From 3bd532692d93a9c72f4f11e38437b30c0e13007f Mon Sep 17 00:00:00 2001
From: Wang Xiayang <xywang.sjtu@sjtu.edu.cn>
Date: Mon, 15 Jul 2019 16:53:01 +0800
Subject: [PATCH] drm/amdgpu: replace simple_strtol() by kstrtou32()
The simple_strtol() function is deprecated. kstrto[l,u32]() is
the correct replacement as it can properly handle overflows.
This patch replaces the deprecated simple_strtol() use introduced recently.
As clk is of type uint32_t, we are safe to use kstrtou32().
It is also safe to return zero on string parsing error,
similar to the case of returning zero if buf is empty in parse_clk().
Fixes: bb5a2bdf36a8 ("drm/amdgpu: support dpm level modification under virtualization v3")
Signed-off-by: Wang Xiayang <xywang.sjtu@sjtu.edu.cn>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
index 07a7e3820b7ba..59dd204498c52 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
@@ -390,7 +390,8 @@ static uint32_t parse_clk(char *buf, bool min)
if (!ptr)
break;
ptr+=2;
- clk = simple_strtoul(ptr, NULL, 10);
+ if (kstrtou32(ptr, 10, &clk))
+ return 0;
} while (!min);
return clk * 100;
--
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