From 831e9da7dc5c22fd2a5fb64e999f6e077a4338c3 Mon Sep 17 00:00:00 2001 From: Tiago Vignatti Date: Tue, 22 Dec 2015 19:36:45 -0200 Subject: dma-buf: Remove range-based flush MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch removes range-based information used for optimizations in begin_cpu_access and end_cpu_access. We don't have any user nor implementation using range-based flush. It seems a consensus that if we ever want something like that again (or even more robust using 2D, 3D sub-range regions) we can use the upcoming dma-buf sync ioctl for such. Cc: Sumit Semwal Cc: Daniel Vetter Signed-off-by: Tiago Vignatti Reviewed-by: Stéphane Marchesin Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/1450820214-12509-3-git-send-email-tiago.vignatti@intel.com --- drivers/dma-buf/dma-buf.c | 13 ++++--------- 1 file changed, 4 insertions(+), 9 deletions(-) (limited to 'drivers/dma-buf') diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c index 155c1464948e..b2ac13b4ddaa 100644 --- a/drivers/dma-buf/dma-buf.c +++ b/drivers/dma-buf/dma-buf.c @@ -539,13 +539,11 @@ EXPORT_SYMBOL_GPL(dma_buf_unmap_attachment); * preparations. Coherency is only guaranteed in the specified range for the * specified access direction. * @dmabuf: [in] buffer to prepare cpu access for. - * @start: [in] start of range for cpu access. - * @len: [in] length of range for cpu access. * @direction: [in] length of range for cpu access. * * Can return negative error values, returns 0 on success. */ -int dma_buf_begin_cpu_access(struct dma_buf *dmabuf, size_t start, size_t len, +int dma_buf_begin_cpu_access(struct dma_buf *dmabuf, enum dma_data_direction direction) { int ret = 0; @@ -554,8 +552,7 @@ int dma_buf_begin_cpu_access(struct dma_buf *dmabuf, size_t start, size_t len, return -EINVAL; if (dmabuf->ops->begin_cpu_access) - ret = dmabuf->ops->begin_cpu_access(dmabuf, start, - len, direction); + ret = dmabuf->ops->begin_cpu_access(dmabuf, direction); return ret; } @@ -567,19 +564,17 @@ EXPORT_SYMBOL_GPL(dma_buf_begin_cpu_access); * actions. Coherency is only guaranteed in the specified range for the * specified access direction. * @dmabuf: [in] buffer to complete cpu access for. - * @start: [in] start of range for cpu access. - * @len: [in] length of range for cpu access. * @direction: [in] length of range for cpu access. * * This call must always succeed. */ -void dma_buf_end_cpu_access(struct dma_buf *dmabuf, size_t start, size_t len, +void dma_buf_end_cpu_access(struct dma_buf *dmabuf, enum dma_data_direction direction) { WARN_ON(!dmabuf); if (dmabuf->ops->end_cpu_access) - dmabuf->ops->end_cpu_access(dmabuf, start, len, direction); + dmabuf->ops->end_cpu_access(dmabuf, direction); } EXPORT_SYMBOL_GPL(dma_buf_end_cpu_access); -- cgit v1.2.3