PCI MSI: Unmask MSI if setup failed
The initial state of mask register of MSI is unmasked. We set it
masked before calling arch_setup_msi_irqs(). If arch_setup_msi_irq()
fails, it is better to restore the state of the mask register.
Reviewed-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index a088fc6..9ab4fe8 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -383,6 +383,7 @@
/* Configure MSI capability structure */
ret = arch_setup_msi_irqs(dev, nvec, PCI_CAP_ID_MSI);
if (ret) {
+ msi_mask_irq(entry, mask, ~mask);
msi_free_irqs(dev);
return ret;
}