From 87004abfbc27261edd15716515d89ab42198b405 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Thu, 30 Jul 2020 11:02:30 -0400
Subject: Revert "drm/amdgpu: Fix NULL dereference in dpm sysfs handlers"
Git-commit: 2456c290a7889be492cb96092b62d16c11176f72
Patch-mainline: v5.10-rc1
References: bsc#1113956
This regressed some working configurations so revert it. Will
fix this properly for 5.9 and backport then.
This reverts commit 38e0c89a19fd13f28d2b4721035160a3e66e270b.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
@@ -514,7 +514,8 @@ static ssize_t amdgpu_set_pp_od_clk_volt
while (isspace(*++tmp_str));
- while ((sub_str = strsep(&tmp_str, delimiter)) != NULL) {
+ while (tmp_str[0]) {
+ sub_str = strsep(&tmp_str, delimiter);
ret = kstrtol(sub_str, 0, ¶meter[parameter_size]);
if (ret)
return -EINVAL;
@@ -614,7 +615,8 @@ static ssize_t amdgpu_read_mask(const ch
memcpy(buf_cpy, buf, bytes);
buf_cpy[bytes] = '\0';
tmp = buf_cpy;
- while ((sub_str = strsep(&tmp, delimiter)) != NULL) {
+ while (tmp[0]) {
+ sub_str = strsep(&tmp, delimiter);
if (strlen(sub_str)) {
ret = kstrtol(sub_str, 0, &level);
if (ret)
@@ -865,7 +867,8 @@ static ssize_t amdgpu_set_pp_power_profi
i++;
memcpy(buf_cpy, buf, count-i);
tmp_str = buf_cpy;
- while ((sub_str = strsep(&tmp_str, delimiter)) != NULL) {
+ while (tmp_str[0]) {
+ sub_str = strsep(&tmp_str, delimiter);
ret = kstrtol(sub_str, 0, ¶meter[parameter_size]);
if (ret) {
count = -EINVAL;