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[188.141.3.169]) by smtp.gmail.com with ESMTPSA id b16-20020a5d4d90000000b0030fd03e3d25sm16989961wru.75.2023.08.30.08.16.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 30 Aug 2023 08:16:24 -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 v3 06/10] media: qcom: camss: Fix VFE-480 vfe_disable_output() Date: Wed, 30 Aug 2023 16:16:11 +0100 Message-ID: <20230830151615.3012325-7-bryan.odonoghue@linaro.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230830151615.3012325-1-bryan.odonoghue@linaro.org> References: <20230830151615.3012325-1-bryan.odonoghue@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" 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 ve= rsion Titan 480") Cc: stable@vger.kernel.org Signed-off-by: Bryan O'Donoghue --- .../media/platform/qcom/camss/camss-vfe-480.c | 22 +++---------------- 1 file changed, 3 insertions(+), 19 deletions(-) diff --git a/drivers/media/platform/qcom/camss/camss-vfe-480.c b/drivers/me= dia/platform/qcom/camss/camss-vfe-480.c index f70aad2e8c237..8ddb8016434ae 100644 --- a/drivers/media/platform/qcom/camss/camss-vfe-480.c +++ b/drivers/media/platform/qcom/camss/camss-vfe-480.c @@ -8,7 +8,6 @@ * Copyright (C) 2021 Jonathan Marek */ =20 -#include #include #include #include @@ -328,35 +327,20 @@ static int vfe_enable_output(struct vfe_line *line) return 0; } =20 -static int vfe_disable_output(struct vfe_line *line) +static void vfe_disable_output(struct vfe_line *line) { struct vfe_device *vfe =3D to_vfe(line); struct vfe_output *output =3D &line->output; unsigned long flags; unsigned int i; - bool done; - int timeout =3D 0; - - do { - spin_lock_irqsave(&vfe->output_lock, flags); - done =3D !output->gen2.active_num; - spin_unlock_irqrestore(&vfe->output_lock, flags); - usleep_range(10000, 20000); - - if (timeout++ =3D=3D 100) { - dev_err(vfe->camss->dev, "VFE idle timeout - resetting\n"); - vfe_reset(vfe); - output->gen2.active_num =3D 0; - return 0; - } - } while (!done); =20 spin_lock_irqsave(&vfe->output_lock, flags); for (i =3D 0; i < output->wm_num; i++) vfe_wm_stop(vfe, output->wm_idx[i]); + output->gen2.active_num =3D 0; spin_unlock_irqrestore(&vfe->output_lock, flags); =20 - return 0; + vfe_reset(vfe); } =20 /* --=20 2.41.0