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 B6B5DC28B2E for ; Mon, 10 Mar 2025 08:58:27 +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:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=+nActGH5X3rYsSJc5n4te1fJegSfTeLgxpgzK7o2cEc=; b=w1HRz6Pqww/N+U+Uod5GJbBmEb QwCyGcSzEX8D1sFGXFokQtur7mxXY2QmjU0v+kgKB2B7CP0HPSrnw0PAm9aXgu42iPAsO2pHNQCfa tUytHKbRVjUhlvq5dy4iITSu9s4zI6UKoOkUjvGNMyviPRnFlVwgiJBL/rsxxZkctT0atoqAqSOMb WXGgcPsvYsdcPB7Bwa5s23j3TfZ30m3ij72MkNtWfGx16qBYp7upA/VT/Wb9cgMHxU69CXV1UN9Ff iXbx7krgMQom84UqPSzVDxOmEurv9PzroQKchvy1xIFZjokKK0fdeBIKLZLsUfStfvqIug/riL3cn hKaw8LWw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1trYxn-00000001z7N-0s8M; Mon, 10 Mar 2025 08:58:19 +0000 Received: from nyc.source.kernel.org ([2604:1380:45d1:ec00::3]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1trYw9-00000001yrE-3STj for linux-arm-kernel@lists.infradead.org; Mon, 10 Mar 2025 08:56:38 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id 52351A45182; Mon, 10 Mar 2025 08:51:06 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AF69EC4CEEC; Mon, 10 Mar 2025 08:56:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741596996; bh=C12mkxyY7Tuz4k36lFMWBiBskfY3UsSgTUDwu4ymK5A=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=VS2GD8mC3KF67GsqwrZolL2PJC5nV8QLxQyAj07n3f39prZtkH1iJvEM60yAG3gQD V6plRwhAVbOW7QKUgyQAJHRX8KqkzSNYtqJVSaCbMIZFHBfrzwotEzdTyBf7nahb1F ulw5xmNt1ZS0/aH3skbKsPmqAglFS17CXESwCPnsNYfVvt5TieC74ADPeUyUBP34F1 pDsXpTVlIpEGb5v1s3vkFszlbLMYeyG2K7k5dPXep0ShufS8ewpYY5j+8DCkBkiobB dcRrEG7RKtdyu/gY2i+79yqPKgi/ec7BtqCYNCz/r78UnJa0FdyBemgkAxkJvqs9vk pVW7xYFBa9f3g== Date: Mon, 10 Mar 2025 14:26:26 +0530 From: Sumit Garg To: Jens Wiklander Cc: linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, op-tee@lists.trustedfirmware.org, linux-arm-kernel@lists.infradead.org, Olivier Masse , Thierry Reding , Yong Wu , Sumit Semwal , Benjamin Gaignard , Brian Starkey , John Stultz , "T . J . Mercier" , Christian =?iso-8859-1?Q?K=F6nig?= , Matthias Brugger , AngeloGioacchino Del Regno , azarrabi@qti.qualcomm.com, Simona Vetter , Daniel Stone Subject: Re: [PATCH v6 01/10] tee: tee_device_alloc(): copy dma_mask from parent device Message-ID: References: <20250305130634.1850178-1-jens.wiklander@linaro.org> <20250305130634.1850178-2-jens.wiklander@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250305130634.1850178-2-jens.wiklander@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250310_015637_925855_16E6B567 X-CRM114-Status: GOOD ( 14.91 ) 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 On Wed, Mar 05, 2025 at 02:04:07PM +0100, Jens Wiklander wrote: > If a parent device is supplied to tee_device_alloc(), copy the dma_mask > field into the new device. This avoids future warnings when mapping a > DMA-buf for the device. > > Signed-off-by: Jens Wiklander > --- > drivers/tee/tee_core.c | 2 ++ > 1 file changed, 2 insertions(+) > Reviewed-by: Sumit Garg -Sumit > diff --git a/drivers/tee/tee_core.c b/drivers/tee/tee_core.c > index d113679b1e2d..685afcaa3ea1 100644 > --- a/drivers/tee/tee_core.c > +++ b/drivers/tee/tee_core.c > @@ -922,6 +922,8 @@ struct tee_device *tee_device_alloc(const struct tee_desc *teedesc, > teedev->dev.class = &tee_class; > teedev->dev.release = tee_release_device; > teedev->dev.parent = dev; > + if (dev) > + teedev->dev.dma_mask = dev->dma_mask; > > teedev->dev.devt = MKDEV(MAJOR(tee_devt), teedev->id); > > -- > 2.43.0 >