From: Evan Quan <evan.quan@amd.com>
Date: Thu, 21 Jan 2021 08:24:02 +0000 (+0800)
Subject: drm/amd/pm: correct string parsing for extra separator characters case
X-Git-Tag: v5.15~1634^2~9^2~42
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c2efbc3f9dbef72054d85913135fae7f99ad6b25;p=platform%2Fkernel%2Flinux-starfive.git

drm/amd/pm: correct string parsing for extra separator characters case

Supplement of previous fix.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/pm/amdgpu_pm.c b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
index bbfb966..0d37c84 100644
--- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
@@ -1870,6 +1870,8 @@ static ssize_t amdgpu_set_pp_power_profile_mode(struct device *dev,
 		memcpy(buf_cpy, buf, count-i);
 		tmp_str = buf_cpy;
 		while ((sub_str = strsep(&tmp_str, delimiter)) != NULL) {
+			if (strlen(sub_str) == 0)
+				continue;
 			ret = kstrtol(sub_str, 0, &parameter[parameter_size]);
 			if (ret)
 				return -EINVAL;