From mboxrd@z Thu Jan 1 00:00:00 1970 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 954D7CCF2C9 for ; Sun, 18 Oct 2026 04:08:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=cDfkN4RgASnPISjCyv0z3UO7udtv0woiZYBLSoDhUL4=; b=wiYBtRl/IiLH5u/Kzl8vRpQXjG 8WNaN2cdvpUaSsaiwOiDQmyhRKCBFBe5tHHGLZC9ljgwAv0cPf7GzeiwkqT7TN0hqLt7RRZHRHqNE rCmYAtJCwevhWhQJbEQ0PyovFgdGMtLAlqrmO8/pZ6g62AlF39oMbUPryG/iLY6qtdpaeb8O5tjzl amhzwa0CoTrDDHdDx7ye11om79Mc6LA0f0vRmS5Hp08i7gE3Y2uiCHlK+sbfnucu0jsFe645pY4tQ yrVzfy/6EzPEsuX01aPvZuxd9BX/tmASujaUgJmRPls/s9/pUz9yVZLL5kH2q6m+C4RwiU/LdM9rJ yebwXwLA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xIIBp-00000005VDi-0ZO6; Sun, 18 Oct 2026 04:08:05 +0000 Received: from m16.mail.163.com ([117.135.210.2]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1xIIBl-00000005VCf-3Pi9 for linux-arm-kernel@lists.infradead.org; Sun, 18 Oct 2026 04:08:03 +0000 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> 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- X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261017_210802_297573_17C0B3B9 X-CRM114-Status: UNSURE ( 9.48 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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