The following commit has been merged into the perf/urgent branch of tip:

Commit-ID: ffdf9f8550ee675d4270bbaa5721a6f3116d137e Gitweb: https://git.kernel.org/tip/ffdf9f8550ee675d4270bbaa5721a6f3116d137e Author: Alex Deucher alexander.deucher@amd.com AuthorDate: Thu, 30 Jul 2020 11:02:30 -04:00 Committer: Greg Kroah-Hartman gregkh@linuxfoundation.org CommitterDate: Sat, 17 Oct 2020 08:31:22 +02:00

Revert "drm/amdgpu: Fix NULL dereference in dpm sysfs handlers"

commit 2456c290a7889be492cb96092b62d16c11176f72 upstream.

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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c index e4dbf14..5bf4212 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c @@ -796,7 +796,8 @@ static ssize_t amdgpu_set_pp_od_clk_voltage(struct device *dev, tmp_str++; 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, &parameter[parameter_size]); if (ret) return -EINVAL; @@ -1066,7 +1067,8 @@ static ssize_t amdgpu_read_mask(const char *buf, size_t count, uint32_t *mask) 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) @@ -1695,7 +1697,8 @@ static ssize_t amdgpu_set_pp_power_profile_mode(struct device *dev, 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, &parameter[parameter_size]); if (ret) return -EINVAL;