From patchwork Wed May 7 14:42:02 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marek Szyprowski X-Patchwork-Id: 888397 Received: from mailout1.w1.samsung.com (mailout1.w1.samsung.com [210.118.77.11]) (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 C84F8289806 for ; Wed, 7 May 2025 14:42:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=210.118.77.11 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746628968; cv=none; b=qtGMV52pJBufj9moao5u6EuO07nVdaweP1tnzw9PIb+tOMGzBNdwU8puxZy+18zLXkvnicYX7tBgLvnyvSRuZyAsXIHtFFTFHkAsSIj7zVQURej+77cMwq/jxKYYGB3SIytlYcwqwDNbeDmZ1RXYzRbFERRhNfBooCdXUJZsdJU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746628968; c=relaxed/simple; bh=8HQ4gZal2ZKCAxamtVYVPeNNHi172dDK0dsNXjtksHU=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:MIME-Version: Content-Type:References; b=uWW9qRFNBJgoDsQGoFDM+lb4jWw0xTt4kwWALdG66gvj6tX5qIY4ro434OdKJAZni/37nzM6Sg5PGjROMUg+hz54/SSyRAClglIHMgrnuazcrGq5y3KvHt8ohfOBZI+/rKf+WACnbmyLEbrU8SRqdA6NorGQncCaK8zkg9IkVGE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=samsung.com; spf=pass smtp.mailfrom=samsung.com; dkim=pass (1024-bit key) header.d=samsung.com header.i=@samsung.com header.b=qxHfdzrL; arc=none smtp.client-ip=210.118.77.11 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=samsung.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=samsung.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=samsung.com header.i=@samsung.com header.b="qxHfdzrL" Received: from eucas1p1.samsung.com (unknown [182.198.249.206]) by mailout1.w1.samsung.com (KnoxPortal) with ESMTP id 20250507144243euoutp0110262f1eeaf6e75519ea26b0a7d1315e~9Rcm5-8xd0094300943euoutp01z for ; Wed, 7 May 2025 14:42:43 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 mailout1.w1.samsung.com 20250507144243euoutp0110262f1eeaf6e75519ea26b0a7d1315e~9Rcm5-8xd0094300943euoutp01z DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=samsung.com; s=mail20170921; t=1746628963; bh=34R7cvqohrkjem3KZ8Do3QII04UQFGDnVLXvAbb0TTQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qxHfdzrLNiqK+s2D0ewAC4E5e7veKqxvSE7DL5EKK6t5vTjknIMZaheK1VNuC7v48 ITU0s4jONjilEtP3kC7FRiOev2H9+C8n8ZujKNGTin4DaAy2g7OO0nPNC07HwGtnHn BHZ87BORDiEHGUtfxUyC5I1yn75nnYM3YdcKbwWY= Received: from eusmtip2.samsung.com (unknown [203.254.199.222]) by eucas1p1.samsung.com (KnoxPortal) with ESMTPA id 20250507144242eucas1p183cb5456d7caacc02d60e33c4878a84d~9RcmqWM__1893918939eucas1p1O; Wed, 7 May 2025 14:42:42 +0000 (GMT) Received: from AMDC4653.digital.local (unknown [106.120.51.32]) by eusmtip2.samsung.com (KnoxPortal) with ESMTPA id 20250507144242eusmtip28e8268df9b948d8f2057ea2720b97455~9RcmFkT1N3184031840eusmtip2M; Wed, 7 May 2025 14:42:42 +0000 (GMT) From: Marek Szyprowski To: dri-devel@lists.freedesktop.org, linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org, iommu@lists.linux.dev Cc: Marek Szyprowski , Gerd Hoffmann , Vivek Kasireddy , Sumit Semwal , =?utf-8?q?Christian_K=C3=B6nig?= , Gurchetan Singh , Robin Murphy , stable@vger.kernel.org Subject: [PATCH v2 2/3] udmabuf: use sgtable-based scatterlist wrappers Date: Wed, 7 May 2025 16:42:02 +0200 Message-Id: <20250507144203.2081756-3-m.szyprowski@samsung.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250507144203.2081756-1-m.szyprowski@samsung.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CMS-MailID: 20250507144242eucas1p183cb5456d7caacc02d60e33c4878a84d X-Msg-Generator: CA X-RootMTR: 20250507144242eucas1p183cb5456d7caacc02d60e33c4878a84d X-EPHeader: CA X-CMS-RootMailID: 20250507144242eucas1p183cb5456d7caacc02d60e33c4878a84d References: <20250507144203.2081756-1-m.szyprowski@samsung.com> Use common wrappers operating directly on the struct sg_table objects to fix incorrect use of scatterlists sync calls. dma_sync_sg_for_*() functions have to be called with the number of elements originally passed to dma_map_sg_*() function, not the one returned in sgtable's nents. Fixes: 1ffe09590121 ("udmabuf: fix dma-buf cpu access") Signed-off-by: Marek Szyprowski Acked-by: Vivek Kasireddy --- drivers/dma-buf/udmabuf.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/dma-buf/udmabuf.c b/drivers/dma-buf/udmabuf.c index 7eee3eb47a8e..c9d0c68d2fcb 100644 --- a/drivers/dma-buf/udmabuf.c +++ b/drivers/dma-buf/udmabuf.c @@ -264,8 +264,7 @@ static int begin_cpu_udmabuf(struct dma_buf *buf, ubuf->sg = NULL; } } else { - dma_sync_sg_for_cpu(dev, ubuf->sg->sgl, ubuf->sg->nents, - direction); + dma_sync_sgtable_for_cpu(dev, ubuf->sg, direction); } return ret; @@ -280,7 +279,7 @@ static int end_cpu_udmabuf(struct dma_buf *buf, if (!ubuf->sg) return -EINVAL; - dma_sync_sg_for_device(dev, ubuf->sg->sgl, ubuf->sg->nents, direction); + dma_sync_sgtable_for_device(dev, ubuf->sg, direction); return 0; }