igb: don't read eicr when responding to legacy interrupts
The interrupt handler was reading eicr and then doing nothing with the
result. I have removed the variable and the register read since they
provide no value to the legacy interrupt handler.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index e3f521c..56c1455 100644
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -3519,7 +3519,7 @@
}
/**
- * igb_intr - Interrupt Handler
+ * igb_intr - Legacy Interrupt Handler
* @irq: interrupt number
* @data: pointer to a network interface device structure
**/
@@ -3531,7 +3531,6 @@
/* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No
* need for the IMC write */
u32 icr = rd32(E1000_ICR);
- u32 eicr = 0;
if (!icr)
return IRQ_NONE; /* Not our interrupt */
@@ -3547,8 +3546,6 @@
adapter->stats.doosync++;
}
- eicr = rd32(E1000_EICR);
-
if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
hw->mac.get_link_status = 1;
/* guard against interrupt when we're going down */