bnx2x: Clean previous IGU status before ack

When enabling interrupts, acknowledge the interrupt only
after configuring the IGU to the correct interrupt mode
(otherwise it would dirty selftests)

Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
index 5409b30..b180a03 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
@@ -1681,7 +1681,6 @@ static int bnx2x_setup_irqs(struct bnx2x *bp)
                if (rc)
                        return rc;
        } else {
-               bnx2x_ack_int(bp);
                rc = bnx2x_req_irq(bp);
                if (rc) {
                        BNX2X_ERR("IRQ request failed  rc %d, aborting\n", rc);

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
index b483851..dce452d 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
@@ -1539,26 +1539,31 @@ static void bnx2x_igu_int_enable(struct bnx2x *bp)
        if (msix) {
                val &= ~(IGU_PF_CONF_INT_LINE_EN |
                         IGU_PF_CONF_SINGLE_ISR_EN);
-               val |= (IGU_PF_CONF_FUNC_EN |
-                       IGU_PF_CONF_MSI_MSIX_EN |
+               val |= (IGU_PF_CONF_MSI_MSIX_EN |
                        IGU_PF_CONF_ATTN_BIT_EN);
 
                if (single_msix)
                        val |= IGU_PF_CONF_SINGLE_ISR_EN;
        } else if (msi) {
                val &= ~IGU_PF_CONF_INT_LINE_EN;
-               val |= (IGU_PF_CONF_FUNC_EN |
-                       IGU_PF_CONF_MSI_MSIX_EN |
+               val |= (IGU_PF_CONF_MSI_MSIX_EN |
                        IGU_PF_CONF_ATTN_BIT_EN |
                        IGU_PF_CONF_SINGLE_ISR_EN);
        } else {
                val &= ~IGU_PF_CONF_MSI_MSIX_EN;
-               val |= (IGU_PF_CONF_FUNC_EN |
-                       IGU_PF_CONF_INT_LINE_EN |
+               val |= (IGU_PF_CONF_INT_LINE_EN |
                        IGU_PF_CONF_ATTN_BIT_EN |
                        IGU_PF_CONF_SINGLE_ISR_EN);
        }
 
+       /* Clean previous status - need to configure igu prior to ack*/
+       if ((!msix) || single_msix) {
+               REG_WR(bp, IGU_REG_PF_CONFIGURATION, val);
+               bnx2x_ack_int(bp);
+       }
+
+       val |= IGU_PF_CONF_FUNC_EN;
+
        DP(NETIF_MSG_IFUP, "write 0x%x to IGU  mode %s\n",
           val, (msix ? "MSI-X" : (msi ? "MSI" : "INTx")));