From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Shahed Shaikh <Shahed.Shaikh@cavium.com>,
Ariel Elior <ariel.elior@cavium.com>,
"David S . Miller" <davem@davemloft.net>,
Sasha Levin <sashal@kernel.org>,
netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 4.9 26/66] bnx2x: Ignore bandwidth attention in single function mode
Date: Sat, 9 Nov 2019 21:48:05 -0500 [thread overview]
Message-ID: <20191110024846.32598-26-sashal@kernel.org> (raw)
In-Reply-To: <20191110024846.32598-1-sashal@kernel.org>
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 a9681b191304a..ce8a777b1e975 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
next prev parent reply other threads:[~2019-11-10 2:49 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20191110024846.32598-1-sashal@kernel.org>
2019-11-10 2:47 ` [PATCH AUTOSEL 4.9 11/66] net: toshiba: fix return type of ndo_start_xmit function Sasha Levin
2019-11-10 2:47 ` [PATCH AUTOSEL 4.9 12/66] net: xilinx: " Sasha Levin
2019-11-10 2:47 ` [PATCH AUTOSEL 4.9 13/66] net: broadcom: " Sasha Levin
2019-11-10 2:47 ` [PATCH AUTOSEL 4.9 14/66] net: amd: " Sasha Levin
2019-11-10 2:47 ` [PATCH AUTOSEL 4.9 17/66] mlxsw: spectrum: Init shaper for TCs 8..15 Sasha Levin
2019-11-10 2:48 ` Sasha Levin [this message]
2019-11-10 2:48 ` [PATCH AUTOSEL 4.9 27/66] net: micrel: fix return type of ndo_start_xmit function Sasha Levin
2019-11-10 2:48 ` [PATCH AUTOSEL 4.9 49/66] net: smsc: " Sasha Levin
2019-11-10 2:48 ` [PATCH AUTOSEL 4.9 52/66] Bluetooth: L2CAP: Detect if remote is not able to use the whole MPS Sasha Levin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20191110024846.32598-26-sashal@kernel.org \
--to=sashal@kernel.org \
--cc=Shahed.Shaikh@cavium.com \
--cc=ariel.elior@cavium.com \
--cc=davem@davemloft.net \
--cc=linux-kernel@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=stable@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).