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Subject: [media] vb2: Fix dma_dir setting for dma-contig mem type Author: Sakari Ailus <sakari.ai...@linux.intel.com> Date: Fri Feb 13 04:42:37 2015 -0300 The last argument of vb2_dc_get_user_pages() is of type enum dma_data_direction, but the caller, vb2_dc_get_userptr() passes a value which is the result of comparison dma_dir == DMA_FROM_DEVICE. This results in the write parameter to get_user_pages() being zero in all cases, i.e. that the caller has no intent to write there. This was broken by patch "vb2: replace 'write' by 'dma_dir'". Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com> Cc: stable@vger.kernel.org # for v3.19 Acked-by: Hans Verkuil <hans.verk...@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mche...@osg.samsung.com> drivers/media/v4l2-core/videobuf2-dma-contig.c | 3 +-- 1 files changed, 1 insertions(+), 2 deletions(-) --- http://git.linuxtv.org/cgit.cgi/media_tree.git/commit/?id=9ccd3b57b30a8c21897d88fae5f3e8be1adc216a diff --git a/drivers/media/v4l2-core/videobuf2-dma-contig.c b/drivers/media/v4l2-core/videobuf2-dma-contig.c index b481d20..69e0483 100644 --- a/drivers/media/v4l2-core/videobuf2-dma-contig.c +++ b/drivers/media/v4l2-core/videobuf2-dma-contig.c @@ -632,8 +632,7 @@ static void *vb2_dc_get_userptr(void *alloc_ctx, unsigned long vaddr, } /* extract page list from userspace mapping */ - ret = vb2_dc_get_user_pages(start, pages, n_pages, vma, - dma_dir == DMA_FROM_DEVICE); + ret = vb2_dc_get_user_pages(start, pages, n_pages, vma, dma_dir); if (ret) { unsigned long pfn; if (vb2_dc_get_user_pfn(start, n_pages, vma, &pfn) == 0) { -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
