xiaomi-sm8450/android_kernel_xiaomi_sm8450
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cross-tree: phase out dma_zalloc_coherent()

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We already need to zero out memory for dma_alloc_coherent(), as such
using dma_zalloc_coherent() is superflous. Phase it out.

This change was generated with the following Coccinelle SmPL patch:

@ replace_dma_zalloc_coherent @
expression dev, size, data, handle, flags;
@@

-dma_zalloc_coherent(dev, size, handle, flags)
+dma_alloc_coherent(dev, size, handle, flags)

Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
[hch: re-ran the script on the latest tree]
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Luis Chamberlain
2019-01-04 09:23:09 +01:00
committed by Christoph Hellwig
parent 3bd6e94bec
commit 750afb08ca
173 changed files with 915 additions and 949 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/dma/xilinx/xilinx_dma.c
View File

@@ -879,10 +879,9 @@ static int xilinx_dma_alloc_chan_resources(struct dma_chan *dchan)
*/
if (chan->xdev->dma_config->dmatype == XDMA_TYPE_AXIDMA) {
/* Allocate the buffer descriptors. */
chan->seg_v = dma_zalloc_coherent(chan->dev,
sizeof(*chan->seg_v) *
XILINX_DMA_NUM_DESCS,
&chan->seg_p, GFP_KERNEL);
chan->seg_v = dma_alloc_coherent(chan->dev,
sizeof(*chan->seg_v) * XILINX_DMA_NUM_DESCS,
&chan->seg_p, GFP_KERNEL);
if (!chan->seg_v) {
dev_err(chan->dev,
"unable to allocate channel %d descriptors\n",
@@ -895,9 +894,10 @@ static int xilinx_dma_alloc_chan_resources(struct dma_chan *dchan)
* so allocating a desc segment during channel allocation for
* programming tail descriptor.
*/
chan->cyclic_seg_v = dma_zalloc_coherent(chan->dev,
sizeof(*chan->cyclic_seg_v),
&chan->cyclic_seg_p, GFP_KERNEL);
chan->cyclic_seg_v = dma_alloc_coherent(chan->dev,
sizeof(*chan->cyclic_seg_v),
&chan->cyclic_seg_p,
GFP_KERNEL);
if (!chan->cyclic_seg_v) {
dev_err(chan->dev,
"unable to allocate desc segment for cyclic DMA\n");

6
drivers/dma/xilinx/zynqmp_dma.c
View File

@@ -490,9 +490,9 @@ static int zynqmp_dma_alloc_chan_resources(struct dma_chan *dchan)
list_add_tail(&desc->node, &chan->free_list);
}
chan->desc_pool_v = dma_zalloc_coherent(chan->dev,
(2 * chan->desc_size * ZYNQMP_DMA_NUM_DESCS),
&chan->desc_pool_p, GFP_KERNEL);
chan->desc_pool_v = dma_alloc_coherent(chan->dev,
(2 * chan->desc_size * ZYNQMP_DMA_NUM_DESCS),
&chan->desc_pool_p, GFP_KERNEL);
if (!chan->desc_pool_v)
return -ENOMEM;