From patchwork Tue Apr 19 16:20:29 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 563433 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B9B35C433F5 for ; Tue, 19 Apr 2022 16:20:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1354558AbiDSQXU (ORCPT ); Tue, 19 Apr 2022 12:23:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34470 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1354581AbiDSQXS (ORCPT ); Tue, 19 Apr 2022 12:23:18 -0400 Received: from mail-lj1-x22f.google.com (mail-lj1-x22f.google.com [IPv6:2a00:1450:4864:20::22f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8D02B2315B for ; Tue, 19 Apr 2022 09:20:35 -0700 (PDT) Received: by mail-lj1-x22f.google.com with SMTP id y11so3626639ljh.5 for ; Tue, 19 Apr 2022 09:20:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=VXeyTFTsfoYPFo06SZsNQ99dRK1p3DG4c0ZdovqUbmc=; b=LlSwrxiPNMbBWlTQRPNdY0n/WTrx7v4OLM1b9B0AdYIzdT66DCpNAY1SH+iygwDyjE MbKrYNyJ0pAPF560Z2eTWPDgql9FneKUBBs4Pnpeaa7m5bCQMPv6JdeRpUqD8kZpCYBo 2uNIf9xO84BCBRbyiiExxvhkqY3+iGuQSgfUjynB0v7zPry9Pt5Y60clo8lN7r/QQ0Z6 YHbjSeCOvnzlhWW0WP97FQyM2h2jx7DciH4doNI5WYXMTnt9l4DyHi0NyjU2op7IS8N3 dDM9+ci1gYwox8Uy86qtdMPxAYCafgRj5Fu+tpnxcBjIWgakE32uLK6FTb/tEWl+/9zK 2hbA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=VXeyTFTsfoYPFo06SZsNQ99dRK1p3DG4c0ZdovqUbmc=; b=YbmKzNKHardM5ro3VVghvUbUoHCvO1shpaBjnLcKxxU5GeRbphY7oRms9xoP7wuuJf b5vq1UvtUEBCR+hxjEdXaJ3FNi8OlW0VdqnBf90I0xcrfpm1ueXXunYaQfV9QjNKQ7SK SSuEeUlMWM9A6AvTxqcSN4knzrcpew8oOJH8gH6z8gVRxgtGT0gdqqQlMxEDeM46LxpY f/4nkcdb79kTSKIcTKmO5xY+pQxvnALPkNWimQtgac0SNbbGnWByB6ogpWPIvKnBuA39 roYfQNA9O5wN9euw/FZ4hF4uVeNNEV3S6VbQ4rku+z4M6WqxaYe8XaLSA45PDONnLlHx l2IA== X-Gm-Message-State: AOAM5327OJ5txw+Ulog9/75XxIoJTNJzM1NGf6lYxuxks7jTXp6YQ2/9 A58AWQkU3sWwvkSU3SPX2QP2dQ== X-Google-Smtp-Source: ABdhPJxwdScriRJx3uR0TFUsQrgBLKqdu/LnEG3C8Zkr02oQlpUTup8+q24MTTMVTCgO4xXB5kDVFw== X-Received: by 2002:a2e:7002:0:b0:249:b34a:69d3 with SMTP id l2-20020a2e7002000000b00249b34a69d3mr10678980ljc.474.1650385233468; Tue, 19 Apr 2022 09:20:33 -0700 (PDT) Received: from eriador.lan ([37.153.55.125]) by smtp.gmail.com with ESMTPSA id k15-20020a2e92cf000000b002493cc687f3sm1495153ljh.45.2022.04.19.09.20.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 Apr 2022 09:20:33 -0700 (PDT) From: Dmitry Baryshkov To: Bjorn Andersson , Rob Clark , Sean Paul , Abhinav Kumar Cc: Stephen Boyd , David Airlie , Daniel Vetter , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org Subject: [PATCH v2 2/3] drm/msm/dpu: fix error handling around dpu_hw_vbif_init Date: Tue, 19 Apr 2022 19:20:29 +0300 Message-Id: <20220419162030.1287562-3-dmitry.baryshkov@linaro.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220419162030.1287562-1-dmitry.baryshkov@linaro.org> References: <20220419162030.1287562-1-dmitry.baryshkov@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Using IS_ERR_OR_NULL() together with PTR_ERR() is a typical mistake. If the value is NULL, then the function will return 0 instead of a proper return code. Moreover dpu_hw_vbif_init() function can not return NULL. So, replace corresponding IS_ERR_OR_NULL() call with IS_ERR(). Reviewed-by: Abhinav Kumar Signed-off-by: Dmitry Baryshkov --- drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c index aadf032a190b..d38c55f9f003 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c @@ -1102,10 +1102,8 @@ static int dpu_kms_hw_init(struct msm_kms *kms) dpu_kms->hw_vbif[vbif_idx] = dpu_hw_vbif_init(vbif_idx, dpu_kms->vbif[vbif_idx], dpu_kms->catalog); - if (IS_ERR_OR_NULL(dpu_kms->hw_vbif[vbif_idx])) { + if (IS_ERR(dpu_kms->hw_vbif[vbif_idx])) { rc = PTR_ERR(dpu_kms->hw_vbif[vbif_idx]); - if (!dpu_kms->hw_vbif[vbif_idx]) - rc = -EINVAL; DPU_ERROR("failed to init vbif %d: %d\n", vbif_idx, rc); dpu_kms->hw_vbif[vbif_idx] = NULL; goto power_error;