[PATCH] drm/amd/powerplay: avoid deadlock on Vega20 swSMU routine

[Xu, Feifei]

Reviewed-by: Feifei Xu <Feifei.Xu at amd.com>

-----Original Message-----
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Evan Quan
Sent: Monday, December 30, 2019 6:40 PM
To: amd-gfx at lists.freedesktop.org
Cc: Quan, Evan <Evan.Quan at amd.com>
Subject: [PATCH] drm/amd/powerplay: avoid deadlock on Vega20 swSMU routine

The lock required was already hold by its parent API.

Change-Id: I2ffe63d2016a2e274d54634cd8f8c51cca8b3a1c
Signed-off-by: Evan Quan <evan.quan at amd.com>
---
 drivers/gpu/drm/amd/powerplay/amdgpu_smu.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
index bd3dbd1a0ad3..4b686f0af538 100644
--- a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
@@ -2279,13 +2279,9 @@ int smu_set_active_display_count(struct smu_context *smu, uint32_t count)  {
 	int ret = 0;
 
-	mutex_lock(&smu->mutex);
-
 	if (smu->ppt_funcs->set_active_display_count)
 		ret = smu->ppt_funcs->set_active_display_count(smu, count);
 
-	mutex_unlock(&smu->mutex);
-
 	return ret;
 }
 
--
2.24.0

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