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 (file)
--- 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;