From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from m16.mail.163.com (m16.mail.163.com [117.135.210.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A3AFC230BD5; Sun, 18 Oct 2026 04:09:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=117.135.210.2 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792296550; cv=none; b=EkzGxZjpJgjD/J9P4dHpFSKoHMtam6+tWKOi+Ffh0FiejdkhpW7FHFkd5sKFIJth9/bkTcsmE0RDF8MUrcsaLTXcPuBMeJzZolEAcA5IJ/0c9xEwyOQ8ysr4FzOcPt53r0e5ZP1gnXM1BuNohYgpvMaBUByqURVZu9PjXopYa3A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792296550; c=relaxed/simple; bh=vOTAIKrqlO69I07vVjq/Bh6uNMeCrlYmRKCP1B1HzZ4=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=jTH+7e2OXnPBBGPx1d883kV/RtxnTD89FFhL+Zfr2v6IkJSvajU/G1wqJTuNDxB4K8i1NZXbUGCdKJ5tnTd3B9s2o29C8MkOWRnzKc6rgiqfOEiTkp/Xm61jXa5SnFjZiJIo79I4Uf0Nb5uFELPI/YmtfgkbL5GT5uxMHU1ZjPk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com; spf=pass smtp.mailfrom=163.com; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b=pG0qzv28; arc=none smtp.client-ip=117.135.210.2 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=163.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b="pG0qzv28" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=cD fkN4RgASnPISjCyv0z3UO7udtv0woiZYBLSoDhUL4=; b=pG0qzv28dfr6ydQjA/ Mp31Eql3Wr6kzrNffAJVozrufUZzpUio7XXmst4fmt1Zo4lri7eW//9WWaugZOL4 Jo3+Dx4sDrumvahEhk2vox7bWvWkdzTpCZSlsfiisGM6RXOhS2WWcOC7fMqv60QP GXRMhalXe2vTIOsXtXA2p2Jfo= Received: from pc.localdomain (unknown []) by gzga-smtp-mtada-g0-2 (Coremail) with SMTP id _____wD3n6n9RdRqdUaGAw--.28247S9; Sun, 18 Oct 2026 12:07:35 +0800 (CST) From: Jiale Yao To: Linus Walleij , Vinod Koul , Frank Li , Dan Williams , Srinidh Kasagar , Andrew Morton , linux-arm-kernel@lists.infradead.org, dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Jiale Yao Subject: [PATCH 7/7] dmaengine: ste_dma40: synchronize tasklet when releasing a channel Date: Sun, 18 Oct 2026 12:07:23 +0800 Message-Id: <20261018040724.534641-8-yaojiale02@163.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20261018040724.534641-1-yaojiale02@163.com> References: <20261018040724.534641-1-yaojiale02@163.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID:_____wD3n6n9RdRqdUaGAw--.28247S9 X-Coremail-Antispam: 1Uf129KBjvdXoW7GFW7WrW5tr4kKFy8tryxXwb_yoWkGFb_Za 40gr93Xw1DGryDCr1Utr15ArySvay2gFn7Ww4jqFy3XrW3Z3ZxJFWq9rykWr18uFW7CF95 Z34vgryfC3yxCjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7sRuuWL5UUUUU== X-CM-SenderInfo: x1dryxhdohiji6rwjhhfrp/xtbC7whjnWrURgjIHgAA3- DMA completion handling schedules a per-channel tasklet that processes completed descriptors and invokes client callbacks. Channel release terminates and frees the descriptor state without draining a tasklet that was already queued. After d40_free_dma() removes the channel from the interrupt lookup tables, kill the tasklet before returning the channel to the DMAengine core. Fixes: 8d318a50b3d7 ("DMAENGINE: Support for ST-Ericssons DMA40 block v3") Signed-off-by: Jiale Yao --- drivers/dma/ste_dma40.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index 0d9ffa3e2663..647a265590c2 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -2484,6 +2484,8 @@ static void d40_free_chan_resources(struct dma_chan *chan) if (err) chan_err(d40c, "Failed to free channel\n"); spin_unlock_irqrestore(&d40c->lock, flags); + + tasklet_kill(&d40c->tasklet); } static struct dma_async_tx_descriptor *d40_prep_memcpy(struct dma_chan *chan, -- 2.34.1