From patchwork Thu Jun 8 08:23:33 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Carpenter X-Patchwork-Id: 690617 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 871EAC7EE2E for ; Thu, 8 Jun 2023 09:15:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233699AbjFHJPe (ORCPT ); Thu, 8 Jun 2023 05:15:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58556 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234218AbjFHJPd (ORCPT ); Thu, 8 Jun 2023 05:15:33 -0400 Received: from mail-wr1-x434.google.com (mail-wr1-x434.google.com [IPv6:2a00:1450:4864:20::434]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0F89118F for ; Thu, 8 Jun 2023 02:15:32 -0700 (PDT) Received: by mail-wr1-x434.google.com with SMTP id ffacd0b85a97d-30ae141785bso373228f8f.3 for ; Thu, 08 Jun 2023 02:15:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1686215730; x=1688807730; h=content-disposition:mime-version:message-id:subject:cc:to:from:date :from:to:cc:subject:date:message-id:reply-to; bh=3RySa5TKNiSsUD/90w92orRJEIYhEVSGdB85+66FnSA=; b=mpC92LVOdl/5WmkIGe0GW1UkaOKSkWpiVMnE7MxRMUzmduDVvakeDuJbXwzon9xx06 h2kszxa6Q/zZCGN1TUcANr5Qo8yjUN66VlWcHG2bh7+swXyZ2dAuYAlJrqXwxLviZ+LQ nfSLtnAn2NBSeB8TNIQevkWKI/w17xILOPWIuB0I3CZVL2PaJZZO6yucWln3LEk9q1JJ xUYDFwhjSHn95HYqNysv1+b/FWgAiQaxikcffL2lgI1B9tCaagdxH/XBX0VOaHHmY5AY Y8RHdm6BjCVBK5TM5zqasqPXrvU7IUJm+sJjy76yOm/UsX5Ih7s2QtRYNDGe42gu9YmV OPQg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686215730; x=1688807730; h=content-disposition:mime-version:message-id:subject:cc:to:from:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=3RySa5TKNiSsUD/90w92orRJEIYhEVSGdB85+66FnSA=; b=AUYvCxjzO9VvMFilUwONNjv2D5Pn7fM6opNG6nYFGaaEC2ZWx3VsMuRvGOqlDJ4wvB ICk/QPixy7QAmVFvZ7seOiXH+Lpj8amc+Jqwmhsf6Mmpu3vgx/CrXs4rK4cNpz6lszdf EW0zsXr5zVXxGQjwAHG8j0MJ75EDmfziWehSg7NjOtV58hWqllmb3kmrbAkeFVAcQ6tm tgX1AlmIkmrBz/viHdUTBaeTiWFWYT6Sgn1HmZinMCseGzASe3oHNxBMjsvXTTORflMb Zq/fl9kR6y11SPXarLwLB8P2zlFd4jNu6RbKmfh74NKhNyTOhJT4/zoSFNlF69DYPuhq /N0Q== X-Gm-Message-State: AC+VfDyxqXcsD4RbZD40n9EY3hypVHXTZSZOuAWX/zfx8XcT3+0RxAuR e/KstMPzI14C2GxNGoaCARoTig== X-Google-Smtp-Source: ACHHUZ5sHNLLbkCtJHL6hEVSUHaRtgooC4bpxt6UOn69Qv0TvZpAnODCn/1nIOo+cXufx6q67xuXpg== X-Received: by 2002:a5d:4003:0:b0:30a:d747:b357 with SMTP id n3-20020a5d4003000000b0030ad747b357mr6375438wrp.56.1686215730511; Thu, 08 Jun 2023 02:15:30 -0700 (PDT) Received: from localhost ([102.36.222.112]) by smtp.gmail.com with ESMTPSA id b14-20020adfe30e000000b00307a86a4bcesm974061wrj.35.2023.06.08.02.15.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 08 Jun 2023 02:15:29 -0700 (PDT) Date: Thu, 8 Jun 2023 11:23:33 +0300 From: Dan Carpenter To: Rob Clark , Marijn Suijten Cc: Abhinav Kumar , Dmitry Baryshkov , Sean Paul , David Airlie , Daniel Vetter , Jessica Zhang , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, kernel-janitors@vger.kernel.org Subject: [PATCH v2] drm/msm/dpu: tidy up some error checking Message-ID: <907e4b37-b9a2-4e14-bff2-ec2a0aa45965@moroto.mountain> MIME-Version: 1.0 Content-Disposition: inline X-Mailer: git-send-email haha only kidding Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org The "vsync_hz" variable is unsigned int so it can't be less than zero. The dpu_kms_get_clk_rate() function used to return a u64 but I previously changed it to return an unsigned long and zero on error so it matches clk_get_rate(). Change the "vsync_hz" type to unsigned long as well and change the error checking to check for zero instead of negatives. This change does not affect runtime at all beyond a minor adjustment to the debug output. Suggested-by: Marijn Suijten Signed-off-by: Dan Carpenter Reviewed-by: Marijn Suijten --- v2: update the debug output drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c index 4f8c9187f76d..27a823c72c06 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c @@ -323,8 +323,8 @@ static void dpu_encoder_phys_cmd_tearcheck_config( to_dpu_encoder_phys_cmd(phys_enc); struct dpu_hw_tear_check tc_cfg = { 0 }; struct drm_display_mode *mode; + unsigned long vsync_hz; bool tc_enable = true; - u32 vsync_hz; struct dpu_kms *dpu_kms; if (phys_enc->has_intf_te) { @@ -359,9 +359,8 @@ static void dpu_encoder_phys_cmd_tearcheck_config( * frequency divided by the no. of rows (lines) in the LCDpanel. */ vsync_hz = dpu_kms_get_clk_rate(dpu_kms, "vsync"); - if (vsync_hz <= 0) { - DPU_DEBUG_CMDENC(cmd_enc, "invalid - vsync_hz %u\n", - vsync_hz); + if (!vsync_hz) { + DPU_DEBUG_CMDENC(cmd_enc, "no vsync clock\n"); return; } @@ -381,7 +380,7 @@ static void dpu_encoder_phys_cmd_tearcheck_config( tc_cfg.rd_ptr_irq = mode->vdisplay + 1; DPU_DEBUG_CMDENC(cmd_enc, - "tc vsync_clk_speed_hz %u vtotal %u vrefresh %u\n", + "tc vsync_clk_speed_hz %lu vtotal %u vrefresh %u\n", vsync_hz, mode->vtotal, drm_mode_vrefresh(mode)); DPU_DEBUG_CMDENC(cmd_enc, "tc enable %u start_pos %u rd_ptr_irq %u\n",