From patchwork Sat May 11 14:47:13 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sui Jingfeng X-Patchwork-Id: 13662402 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 46014C04FFE for ; Sat, 11 May 2024 14:47:30 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id CDEED10E16A; Sat, 11 May 2024 14:47:28 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (1024-bit key; unprotected) header.d=linux.dev header.i=@linux.dev header.b="d3yVAzsb"; dkim-atps=neutral Received: from out-187.mta0.migadu.com (out-187.mta0.migadu.com [91.218.175.187]) by gabe.freedesktop.org (Postfix) with ESMTPS id E307710E16A for ; Sat, 11 May 2024 14:47:26 +0000 (UTC) X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1715438843; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=7yOqpZKsUKDB1a0tUagb9Qur9MXv1mW2mjyu4D7NkSE=; b=d3yVAzsbzdpSfkT78RVPvEMqZ/aV+HAl9d9PnPMHjixfIjK6vovt1sjtxrjX2d616YAyM5 ADA3b26o/ZqjrQrx87t3Y+jmSJKtvpgShsFqrIbQ/zGiv41dlCNZieyMLFQyGjbiPzsav2 LyALftzDxf8kQ08yANNcgXO61YsNT0k= From: Sui Jingfeng To: Maxime Ripard Cc: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Thomas Zimmermann , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Sui Jingfeng Subject: [PATCH] drm/bridge: synopsys: dw-mipi-dsi: Remove a redundant check on existence of bridge->encoder Date: Sat, 11 May 2024 22:47:13 +0800 Message-ID: <20240511144713.325156-1-sui.jingfeng@linux.dev> MIME-Version: 1.0 X-Migadu-Flow: FLOW_OUT X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" In the dw_mipi_dsi_bridge_attach() function, the check on the existence of bridge->encoder is not necessary, as it has already been done in the drm_bridge_attach() function. And the check on the drm bridge core happens before check in the implementation. Hence, it is guaranteed that the .encoder member of the struct drm_bridge is not NULL when dw_mipi_dsi_bridge_attach() function gets called. Remove the redundant checking codes "if (!bridge->encoder) { ... }". Signed-off-by: Sui Jingfeng Reviewed-by: Laurent Pinchart --- drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c index 824fb3c65742..c4e9d96933dc 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c @@ -1071,11 +1071,6 @@ static int dw_mipi_dsi_bridge_attach(struct drm_bridge *bridge, { struct dw_mipi_dsi *dsi = bridge_to_dsi(bridge); - if (!bridge->encoder) { - DRM_ERROR("Parent encoder object not found\n"); - return -ENODEV; - } - /* Set the encoder type as caller does not know it */ bridge->encoder->encoder_type = DRM_MODE_ENCODER_DSI;