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authorAlexander Duyck <alexander.h.duyck@intel.com>2008-08-26 04:25:05 -0700
committerJeff Garzik <jgarzik@redhat.com>2008-08-27 05:16:30 -0400
commitfe59de38c58d3eedc025be61ff3055a41776bbd4 (patch)
tree058932d84ae9e88ba4f4a2f184222278c5cdcb99 /drivers/net
parent7a6ea550f2f7592742ac765e5a3b4b5d1461e0bd (diff)
igb: ethtool -d reads EICR which is incorrect as it is read on clear
Ethtool -d is reading the EICR and ICR registers which is currently clearing these registers and masking off interrupts. To prevent this we read the EICS and ICS equivilents as they can be read without clearing or masking. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/igb/igb_ethtool.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/net/igb/igb_ethtool.c b/drivers/net/igb/igb_ethtool.c
index 11aee1309951..3eb78a66f8b6 100644
--- a/drivers/net/igb/igb_ethtool.c
+++ b/drivers/net/igb/igb_ethtool.c
@@ -373,13 +373,17 @@ static void igb_get_regs(struct net_device *netdev,
regs_buff[12] = rd32(E1000_EECD);
/* Interrupt */
- regs_buff[13] = rd32(E1000_EICR);
+ /* Reading EICS for EICR because they read the
+ * same but EICS does not clear on read */
+ regs_buff[13] = rd32(E1000_EICS);
regs_buff[14] = rd32(E1000_EICS);
regs_buff[15] = rd32(E1000_EIMS);
regs_buff[16] = rd32(E1000_EIMC);
regs_buff[17] = rd32(E1000_EIAC);
regs_buff[18] = rd32(E1000_EIAM);
- regs_buff[19] = rd32(E1000_ICR);
+ /* Reading ICS for ICR because they read the
+ * same but ICS does not clear on read */
+ regs_buff[19] = rd32(E1000_ICS);
regs_buff[20] = rd32(E1000_ICS);
regs_buff[21] = rd32(E1000_IMS);
regs_buff[22] = rd32(E1000_IMC);