From d9a69fe512c5f032556764041760e8d5098fac26 Mon Sep 17 00:00:00 2001 From: Candice Li Date: Tue, 16 Nov 2021 14:13:11 +0800 Subject: [PATCH] drm/amdgpu: Add recovery_lock to save bad pages function Fix race condition failure during UMC UE injection. Signed-off-by: Candice Li Reviewed-by: Tao Zhou Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c index 08133de21fdd6..53b957a5b9a65 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c @@ -1935,9 +1935,11 @@ int amdgpu_ras_save_bad_pages(struct amdgpu_device *adev) if (!con || !con->eh_data) return 0; + mutex_lock(&con->recovery_lock); control = &con->eeprom_control; data = con->eh_data; save_count = data->count - control->ras_num_recs; + mutex_unlock(&con->recovery_lock); /* only new entries are saved */ if (save_count > 0) { if (amdgpu_ras_eeprom_append(control,