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bnx2x: Ignore bandwidth attention in single function mode

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[ 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>
This commit is contained in:
Shahed Shaikh 2018-09-20 11:22:51 -07:00 committed by Greg Kroah-Hartman
parent 7796870c62
commit 3d30bea686
1 changed files with 10 additions and 0 deletions
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10
drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
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@ -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);