e1000e: cleanup functions that clear hardware statistics

The e1000_clear_hw_cntrs_*() functions read the registers to clear them.
There is no reason to save the register contents so the temp variable can
be removed.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 34 insertions, 36 deletions

diff --git a/drivers/net/e1000e/82571.c b/drivers/net/e1000e/82571.c
index 468dd7d4fcad..c5dc1b3be230 100644
--- a/drivers/net/e1000e/82571.c
+++ b/drivers/net/e1000e/82571.c
@@ -1613,44 +1613,42 @@ static s32 e1000_fix_nvm_checksum_82571(struct e1000_hw *hw)
  **/
 static void e1000_clear_hw_cntrs_82571(struct e1000_hw *hw)
 {
-        u32 temp;
-
         e1000e_clear_hw_cntrs_base(hw);
 
-        temp = er32(PRC64);
-        temp = er32(PRC127);
-        temp = er32(PRC255);
-        temp = er32(PRC511);
-        temp = er32(PRC1023);
-        temp = er32(PRC1522);
-        temp = er32(PTC64);
-        temp = er32(PTC127);
-        temp = er32(PTC255);
-        temp = er32(PTC511);
-        temp = er32(PTC1023);
-        temp = er32(PTC1522);
-
-        temp = er32(ALGNERRC);
-        temp = er32(RXERRC);
-        temp = er32(TNCRS);
-        temp = er32(CEXTERR);
-        temp = er32(TSCTC);
-        temp = er32(TSCTFC);
-
-        temp = er32(MGTPRC);
-        temp = er32(MGTPDC);
-        temp = er32(MGTPTC);
-
-        temp = er32(IAC);
-        temp = er32(ICRXOC);
-
-        temp = er32(ICRXPTC);
-        temp = er32(ICRXATC);
-        temp = er32(ICTXPTC);
-        temp = er32(ICTXATC);
-        temp = er32(ICTXQEC);
-        temp = er32(ICTXQMTC);
-        temp = er32(ICRXDMTC);
+        er32(PRC64);
+        er32(PRC127);
+        er32(PRC255);
+        er32(PRC511);
+        er32(PRC1023);
+        er32(PRC1522);
+        er32(PTC64);
+        er32(PTC127);
+        er32(PTC255);
+        er32(PTC511);
+        er32(PTC1023);
+        er32(PTC1522);
+
+        er32(ALGNERRC);
+        er32(RXERRC);
+        er32(TNCRS);
+        er32(CEXTERR);
+        er32(TSCTC);
+        er32(TSCTFC);
+
+        er32(MGTPRC);
+        er32(MGTPDC);
+        er32(MGTPTC);
+
+        er32(IAC);
+        er32(ICRXOC);
+
+        er32(ICRXPTC);
+        er32(ICRXATC);
+        er32(ICTXPTC);
+        er32(ICTXATC);
+        er32(ICTXQEC);
+        er32(ICTXQMTC);
+        er32(ICRXDMTC);
 }
 
 static struct e1000_mac_operations e82571_mac_ops = {