linux-kernel - [PATCH AUTOSEL 6.1 02/10] platform/x86/amd/pmf: Fix unsigned comparison with less than zero

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-Id: <20230822113628.3551393-2-sashal@kernel.org>
Date:   Tue, 22 Aug 2023 07:36:20 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Yang Li <yang.lee@...ux.alibaba.com>,
        Abaci Robot <abaci@...ux.alibaba.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Sasha Levin <sashal@...nel.org>, Shyam-sundar.S-k@....com,
        markgross@...nel.org, platform-driver-x86@...r.kernel.org
Subject: [PATCH AUTOSEL 6.1 02/10] platform/x86/amd/pmf: Fix unsigned comparison with less than zero

From: Yang Li <yang.lee@...ux.alibaba.com>

[ Upstream commit 785c00993dc4c4bb2f7b0f3a3f29c03a6f7aab2e ]

The return value from the call to amd_pmf_get_pprof_modes() is int.
However, the return value is being assigned to an unsigned char
variable 'mode', so making 'mode' an int.

silence the warning:
./drivers/platform/x86/amd/pmf/sps.c:183:5-9: WARNING: Unsigned expression compared with zero: mode < 0

Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=5995
Signed-off-by: Yang Li <yang.lee@...ux.alibaba.com>
Link: https://lore.kernel.org/r/20230727014315.51375-1-yang.lee@linux.alibaba.com
Reviewed-by: Hans de Goede <hdegoede@...hat.com>
Signed-off-by: Hans de Goede <hdegoede@...hat.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/platform/x86/amd/pmf/sps.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/x86/amd/pmf/sps.c b/drivers/platform/x86/amd/pmf/sps.c
index fd448844de206..b2cf62937227c 100644
--- a/drivers/platform/x86/amd/pmf/sps.c
+++ b/drivers/platform/x86/amd/pmf/sps.c
@@ -121,7 +121,8 @@ int amd_pmf_get_pprof_modes(struct amd_pmf_dev *pmf)
 
 int amd_pmf_power_slider_update_event(struct amd_pmf_dev *dev)
 {
-	u8 mode, flag = 0;
+	u8 flag = 0;
+	int mode;
 	int src;
 
 	mode = amd_pmf_get_pprof_modes(dev);
-- 
2.40.1