tg3: Disable multivec mode for 1 MSIX vector
For single vector MSI-X allocations, we do not want to enable
multivector modes. This patch makes the necessary corrections.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index d4b29f4..b2a16b4 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -8322,7 +8322,8 @@
tw32_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl);
udelay(100);
- if (tp->tg3_flags2 & TG3_FLG2_USING_MSIX) {
+ if ((tp->tg3_flags2 & TG3_FLG2_USING_MSIX) &&
+ tp->irq_cnt > 1) {
val = tr32(MSGINT_MODE);
val |= MSGINT_MODE_MULTIVEC_EN | MSGINT_MODE_ENABLE;
tw32(MSGINT_MODE, val);
@@ -9062,7 +9063,8 @@
if (tp->tg3_flags2 & TG3_FLG2_USING_MSI_OR_MSIX) {
u32 msi_mode = tr32(MSGINT_MODE);
- if (tp->tg3_flags2 & TG3_FLG2_USING_MSIX)
+ if ((tp->tg3_flags2 & TG3_FLG2_USING_MSIX) &&
+ tp->irq_cnt > 1)
msi_mode |= MSGINT_MODE_MULTIVEC_EN;
tw32(MSGINT_MODE, msi_mode | MSGINT_MODE_ENABLE);
}