From nobody Sat Jul 25 02:43:55 2026 Received: from cstnet.cn (smtp25.cstnet.cn [159.226.251.25]) (using TLSv1.2 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C416D406821; Mon, 20 Jul 2026 11:53:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.226.251.25 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784548412; cv=none; b=KWkPuKHMiD1GOFtoJdKj5Ev/FeEeVzzdf37pYcF8lHAeX6jkbtCMnE8Xw7whDx5M04sdbpRKErPxCNnDdIYUsSSBDvEDFpzzbe223bJbm4xYTTIMtMmYnfR+IOSoqagjk0U01XFR7MZIqOjE22mJ8u6wNiI77DyrtevmGUSaLjw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784548412; c=relaxed/simple; bh=+H9sxZgfPoUdVnrA+kHpYFMwzNmVsSsPCq/V5Ez2gs0=; h=From:To:Cc:Subject:Date:Message-ID:Content-Type:MIME-Version; b=iR8QgkSwnq4U5WXHGOcMCPdU/HpVfaIN/MuHCidNqdj60mhiWTevuTjCTMYctpl7U3peHO28lq7Iek0UJasNqCRvMaAFzkCJ7RyRqkTAJgOUt88ornsZ3rFR9zPfHCUeMf2Ej2yGFKV5jV6EdY1N1LXzoiGZnr/lzcJ6qsj9abg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=iscas.ac.cn; spf=pass smtp.mailfrom=iscas.ac.cn; arc=none smtp.client-ip=159.226.251.25 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=iscas.ac.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=iscas.ac.cn Received: from localhost.localdomain (unknown [111.196.245.140]) by APP-05 (Coremail) with SMTP id zQCowADHND8yDF5qtcmIAA--.52459S2; Mon, 20 Jul 2026 19:53:22 +0800 (CST) From: Pengpeng Hou To: Bin Liu , Mauro Carvalho Chehab Cc: Nicolas Dufresne , Matthias Brugger , AngeloGioacchino Del Regno , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, Pengpeng Hou Subject: [PATCH v2] media: mediatek: jpeg: retry HW selection after successful wait Date: Mon, 20 Jul 2026 19:53:22 +0800 Message-ID: <20260720115322.89784-1-pengpeng@iscas.ac.cn> X-Mailer: git-send-email 2.50.1 Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: zQCowADHND8yDF5qtcmIAA--.52459S2 X-Coremail-Antispam: 1UD129KBjvJXoW7Aw4rWFyftryxJF1fXFyftFb_yoW8ZFWxpr W5K39IvrW8Gr4qgr48Aa1UAF15Gw1rCa1xWrnxZw48ArsIqF1Dt3WUta48tFyxAFy2ka45 JF1FvayfCrW2yFJanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUU9Y14x267AKxVW8JVW5JwAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2ocxC64kIII0Yj41l84x0c7CEw4AK67xGY2AK02 1l84ACjcxK6xIIjxv20xvE14v26r4j6ryUM28EF7xvwVC0I7IYx2IY6xkF7I0E14v26F4j 6r4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oV Cq3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0 I7IYx2IY67AKxVWUtVWrXwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r 4UM4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwACI402YVCY1x02628v n2kIc2xKxwCY1x0262kKe7AKxVWUtVW8ZwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7x kEbVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E 67AF67kF1VAFwI0_Jw0_GFylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUCVW8Jw CI42IY6xIIjxv20xvEc7CjxVAFwI0_Cr0_Gr1UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWU CwCI42IY6I8E87Iv67AKxVWUJVW8JwCI42IY6I8E87Iv6xkF7I0E14v26r4j6r4UJbIYCT nIWIevJa73UjIFyTuYvjfUOuc_DUUUU X-CM-SenderInfo: pshqw1xhqjqxpvfd2hldfou0/ wait_event_interruptible_timeout() returns a positive value when its condition becomes true before timeout. mtk_jpegdec_worker() treats every nonzero result as failure, so a normal decoder wakeup can finish the mem2mem job as though no hardware became available. Handle an interrupted wait and exhausted timeout retries separately, and retry hardware selection after a successful wakeup. The encoder uses wait_event_interruptible(), whose successful return is zero, so this change does not alter its separate no-timeout waiting policy. Signed-off-by: Pengpeng Hou --- Changes since v1: https://lore.kernel.org/all/20260625003142.99598-1-pengpe= ng@iscas.ac.cn/ - split interrupted waits, timeout exhaustion and successful wakeups - use distinct diagnostics and explain why the encoder path is outside this fix - rebase onto v7.2-rc4 drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c b/drivers= /media/platform/mediatek/jpeg/mtk_jpeg_core.c index d147ec483081..9634c95aaada 100644 --- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c +++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c @@ -1697,9 +1697,15 @@ static void mtk_jpegdec_worker(struct work_struct *w= ork) ret =3D wait_event_interruptible_timeout(jpeg->hw_wq, atomic_read(&jpeg->hw_rdy) > 0, MTK_JPEG_HW_TIMEOUT_MSEC); - if (ret !=3D 0 || (i++ > MTK_JPEG_MAX_RETRY_TIME)) { - dev_err(jpeg->dev, "%s : %d, all HW are busy\n", - __func__, __LINE__); + if (ret < 0) { + dev_err(jpeg->dev, "decoder HW wait interrupted: %d\n", + ret); + v4l2_m2m_job_finish(jpeg->m2m_dev, ctx->fh.m2m_ctx); + return; + } + + if (!ret && i++ > MTK_JPEG_MAX_RETRY_TIME) { + dev_err(jpeg->dev, "all decoder HW are busy\n"); v4l2_m2m_job_finish(jpeg->m2m_dev, ctx->fh.m2m_ctx); return; }