From patchwork Thu Feb 15 08:53:14 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: AngeloGioacchino Del Regno X-Patchwork-Id: 13557777 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 B274BC4829E for ; Thu, 15 Feb 2024 10:01:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=d+ONfmuo5Lr0xxPgOm9kyd2dJ7/ASKv4kBPH4uBQLG0=; b=epqnLe4V0BBfZL p6gco34z5hiT59RGe1UAJTnlP4YtinEHMp/bu4Eq5FL4Zk0U5IZktK1TZHwMckveWwypr76vlRn9W CtbCjWIJIYjoHdZ4j2MLQKUFn41smuKAIULk9B+nMCpR9oclPY+yih3gROMCDVg+rac6Hy6VtWZ4w japUntHXErrB1NA6yTImUmBXh2LOCIy20zzM1qdDpITgnclyifQrZecAI28AR/fw0AeUYzW0OnqB3 0P9U4uH8F3aKeDeO/25hUx6OGglL1my7krcKfj46qJP1SH/kgKTyCWDeKntrISTvGYhausKhMyb/U E4ldHijt5ktC6S/UQUxQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1raYY2-0000000FftA-0NZS; Thu, 15 Feb 2024 10:00:54 +0000 Received: from madrid.collaboradmins.com ([46.235.227.194]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1raXUn-0000000FOtU-2zsP; Thu, 15 Feb 2024 08:53:31 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1707987208; bh=jewx2tbyoHc8XkBckJRK6kMqgXG1NMO8tumrU7DXJMM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qGLdn6Dx2Tsr2gpHcGQbcAKqsCLbT7fgh4ZWv5StJ65+WIWsMWBAvd/mOB9cMgGPl AVg+t2ygVDNo65HKoUB16F61w8045yCnUM38NyBPE5XCYSVlnOpBTv0aq6qiPd7gmb pCTFuW3rQNQ1cNXaH+jSfL7v8qYKGGU05+F6z/WVGkmm11EbbAVxBQ5at3MXfklcsx /FpqjTufwuWUJppN42Q2GsR18Js4SVIz3P9Ig2TpL7mhnO4WR0W2/FNj/tlR9Qj/nE rUInpEfhPnNr18tpTwGtxVu0s0HOv0qGI6tH+/BKsDNr/OnFjVx55cgfDpiyFGLF6k IinOiVV42fMdw== Received: from IcarusMOD.eternityproject.eu (cola.collaboradmins.com [195.201.22.229]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: kholk11) by madrid.collaboradmins.com (Postfix) with ESMTPSA id 836D737820B2; Thu, 15 Feb 2024 08:53:27 +0000 (UTC) From: AngeloGioacchino Del Regno To: chunkuang.hu@kernel.org Cc: fshao@chromium.org, p.zabel@pengutronix.de, airlied@gmail.com, daniel@ffwll.ch, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel@collabora.com, Alexandre Mergnat Subject: [PATCH v6 7/9] drm/mediatek: dsi: Simplify with dev_err_probe and remove gotos Date: Thu, 15 Feb 2024 09:53:14 +0100 Message-ID: <20240215085316.56835-8-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240215085316.56835-1-angelogioacchino.delregno@collabora.com> References: <20240215085316.56835-1-angelogioacchino.delregno@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240215_005329_940050_07CCD301 X-CRM114-Status: GOOD ( 12.24 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Most of the functions that are called in the probe callback are devm managed, or all but mipi_dsi_host_register(): simplify the probe function's error paths with dev_err_probe() and remove the lonely instance of `goto err_unregister_host` by just directly calling the mipi_dsi_host_unregister() function in the devm_request_irq() error path, allowing to also remove the same label. Reviewed-by: Alexandre Mergnat Signed-off-by: AngeloGioacchino Del Regno --- drivers/gpu/drm/mediatek/mtk_dsi.c | 60 +++++++++--------------------- 1 file changed, 18 insertions(+), 42 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c index b3dd6251d611..195ff4dfc3a3 100644 --- a/drivers/gpu/drm/mediatek/mtk_dsi.c +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c @@ -1117,64 +1117,44 @@ static int mtk_dsi_probe(struct platform_device *pdev) dsi->driver_data = of_device_get_match_data(dev); dsi->engine_clk = devm_clk_get(dev, "engine"); - if (IS_ERR(dsi->engine_clk)) { - ret = PTR_ERR(dsi->engine_clk); + if (IS_ERR(dsi->engine_clk)) + return dev_err_probe(dev, PTR_ERR(dsi->engine_clk), + "Failed to get engine clock\n"); - if (ret != -EPROBE_DEFER) - dev_err(dev, "Failed to get engine clock: %d\n", ret); - return ret; - } dsi->digital_clk = devm_clk_get(dev, "digital"); - if (IS_ERR(dsi->digital_clk)) { - ret = PTR_ERR(dsi->digital_clk); - - if (ret != -EPROBE_DEFER) - dev_err(dev, "Failed to get digital clock: %d\n", ret); - return ret; - } + if (IS_ERR(dsi->digital_clk)) + return dev_err_probe(dev, PTR_ERR(dsi->digital_clk), + "Failed to get digital clock\n"); dsi->hs_clk = devm_clk_get(dev, "hs"); - if (IS_ERR(dsi->hs_clk)) { - ret = PTR_ERR(dsi->hs_clk); - dev_err(dev, "Failed to get hs clock: %d\n", ret); - return ret; - } + if (IS_ERR(dsi->hs_clk)) + return dev_err_probe(dev, PTR_ERR(dsi->hs_clk), "Failed to get hs clock\n"); regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); dsi->regs = devm_ioremap_resource(dev, regs); - if (IS_ERR(dsi->regs)) { - ret = PTR_ERR(dsi->regs); - dev_err(dev, "Failed to ioremap memory: %d\n", ret); - return ret; - } + if (IS_ERR(dsi->regs)) + return dev_err_probe(dev, PTR_ERR(dsi->regs), "Failed to ioremap memory\n"); dsi->phy = devm_phy_get(dev, "dphy"); - if (IS_ERR(dsi->phy)) { - ret = PTR_ERR(dsi->phy); - dev_err(dev, "Failed to get MIPI-DPHY: %d\n", ret); - return ret; - } + if (IS_ERR(dsi->phy)) + return dev_err_probe(dev, PTR_ERR(dsi->phy), "Failed to get MIPI-DPHY\n"); irq_num = platform_get_irq(pdev, 0); - if (irq_num < 0) { - ret = irq_num; - return ret; - } + if (irq_num < 0) + return irq_num; dsi->host.ops = &mtk_dsi_ops; dsi->host.dev = dev; ret = mipi_dsi_host_register(&dsi->host); - if (ret < 0) { - dev_err(dev, "failed to register DSI host: %d\n", ret); - return ret; - } + if (ret < 0) + return dev_err_probe(dev, ret, "Failed to register DSI host\n"); ret = devm_request_irq(&pdev->dev, irq_num, mtk_dsi_irq, IRQF_TRIGGER_NONE, dev_name(&pdev->dev), dsi); if (ret) { - dev_err(&pdev->dev, "failed to request mediatek dsi irq\n"); - goto err_unregister_host; + mipi_dsi_host_unregister(&dsi->host); + return dev_err_probe(&pdev->dev, ret, "Failed to request DSI irq\n"); } init_waitqueue_head(&dsi->irq_wait_queue); @@ -1186,10 +1166,6 @@ static int mtk_dsi_probe(struct platform_device *pdev) dsi->bridge.type = DRM_MODE_CONNECTOR_DSI; return 0; - -err_unregister_host: - mipi_dsi_host_unregister(&dsi->host); - return ret; } static void mtk_dsi_remove(struct platform_device *pdev)