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authorLuis R. Rodriguez <mcgrof@suse.com>2016-01-23 05:34:22 +0300
committerIngo Molnar <mingo@kernel.org>2016-03-09 16:57:51 +0300
commitf6e45661f9be546811b62b2b01f32f4bf0c436c0 (patch)
tree6f23a99fb34604c43a04e9f943553e16100bc516 /drivers/dma
parente2857b8f11a289ed2b61d18d0665e05c1053c446 (diff)
downloadlinux-f6e45661f9be546811b62b2b01f32f4bf0c436c0.tar.xz
dma, mm/pat: Rename dma_*_writecombine() to dma_*_wc()
Rename dma_*_writecombine() to dma_*_wc(), so that the naming is coherent across the various write-combining APIs. Keep the old names for compatibility for a while, these can be removed at a later time. A guard is left to enable backporting of the rename, and later remove of the old mapping defines seemlessly. Build tested successfully with allmodconfig. The following Coccinelle SmPL patch was used for this simple transformation: @ rename_dma_alloc_writecombine @ expression dev, size, dma_addr, gfp; @@ -dma_alloc_writecombine(dev, size, dma_addr, gfp) +dma_alloc_wc(dev, size, dma_addr, gfp) @ rename_dma_free_writecombine @ expression dev, size, cpu_addr, dma_addr; @@ -dma_free_writecombine(dev, size, cpu_addr, dma_addr) +dma_free_wc(dev, size, cpu_addr, dma_addr) @ rename_dma_mmap_writecombine @ expression dev, vma, cpu_addr, dma_addr, size; @@ -dma_mmap_writecombine(dev, vma, cpu_addr, dma_addr, size) +dma_mmap_wc(dev, vma, cpu_addr, dma_addr, size) We also keep the old names as compatibility helpers, and guard against their definition to make backporting easier. Generated-by: Coccinelle SmPL Suggested-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: airlied@linux.ie Cc: akpm@linux-foundation.org Cc: benh@kernel.crashing.org Cc: bhelgaas@google.com Cc: bp@suse.de Cc: dan.j.williams@intel.com Cc: daniel.vetter@ffwll.ch Cc: dhowells@redhat.com Cc: julia.lawall@lip6.fr Cc: konrad.wilk@oracle.com Cc: linux-fbdev@vger.kernel.org Cc: linux-pci@vger.kernel.org Cc: luto@amacapital.net Cc: mst@redhat.com Cc: tomi.valkeinen@ti.com Cc: toshi.kani@hp.com Cc: vinod.koul@intel.com Cc: xen-devel@lists.xensource.com Link: http://lkml.kernel.org/r/1453516462-4844-1-git-send-email-mcgrof@do-not-panic.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/iop-adma.c8
-rw-r--r--drivers/dma/mv_xor.c4
-rw-r--r--drivers/dma/qcom_bam_dma.c14
3 files changed, 13 insertions, 13 deletions
diff --git a/drivers/dma/iop-adma.c b/drivers/dma/iop-adma.c
index e4f43125e0fb..f039cfadf17b 100644
--- a/drivers/dma/iop-adma.c
+++ b/drivers/dma/iop-adma.c
@@ -1300,10 +1300,10 @@ static int iop_adma_probe(struct platform_device *pdev)
* note: writecombine gives slightly better performance, but
* requires that we explicitly flush the writes
*/
- adev->dma_desc_pool_virt = dma_alloc_writecombine(&pdev->dev,
- plat_data->pool_size,
- &adev->dma_desc_pool,
- GFP_KERNEL);
+ adev->dma_desc_pool_virt = dma_alloc_wc(&pdev->dev,
+ plat_data->pool_size,
+ &adev->dma_desc_pool,
+ GFP_KERNEL);
if (!adev->dma_desc_pool_virt) {
ret = -ENOMEM;
goto err_free_adev;
diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c
index 14091f878f80..3922a5d56806 100644
--- a/drivers/dma/mv_xor.c
+++ b/drivers/dma/mv_xor.c
@@ -964,8 +964,8 @@ mv_xor_channel_add(struct mv_xor_device *xordev,
* requires that we explicitly flush the writes
*/
mv_chan->dma_desc_pool_virt =
- dma_alloc_writecombine(&pdev->dev, MV_XOR_POOL_SIZE,
- &mv_chan->dma_desc_pool, GFP_KERNEL);
+ dma_alloc_wc(&pdev->dev, MV_XOR_POOL_SIZE, &mv_chan->dma_desc_pool,
+ GFP_KERNEL);
if (!mv_chan->dma_desc_pool_virt)
return ERR_PTR(-ENOMEM);
diff --git a/drivers/dma/qcom_bam_dma.c b/drivers/dma/qcom_bam_dma.c
index 5a250cdc8376..d34aef7a101b 100644
--- a/drivers/dma/qcom_bam_dma.c
+++ b/drivers/dma/qcom_bam_dma.c
@@ -502,8 +502,8 @@ static int bam_alloc_chan(struct dma_chan *chan)
return 0;
/* allocate FIFO descriptor space, but only if necessary */
- bchan->fifo_virt = dma_alloc_writecombine(bdev->dev, BAM_DESC_FIFO_SIZE,
- &bchan->fifo_phys, GFP_KERNEL);
+ bchan->fifo_virt = dma_alloc_wc(bdev->dev, BAM_DESC_FIFO_SIZE,
+ &bchan->fifo_phys, GFP_KERNEL);
if (!bchan->fifo_virt) {
dev_err(bdev->dev, "Failed to allocate desc fifo\n");
@@ -538,8 +538,8 @@ static void bam_free_chan(struct dma_chan *chan)
bam_reset_channel(bchan);
spin_unlock_irqrestore(&bchan->vc.lock, flags);
- dma_free_writecombine(bdev->dev, BAM_DESC_FIFO_SIZE, bchan->fifo_virt,
- bchan->fifo_phys);
+ dma_free_wc(bdev->dev, BAM_DESC_FIFO_SIZE, bchan->fifo_virt,
+ bchan->fifo_phys);
bchan->fifo_virt = NULL;
/* mask irq for pipe/channel */
@@ -1231,9 +1231,9 @@ static int bam_dma_remove(struct platform_device *pdev)
bam_dma_terminate_all(&bdev->channels[i].vc.chan);
tasklet_kill(&bdev->channels[i].vc.task);
- dma_free_writecombine(bdev->dev, BAM_DESC_FIFO_SIZE,
- bdev->channels[i].fifo_virt,
- bdev->channels[i].fifo_phys);
+ dma_free_wc(bdev->dev, BAM_DESC_FIFO_SIZE,
+ bdev->channels[i].fifo_virt,
+ bdev->channels[i].fifo_phys);
}
tasklet_kill(&bdev->task);