Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933945AbcJUOLr (ORCPT ); Fri, 21 Oct 2016 10:11:47 -0400 Received: from mail-lf0-f68.google.com ([209.85.215.68]:34367 "EHLO mail-lf0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933641AbcJUOLk (ORCPT ); Fri, 21 Oct 2016 10:11:40 -0400 From: Tvrtko Ursulin X-Google-Original-From: Tvrtko Ursulin To: Intel-gfx@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, Chris Wilson , Tvrtko Ursulin , Masahiro Yamada , Pawel Osciak , Marek Szyprowski , Kyungmin Park , Tomasz Stanislawski , Matt Porter , Alexandre Bounine Subject: [PATCH 1/5] lib/scatterlist: Fix offset type in sg_alloc_table_from_pages Date: Fri, 21 Oct 2016 15:11:19 +0100 Message-Id: <1477059083-3500-2-git-send-email-tvrtko.ursulin@linux.intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1477059083-3500-1-git-send-email-tvrtko.ursulin@linux.intel.com> References: <1477059083-3500-1-git-send-email-tvrtko.ursulin@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3700 Lines: 96 From: Tvrtko Ursulin Scatterlist entries have an unsigned int for the offset so correct the sg_alloc_table_from_pages function accordingly. Since these are offsets withing a page, unsigned int is wide enough. Also converts callers which were using unsigned long locally with the lower_32_bits annotation to make it explicitly clear what is happening. Signed-off-by: Tvrtko Ursulin Cc: Masahiro Yamada Cc: Pawel Osciak Cc: Marek Szyprowski Cc: Kyungmin Park Cc: Tomasz Stanislawski Cc: Matt Porter Cc: Alexandre Bounine Cc: linux-media@vger.kernel.org Cc: linux-kernel@vger.kernel.org --- drivers/media/v4l2-core/videobuf2-dma-contig.c | 4 ++-- drivers/rapidio/devices/rio_mport_cdev.c | 4 ++-- include/linux/scatterlist.h | 2 +- lib/scatterlist.c | 2 +- 4 files changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/media/v4l2-core/videobuf2-dma-contig.c b/drivers/media/v4l2-core/videobuf2-dma-contig.c index fb6a177be461..a3aac7533241 100644 --- a/drivers/media/v4l2-core/videobuf2-dma-contig.c +++ b/drivers/media/v4l2-core/videobuf2-dma-contig.c @@ -478,7 +478,7 @@ static void *vb2_dc_get_userptr(struct device *dev, unsigned long vaddr, { struct vb2_dc_buf *buf; struct frame_vector *vec; - unsigned long offset; + unsigned int offset; int n_pages, i; int ret = 0; struct sg_table *sgt; @@ -506,7 +506,7 @@ static void *vb2_dc_get_userptr(struct device *dev, unsigned long vaddr, buf->dev = dev; buf->dma_dir = dma_dir; - offset = vaddr & ~PAGE_MASK; + offset = lower_32_bits(vaddr & ~PAGE_MASK); vec = vb2_create_framevec(vaddr, size, dma_dir == DMA_FROM_DEVICE); if (IS_ERR(vec)) { ret = PTR_ERR(vec); diff --git a/drivers/rapidio/devices/rio_mport_cdev.c b/drivers/rapidio/devices/rio_mport_cdev.c index 436dfe871d32..f545cf20561f 100644 --- a/drivers/rapidio/devices/rio_mport_cdev.c +++ b/drivers/rapidio/devices/rio_mport_cdev.c @@ -876,10 +876,10 @@ rio_dma_transfer(struct file *filp, u32 transfer_mode, * offset within the internal buffer specified by handle parameter. */ if (xfer->loc_addr) { - unsigned long offset; + unsigned int offset; long pinned; - offset = (unsigned long)(uintptr_t)xfer->loc_addr & ~PAGE_MASK; + offset = lower_32_bits(xfer->loc_addr & ~PAGE_MASK); nr_pages = PAGE_ALIGN(xfer->length + offset) >> PAGE_SHIFT; page_list = kmalloc_array(nr_pages, diff --git a/include/linux/scatterlist.h b/include/linux/scatterlist.h index cb3c8fe6acd7..c981bee1a3ae 100644 --- a/include/linux/scatterlist.h +++ b/include/linux/scatterlist.h @@ -263,7 +263,7 @@ int __sg_alloc_table(struct sg_table *, unsigned int, unsigned int, int sg_alloc_table(struct sg_table *, unsigned int, gfp_t); int sg_alloc_table_from_pages(struct sg_table *sgt, struct page **pages, unsigned int n_pages, - unsigned long offset, unsigned long size, + unsigned int offset, unsigned long size, gfp_t gfp_mask); size_t sg_copy_buffer(struct scatterlist *sgl, unsigned int nents, void *buf, diff --git a/lib/scatterlist.c b/lib/scatterlist.c index 004fc70fc56a..e05e7fc98892 100644 --- a/lib/scatterlist.c +++ b/lib/scatterlist.c @@ -391,7 +391,7 @@ EXPORT_SYMBOL(sg_alloc_table); */ int sg_alloc_table_from_pages(struct sg_table *sgt, struct page **pages, unsigned int n_pages, - unsigned long offset, unsigned long size, + unsigned int offset, unsigned long size, gfp_t gfp_mask) { unsigned int chunks; -- 2.7.4