drm/amdgpu: Print once if RAS unsupported

MESA polls for errors every 2-3 seconds. Printing with dev_info() causes
the dmesg log to fill up with the same message, e.g,

[18028.206676] amdgpu 0000:0b:00.0: amdgpu: df doesn't config ras function.

Make it dev_dbg_once(), as it isn't something correctible during boot or
thereafter, so printing just once is sufficient. Also sanitize the message.

Cc: Alex Deucher <Alexander.Deucher@amd.com>
Cc: Hawking Zhang <Hawking.Zhang@amd.com>
Cc: John Clements <john.clements@amd.com>
Cc: Tao Zhou <tao.zhou1@amd.com>
Cc: yipechai <YiPeng.Chai@amd.com>
Fixes: 8b0fb0e9 ("drm/amdgpu: Modify gfx block to fit for the unified ras block data and ops")
Signed-off-by: Luben Tuikov <luben.tuikov@amd.com>
Reviewed-by: Alex Deucher <Alexander.Deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c

@@ -952,8 +952,8 @@ int amdgpu_ras_query_error_status(struct amdgpu_device *adev,
 	} else {
 		block_obj = amdgpu_ras_get_ras_block(adev, info->head.block, 0);
 		if (!block_obj || !block_obj->hw_ops)   {
-			dev_info(adev->dev, "%s doesn't config ras function.\n",
-					get_ras_block_str(&info->head));
+			dev_dbg_once(adev->dev, "%s doesn't config RAS function\n",
+				     get_ras_block_str(&info->head));
 			return -EINVAL;
 		}
 
@@ -1028,8 +1028,8 @@ int amdgpu_ras_reset_error_status(struct amdgpu_device *adev,
 		return -EINVAL;
 
 	if (!block_obj || !block_obj->hw_ops)   {
-		dev_info(adev->dev, "%s doesn't config ras function.\n",
-				ras_block_str(block));
+		dev_dbg_once(adev->dev, "%s doesn't config RAS function\n",
+			     ras_block_str(block));
 		return -EINVAL;
 	}
 
@@ -1066,8 +1066,8 @@ int amdgpu_ras_error_inject(struct amdgpu_device *adev,
 		return -EINVAL;
 
 	if (!block_obj || !block_obj->hw_ops)	{
-		dev_info(adev->dev, "%s doesn't config ras function.\n",
-					get_ras_block_str(&info->head));
+		dev_dbg_once(adev->dev, "%s doesn't config RAS function\n",
+			     get_ras_block_str(&info->head));
 		return -EINVAL;
 	}
 
@@ -1717,8 +1717,8 @@ static void amdgpu_ras_error_status_query(struct amdgpu_device *adev,
 					info->head.sub_block_index);
 
 	if (!block_obj || !block_obj->hw_ops) {
-		dev_info(adev->dev, "%s doesn't config ras function.\n",
-			get_ras_block_str(&info->head));
+		dev_dbg_once(adev->dev, "%s doesn't config RAS function\n",
+			     get_ras_block_str(&info->head));
 		return;
 	}