[dpdk-stable] patch 'net/bnx2x: fix build with GCC 11' has been queued to stable release 20.11.2

[Xueming Li]

Hi,

FYI, your patch has been queued to stable release 20.11.2

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 06/14/21. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/steevenlee/dpdk

This queued commit can be viewed at:
https://github.com/steevenlee/dpdk/commit/724378c1a14cab60494c3da98714f474f06e0745

Thanks.

Xueming Li <xuemingl at nvidia.com>

---
>From 724378c1a14cab60494c3da98714f474f06e0745 Mon Sep 17 00:00:00 2001
From: Ferruh Yigit <ferruh.yigit at intel.com>
Date: Tue, 11 May 2021 14:14:32 +0100
Subject: [PATCH] net/bnx2x: fix build with GCC 11
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Cc: Luca Boccassi <bluca at debian.org>

[ upstream commit b3c740e03751215ab01841975b8f5764023f953b ]

Reproduced with '--buildtype=debugoptimized' config,
compiler version: gcc (GCC) 12.0.0 20210509 (experimental)

Build error:
In file included from ../drivers/net/bnx2x/bnx2x_rxtx.c:8:
../drivers/net/bnx2x/bnx2x_rxtx.c: In function ‘bnx2x_upd_rx_prod_fast’:
../drivers/net/bnx2x/bnx2x.h:1528:35:
    warning: ‘rx_prods’ is used uninitialized [-Wuninitialized]
 #define REG_WR32(sc, offset, val) bnx2x_reg_write32(sc, (offset), val)
                                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../drivers/net/bnx2x/bnx2x.h:1531:33:
	note: in expansion of macro ‘REG_WR32’
 1531 | #define REG_WR(sc, offset, val) REG_WR32(sc, offset, val)
      |                                 ^~~~~~~~
../drivers/net/bnx2x/bnx2x_rxtx.c:331:9:
	note: in expansion of macro ‘REG_WR’
  331 |         REG_WR(sc, fp->ustorm_rx_prods_offset, val[0]);
      |         ^~~~~~
../drivers/net/bnx2x/bnx2x_rxtx.c:324:40: note: ‘rx_prods’ declared here
  324 |         struct ustorm_eth_rx_producers rx_prods = { 0 };
      |                                        ^~~~~~~~

REG_WR32 requires 'uint32_t', use union instead of cast to 'uint32_t'.

Bugzilla ID: 692
Fixes: 38dff79ba736 ("net/bnx2x: update HSI")

Signed-off-by: Ferruh Yigit <ferruh.yigit at intel.com>
Acked-by: Kevin Traynor <ktraynor at redhat.com>
---
 drivers/net/bnx2x/bnx2x_rxtx.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/net/bnx2x/bnx2x_rxtx.c b/drivers/net/bnx2x/bnx2x_rxtx.c
index 57e2ce5045..2b17602290 100644
--- a/drivers/net/bnx2x/bnx2x_rxtx.c
+++ b/drivers/net/bnx2x/bnx2x_rxtx.c
@@ -321,14 +321,15 @@ static inline void
 bnx2x_upd_rx_prod_fast(struct bnx2x_softc *sc, struct bnx2x_fastpath *fp,
 		uint16_t rx_bd_prod, uint16_t rx_cq_prod)
 {
-	struct ustorm_eth_rx_producers rx_prods = { 0 };
-	uint32_t *val = NULL;
+	union {
+		struct ustorm_eth_rx_producers rx_prods;
+		uint32_t val;
+	} val = { {0} };
 
-	rx_prods.bd_prod  = rx_bd_prod;
-	rx_prods.cqe_prod = rx_cq_prod;
+	val.rx_prods.bd_prod  = rx_bd_prod;
+	val.rx_prods.cqe_prod = rx_cq_prod;
 
-	val = (uint32_t *)&rx_prods;
-	REG_WR(sc, fp->ustorm_rx_prods_offset, val[0]);
+	REG_WR(sc, fp->ustorm_rx_prods_offset, val.val);
 }
 
 static uint16_t
-- 
2.25.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2021-06-12 06:54:00.087592400 +0800
+++ 0137-net-bnx2x-fix-build-with-GCC-11.patch	2021-06-12 06:53:56.580000000 +0800
@@ -1 +1 @@
-From b3c740e03751215ab01841975b8f5764023f953b Mon Sep 17 00:00:00 2001
+From 724378c1a14cab60494c3da98714f474f06e0745 Mon Sep 17 00:00:00 2001
@@ -7,0 +8,3 @@
+Cc: Luca Boccassi <bluca at debian.org>
+
+[ upstream commit b3c740e03751215ab01841975b8f5764023f953b ]
@@ -35 +37,0 @@
-Cc: stable at dpdk.org