ixgbe: fix bug with shared interrupts
fix ixgbe bug reported with shared legacy interrupts
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index 11bf86b..cfaa3ca 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -1245,8 +1245,13 @@
/* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read
* therefore no explict interrupt disable is necessary */
eicr = IXGBE_READ_REG(hw, IXGBE_EICR);
- if (!eicr)
+ if (!eicr) {
+ /* shared interrupt alert!
+ * make sure interrupts are enabled because the read will
+ * have disabled interrupts due to EIAM */
+ ixgbe_irq_enable(adapter);
return IRQ_NONE; /* Not our interrupt */
+ }
if (eicr & IXGBE_EICR_LSC)
ixgbe_check_lsc(adapter);