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

[Evan Quan]

Supplement of previous fix "2d873f24dfaf drm/amdgpu/pm: Account for extra
separator characters in sysfs interface".

Change-Id: Ie9e9a78ad8530ba4b46ea27e28559d5dcda5c033
Signed-off-by: Evan Quan <evan.q...@amd.com>
---
 drivers/gpu/drm/amd/pm/amdgpu_pm.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/amd/pm/amdgpu_pm.c 
b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
index ba1539f6e0ce..ac150e63dd25 100644
--- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
@@ -1866,6 +1866,8 @@ 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;
-- 
2.29.0

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