| From 6d3ee00ef0491ad33ce57812d7f203e679f03c2f Mon Sep 17 00:00:00 2001 |
| From: Sasha Levin <sashal@kernel.org> |
| Date: Thu, 20 Sep 2018 11:22:51 -0700 |
| Subject: bnx2x: Ignore bandwidth attention in single function mode |
| |
| From: Shahed Shaikh <Shahed.Shaikh@cavium.com> |
| |
| [ Upstream commit 75a110a1783ef8324ffd763b24f4ac268253cbca ] |
| |
| This is a workaround for FW bug - |
| MFW generates bandwidth attention in single function mode, which |
| is only expected to be generated in multi function mode. |
| This undesired attention in SF mode results in incorrect HW |
| configuration and resulting into Tx timeout. |
| |
| Signed-off-by: Shahed Shaikh <Shahed.Shaikh@cavium.com> |
| Signed-off-by: Ariel Elior <ariel.elior@cavium.com> |
| Signed-off-by: David S. Miller <davem@davemloft.net> |
| Signed-off-by: Sasha Levin <sashal@kernel.org> |
| --- |
| drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c | 10 ++++++++++ |
| 1 file changed, 10 insertions(+) |
| |
| diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c |
| index 68c62e32e8820..af57568c922eb 100644 |
| --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c |
| +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c |
| @@ -3540,6 +3540,16 @@ static void bnx2x_drv_info_iscsi_stat(struct bnx2x *bp) |
| */ |
| static void bnx2x_config_mf_bw(struct bnx2x *bp) |
| { |
| + /* Workaround for MFW bug. |
| + * MFW is not supposed to generate BW attention in |
| + * single function mode. |
| + */ |
| + if (!IS_MF(bp)) { |
| + DP(BNX2X_MSG_MCP, |
| + "Ignoring MF BW config in single function mode\n"); |
| + return; |
| + } |
| + |
| if (bp->link_vars.link_up) { |
| bnx2x_cmng_fns_init(bp, true, CMNG_FNS_MINMAX); |
| bnx2x_link_sync_notify(bp); |
| -- |
| 2.20.1 |
| |
