From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794059218; b=2b85XGofN7TzwEC+2oH8E2jEM83lQ+/r8AoOIM+XVCr6IOf205kXfdTKesTjbbZWY08g vPYP/8vAyzHUmzHI9Y9NNcp3lWCFRG2ywThufYBeNwqNv6UbxQB4WnYaKh/uW1ZLSS/I1 w+Fh3m5Q7/QpV8ak/JR6XA0TxS3fp7cyl8aaCVtdI30kYKeED2y9qUBbc9rQodMjiT80b agqKSEOdgoneZI6qGqH6MpbBe4OjNV5jMPZ4mCzqDcZ2C2zQMckIWTgaaSxKyEctqRVHM AlxJxRLEQgs2m/SLFfa53hhtk+8KpVCMaD+rRX/iMlIe/cHZRtjEeGZsquL2Qj1isWQ== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794059218; h=Received:DKIM-Signature:Message-ID:From:Subject:Reply-To:To:Cc: In-Reply-To:References:Content-Type:Content-Transfer-Encoding:Date; bh=c4n6WMEBe8WCFKaEg+YqPaCjXECQqngzidVsPj8WBg4=; b=GchVlPaVVDIz9JPUjQ8BJ5kt2VdueiGJIXJUIW5cdi3M5NhAMjY3B02iwPxfP4I9Hy6N UyikY+hrBXGuUtUveahVIySVVgUL4mYMbC1D2PoB6QvfJqrJWXScCbsKc/tfGG0jkY/pb 0O+keACF4aAmQLcyvAMlpM+G6DCKXrv36v77QGvKl0aNUBH9KHhIW9VF5nCBln+DGqnHT 4aTU1Q46akuUe9LTnyfNLlTH5ZDM9Pb0N5cmKWTlOTWRhQdT6fo7jBx64TBJI/Dwr4ltz 80F9Jdq69uBLe90A4vp5iBz86hBMJYM2G04XfOmdRGamprLA+LhOPMyFLwKP2uqqWJQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=LXvixqJO; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EAE8B606A326 for ; Sat, 7 Nov 2026 13:46:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=LXvixqJO Received: by smtp.kernel.org (Postfix) with ESMTPSA id 647E11F0089F; Sat, 7 Nov 2026 13:46:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794059217; bh=c4n6WMEBe8WCFKaEg+YqPaCjXECQqngzidVsPj8WBg4=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=LXvixqJOQdG5WtDhfiH3Yqk+ciTViTkJxnD5fK81UcjvsX7r0ztYqdwzws7shLbCt n4g3zPAshUekzKWBCg6wTSEU9uAuJv23r7RJgCjApMIIZC07cUhGmL77DOox4NjYG5 yZB7U/+JeQhyDZDkEp3fE/OFqimBsUFEvqyWvJTIXLhOjfxP1hku25yFkAzIKwqAlv t4CrW6yppxLYwKRM1E2lnKQIN1wh2Z2i1ZFVWsYlBOtRlNcSXDfn6qZv0eFQhBGBGU nAF9ibAy9HVHOkqYiO6vi7keVZE5ll+Czt6Fnnk5LnAClv+ZBTmn0I4B2BLBYIThow 2N0901JkAHzXA== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH v8 2/7] dmaengine: dw-edma: Avoid resetting an LL on stale stopped status Reply-To: sashiko-reviews@lists.linux.dev To: "Koichiro Den" Cc: linux-pci@vger.kernel.org In-Reply-To: <20261107133027.364237-3-den@valinux.co.jp> References: <20261107133027.364237-1-den@valinux.co.jp> <20261107133027.364237-3-den@valinux.co.jp> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Sat, 07 Nov 2026 13:46:56 +0000 X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list > CS can still report STOPPED briefly after a doorbell write, before the > DMA engine starts consuming the published LL entries. Finishing > termination relying solely on that value can reset the ring while a > transfer is about to start, leaving hardware and software ring positions > out of sync and stalling subsequent transfers. >=20 > Require LLP to reach the published tail, on top of the standard criteria > (ie. CS=3DSTOPPED and zero transfer size) before > dw_edma_finish_termination(). Non-LL mode behavior is unchanged. >=20 > Cc: stable@vger.kernel.org > Fixes: db79c4e264ef ("dmaengine: dw-edma: Make DMA link list work as a ci= rcular buffer") > Signed-off-by: Koichiro Den Sashiko has reviewed this patch and found no issues. --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20261107133027.3642= 37-1-den@valinux.co.jp?part=3D2