linux-kernel - [PATCH v2] accel/amdxdna: Return error when setting clock failed for npu1

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-next>] [day] [month] [year] [list]

Message-ID: <20250109194811.499505-1-lizhi.hou@amd.com>
Date: Thu, 9 Jan 2025 11:48:11 -0800
From: Lizhi Hou <lizhi.hou@....com>
To: <ogabbay@...nel.org>, <quic_jhugo@...cinc.com>,
	<dri-devel@...ts.freedesktop.org>
CC: Lizhi Hou <lizhi.hou@....com>, <linux-kernel@...r.kernel.org>,
	<min.ma@....com>, <max.zhen@....com>, <sonal.santan@....com>,
	<king.tam@....com>, <mario.limonciello@....com>, Dan Carpenter
	<dan.carpenter@...aro.org>
Subject: [PATCH v2] accel/amdxdna: Return error when setting clock failed for npu1

Due to miss returning error when setting clock, the smatch static
checker reports warning:
  drivers/accel/amdxdna/aie2_smu.c:68 npu1_set_dpm()
  error: uninitialized symbol 'freq'.

Fixes: f4d7b8a6bc8c ("accel/amdxdna: Enhance power management settings")
Reported-by: Dan Carpenter <dan.carpenter@...aro.org>
Closes: https://lore.kernel.org/dri-devel/202267d0-882e-4593-b58d-be9274592f9b@stanley.mountain/
Signed-off-by: Lizhi Hou <lizhi.hou@....com>
---
 drivers/accel/amdxdna/aie2_smu.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/accel/amdxdna/aie2_smu.c b/drivers/accel/amdxdna/aie2_smu.c
index 73388443c676..d303701b0ded 100644
--- a/drivers/accel/amdxdna/aie2_smu.c
+++ b/drivers/accel/amdxdna/aie2_smu.c
@@ -64,6 +64,7 @@ int npu1_set_dpm(struct amdxdna_dev_hdl *ndev, u32 dpm_level)
 	if (ret) {
 		XDNA_ERR(ndev->xdna, "Set npu clock to %d failed, ret %d\n",
 			 ndev->priv->dpm_clk_tbl[dpm_level].npuclk, ret);
+		return ret;
 	}
 	ndev->npuclk_freq = freq;
 
@@ -72,6 +73,7 @@ int npu1_set_dpm(struct amdxdna_dev_hdl *ndev, u32 dpm_level)
 	if (ret) {
 		XDNA_ERR(ndev->xdna, "Set h clock to %d failed, ret %d\n",
 			 ndev->priv->dpm_clk_tbl[dpm_level].hclk, ret);
+		return ret;
 	}
 	ndev->hclk_freq = freq;
 	ndev->dpm_level = dpm_level;
-- 
2.34.1