linux-kernel - [PATCH 5.11 090/152] drm/amdgpu/vangogh: dont check for dpm in is_dpm

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20210405085037.173931236@linuxfoundation.org>
Date:   Mon,  5 Apr 2021 10:53:59 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Zhan Liu <zhan.liu@....com>,
        Evan Quan <evan.quan@....com>,
        Alex Deucher <alexander.deucher@....com>
Subject: [PATCH 5.11 090/152] drm/amdgpu/vangogh: dont check for dpm in is_dpm_running when in suspend

From: Alex Deucher <alexander.deucher@....com>

commit 6951c3e4a260f65a16433833d2511e8796dc8625 upstream.

Do the same thing we do for Renoir.  We can check, but since
the sbios has started DPM, it will always return true which
causes the driver to skip some of the SMU init when it shouldn't.

Reviewed-by: Zhan Liu <zhan.liu@....com>
Acked-by: Evan Quan <evan.quan@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Cc: stable@...r.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/gpu/drm/amd/pm/swsmu/smu11/vangogh_ppt.c |    5 +++++
 1 file changed, 5 insertions(+)

--- a/drivers/gpu/drm/amd/pm/swsmu/smu11/vangogh_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/vangogh_ppt.c
@@ -388,10 +388,15 @@ static int vangogh_get_allowed_feature_m
 
 static bool vangogh_is_dpm_running(struct smu_context *smu)
 {
+	struct amdgpu_device *adev = smu->adev;
 	int ret = 0;
 	uint32_t feature_mask[2];
 	uint64_t feature_enabled;
 
+	/* we need to re-init after suspend so return false */
+	if (adev->in_suspend)
+		return false;
+
 	ret = smu_cmn_get_enabled_32_bits_mask(smu, feature_mask, 2);
 
 	if (ret)