From ebe61d80b42662a1cf8d24e0b8605aa16fa6e4d0 Mon Sep 17 00:00:00 2001
From: Yuval Mintz <yuvalmin@broadcom.com>
Date: Mon, 14 Jan 2013 05:11:48 +0000
Subject: [PATCH] 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>
---
drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c | 1 -
.../net/ethernet/broadcom/bnx2x/bnx2x_main.c | 17 +++++++++++------
2 files changed, 11 insertions(+), 7 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
index 5409b303a69b..b180a0379003 100644
--- 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 b4838510f3da..dce452d33c61 100644
--- 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")));
--
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