linux-kernel - [PATCH v1 1/1] platform/mellanox: mlxbf-pmc: Fix offset calculation for crspace events

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date: Wed, 17 Jan 2024 05:01:34 -0500
From: Shravan Kumar Ramani <shravankr@...dia.com>
To: Hans de Goede <hdegoede@...hat.com>, Ilpo Jarvinen
	<ilpo.jarvinen@...ux.intel.com>, Vadim Pasternak <vadimp@...dia.com>, "David
 Thompson" <davthompson@...dia.com>
CC: Shravan Kumar Ramani <shravankr@...dia.com>,
	<platform-driver-x86@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v1 1/1] platform/mellanox: mlxbf-pmc: Fix offset calculation for crspace events

The event selector fields for 2 counters are contained in one
32-bit register and the current logic does not account for this.

Fixes: 423c3361855c ("platform/mellanox: mlxbf-pmc: Add support for BlueField-3")
Signed-off-by: Shravan Kumar Ramani <shravankr@...dia.com>
Reviewed-by: David Thompson <davthompson@...dia.com>
Reviewed-by: Vadim Pasternak <vadimp@...dia.com>
---
 drivers/platform/mellanox/mlxbf-pmc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/platform/mellanox/mlxbf-pmc.c b/drivers/platform/mellanox/mlxbf-pmc.c
index 1dd84c7a79de..b1995ac268d7 100644
--- a/drivers/platform/mellanox/mlxbf-pmc.c
+++ b/drivers/platform/mellanox/mlxbf-pmc.c
@@ -1170,7 +1170,7 @@ static int mlxbf_pmc_program_crspace_counter(int blk_num, uint32_t cnt_num,
 	int ret;
 
 	addr = pmc->block[blk_num].mmio_base +
-		(rounddown(cnt_num, 2) * MLXBF_PMC_CRSPACE_PERFSEL_SZ);
+		((cnt_num / 2) * MLXBF_PMC_CRSPACE_PERFSEL_SZ);
 	ret = mlxbf_pmc_readl(addr, &word);
 	if (ret)
 		return ret;
@@ -1413,7 +1413,7 @@ static int mlxbf_pmc_read_crspace_event(int blk_num, uint32_t cnt_num,
 	int ret;
 
 	addr = pmc->block[blk_num].mmio_base +
-		(rounddown(cnt_num, 2) * MLXBF_PMC_CRSPACE_PERFSEL_SZ);
+		((cnt_num / 2) * MLXBF_PMC_CRSPACE_PERFSEL_SZ);
 	ret = mlxbf_pmc_readl(addr, &word);
 	if (ret)
 		return ret;
-- 
2.30.1