From patchwork Tue Aug 22 16:16:16 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bryan O'Donoghue X-Patchwork-Id: 717133 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 D379EEE4996 for ; Tue, 22 Aug 2023 16:16:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237588AbjHVQQm (ORCPT ); Tue, 22 Aug 2023 12:16:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51854 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237579AbjHVQQi (ORCPT ); Tue, 22 Aug 2023 12:16:38 -0400 Received: from mail-wm1-x32b.google.com (mail-wm1-x32b.google.com [IPv6:2a00:1450:4864:20::32b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9CC1AE40 for ; Tue, 22 Aug 2023 09:16:36 -0700 (PDT) Received: by mail-wm1-x32b.google.com with SMTP id 5b1f17b1804b1-3fed963273cso23278815e9.1 for ; Tue, 22 Aug 2023 09:16:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1692720995; x=1693325795; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=iJ2VKKNJcWBxsnE8fA4GSZFE3NOH8fxJi08OtAhPrEw=; b=tIDClvU//nBPMTdJlHk2CT/TMWkfyIhLDPLu4+5XBURuc6RdJ/SkzIMx3jZpdSK14l FptSX8duiC0WMwYg0mNlnmvYTEAM49cafgMwNq9teJr5rNHYBTriqsRtjlOieLZq+NU5 MIhjZjg+oanc59XzBCaL0xbYKg+T9IJY0Vy1lBA4zIF6d190bqsy/N3KGr+CUlkOJ9dk GuGRA7khNsV/kgLjw8Ba3FcP9Jq/zk+VME+L33vDKcMza7WyDas2Ha8igxAHBwt04XmY oPOMzArb0uZok9P8jp9O7ehgdT5Z7/UoQqDe7YvcjJXhYRRqpp/wA5B4lGvbI44krfcp sbyA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1692720995; x=1693325795; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=iJ2VKKNJcWBxsnE8fA4GSZFE3NOH8fxJi08OtAhPrEw=; b=geUcMzl2qioqCLIO/S9lu/uTQClyVm2TCkzfcPwIbx4KVSKX40O+R5U//tNjCDFrBW CS/uwGHMs2qmlRlHowmoOfIMIJed27baux6uxI/onkMaM+Gc4VHiwH9fTx8L3n+AxXeC FTRHunRsScL+CfsTQoxvV56e8NBiBul/UM14qt7W33aZCg4plMYo5LFqfLHFiIK3S9/s DdhRATLLZSm263jezJBwCtxOu5KW6TyyGtxegDwY9Mfbl2zxvPa4wblx9SicYi9YD07A GuObqzF8LJAlLSWyvIUuxnPpB1HHt7LndSOZFsgDXm45Nd4c8+frP8YrCGim4ZkbVttI 85oA== X-Gm-Message-State: AOJu0YxSq9fAa5/XlhEA/OS9qbKVMxaRo9ItI2744I0mfBf9y/zvaafl TWh37QIAqmJAFIa7fxcp1B4Dxw== X-Google-Smtp-Source: AGHT+IF0P/tGXfuORLiqfSIShYCcmVarjae6QmfjI8GMSwjt1V0vb+MYVmQcn/8l1H099oZIh40PiA== X-Received: by 2002:a1c:6a16:0:b0:3fe:1c10:8d04 with SMTP id f22-20020a1c6a16000000b003fe1c108d04mr7447740wmc.19.1692720995134; Tue, 22 Aug 2023 09:16:35 -0700 (PDT) Received: from sagittarius-a.chello.ie (188-141-3-169.dynamic.upc.ie. [188.141.3.169]) by smtp.gmail.com with ESMTPSA id t23-20020a7bc3d7000000b003fe1fe56202sm16516130wmj.33.2023.08.22.09.16.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 22 Aug 2023 09:16:34 -0700 (PDT) From: Bryan O'Donoghue To: rfoss@kernel.org, todor.too@gmail.com, bryan.odonoghue@linaro.org, agross@kernel.org, andersson@kernel.org, konrad.dybcio@linaro.org, mchehab@kernel.org, hverkuil-cisco@xs4all.nl, laurent.pinchart@ideasonboard.com, sakari.ailus@linux.intel.com, andrey.konovalov@linaro.org Cc: linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH v1 5/9] media: qcom: camss: Fix VFE-480 vfe_disable_output() Date: Tue, 22 Aug 2023 17:16:16 +0100 Message-ID: <20230822161620.1915110-6-bryan.odonoghue@linaro.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230822161620.1915110-1-bryan.odonoghue@linaro.org> References: <20230822161620.1915110-1-bryan.odonoghue@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org vfe-480 is copied from vfe-17x and has the same racy idle timeout bug as in 17x. Fix the vfe_disable_output() logic to no longer be racy and to conform to the 17x way of quiescing and then resetting the VFE. Fixes: 4edc8eae715c ("media: camss: Add initial support for VFE hardware version Titan 480") Cc: stable@vger.kernel.org Signed-off-by: Bryan O'Donoghue --- .../media/platform/qcom/camss/camss-vfe-480.c | 19 +++---------------- 1 file changed, 3 insertions(+), 16 deletions(-) diff --git a/drivers/media/platform/qcom/camss/camss-vfe-480.c b/drivers/media/platform/qcom/camss/camss-vfe-480.c index f70aad2e8c237..a64d660abc538 100644 --- a/drivers/media/platform/qcom/camss/camss-vfe-480.c +++ b/drivers/media/platform/qcom/camss/camss-vfe-480.c @@ -334,28 +334,15 @@ static int vfe_disable_output(struct vfe_line *line) struct vfe_output *output = &line->output; unsigned long flags; unsigned int i; - bool done; - int timeout = 0; - - do { - spin_lock_irqsave(&vfe->output_lock, flags); - done = !output->gen2.active_num; - spin_unlock_irqrestore(&vfe->output_lock, flags); - usleep_range(10000, 20000); - - if (timeout++ == 100) { - dev_err(vfe->camss->dev, "VFE idle timeout - resetting\n"); - vfe_reset(vfe); - output->gen2.active_num = 0; - return 0; - } - } while (!done); spin_lock_irqsave(&vfe->output_lock, flags); for (i = 0; i < output->wm_num; i++) vfe_wm_stop(vfe, output->wm_idx[i]); + output->gen2.active_num = 0; spin_unlock_irqrestore(&vfe->output_lock, flags); + vfe_reset(vfe); + return 0; }