876c29f75c 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -167,8 +167,10 @@ extern unsigned int pci_pm_d3hot_delay;
 
 #ifdef CONFIG_PCI_MSI
 void pci_no_msi(void);
+void pci_set_msi(void);
 #else
 static inline void pci_no_msi(void) { }
+static inline void pci_set_msi(void) { }
 #endif
 
 void pci_realloc_get_opt(char *);
-- 
2.39.2