linux-kernel - [net-next PATCH V2] octeontx2-af: fix array bound error

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Message-ID: <20220211155539.13931-1-hkelam@marvell.com>
Date:   Fri, 11 Feb 2022 21:25:39 +0530
From:   Hariprasad Kelam <hkelam@...vell.com>
To:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     <kuba@...nel.org>, <davem@...emloft.net>, <sgoutham@...vell.com>,
        <lcherian@...vell.com>, <gakula@...vell.com>, <jerinj@...vell.com>,
        <sbhatta@...vell.com>, <hkelam@...vell.com>
Subject: [net-next PATCH V2] octeontx2-af: fix array bound error

This patch fixes below error by using proper data type.

drivers/net/ethernet/marvell/octeontx2/af/rpm.c: In function
'rpm_cfg_pfc_quanta_thresh':
include/linux/find.h:40:23: error: array subscript 'long unsigned
int[0]' is partly outside array bounds of 'u16[1]' {aka 'short unsigned
int[1]'} [-Werror=array-bounds]
   40 |                 val = *addr & GENMASK(size - 1, offset);

Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
Signed-off-by: Hariprasad Kelam <hkelam@...vell.com>
---
v2 * add Reported-by tag

 drivers/net/ethernet/marvell/octeontx2/af/rpm.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rpm.c b/drivers/net/ethernet/marvell/octeontx2/af/rpm.c
index d7a8aad46e12..47e83d7a5804 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rpm.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rpm.c
@@ -141,14 +141,15 @@ int rpm_lmac_get_pause_frm_status(void *rpmd, int lmac_id,
 	return 0;
 }

-static void rpm_cfg_pfc_quanta_thresh(rpm_t *rpm, int lmac_id, u16 pfc_en,
+static void rpm_cfg_pfc_quanta_thresh(rpm_t *rpm, int lmac_id,
+				      unsigned long pfc_en,
 				      bool enable)
 {
 	u64 quanta_offset = 0, quanta_thresh = 0, cfg;
 	int i, shift;

 	/* Set pause time and interval */
-	for_each_set_bit(i, (unsigned long *)&pfc_en, 16) {
+	for_each_set_bit(i, &pfc_en, 16) {
 		switch (i) {
 		case 0:
 		case 1:
--
2.17.1