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Commit f6e45661 authored by Luis R. Rodriguez's avatar Luis R. Rodriguez Committed by Ingo Molnar
Browse files

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: default avatarIngo Molnar <mingo@kernel.org>
Signed-off-by: default avatarLuis 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: default avatarIngo Molnar <mingo@kernel.org>
parent e2857b8f

arch/arm/mach-lpc32xx/phy3250.c

+6 −7
Original line number Diff line number Diff line
@@ -86,8 +86,8 @@ static int lpc32xx_clcd_setup(struct clcd_fb *fb) 
{

	dma_addr_t dma;



	fb->fb.screen_base = dma_alloc_writecombine(&fb->dev->dev,

		PANEL_SIZE, &dma, GFP_KERNEL);

	fb->fb.screen_base = dma_alloc_wc(&fb->dev->dev, PANEL_SIZE, &dma,

					  GFP_KERNEL);

	if (!fb->fb.screen_base) {

		printk(KERN_ERR "CLCD: unable to map framebuffer\n");

		return -ENOMEM;
@@ -116,15 +116,14 @@ static int lpc32xx_clcd_setup(struct clcd_fb *fb) 


static int lpc32xx_clcd_mmap(struct clcd_fb *fb, struct vm_area_struct *vma)

{

	return dma_mmap_writecombine(&fb->dev->dev, vma,

		fb->fb.screen_base, fb->fb.fix.smem_start,

		fb->fb.fix.smem_len);

	return dma_mmap_wc(&fb->dev->dev, vma, fb->fb.screen_base,

			   fb->fb.fix.smem_start, fb->fb.fix.smem_len);

}



static void lpc32xx_clcd_remove(struct clcd_fb *fb)

{

	dma_free_writecombine(&fb->dev->dev, fb->fb.fix.smem_len,

		fb->fb.screen_base, fb->fb.fix.smem_start);

	dma_free_wc(&fb->dev->dev, fb->fb.fix.smem_len, fb->fb.screen_base,

		    fb->fb.fix.smem_start);

}



/*

arch/arm/mach-netx/fb.c

+6 −8
Original line number Diff line number Diff line
@@ -42,8 +42,8 @@ int netx_clcd_setup(struct clcd_fb *fb) 


	fb->panel = netx_panel;



	fb->fb.screen_base = dma_alloc_writecombine(&fb->dev->dev, 1024*1024,

						    &dma, GFP_KERNEL);

	fb->fb.screen_base = dma_alloc_wc(&fb->dev->dev, 1024 * 1024, &dma,

					  GFP_KERNEL);

	if (!fb->fb.screen_base) {

		printk(KERN_ERR "CLCD: unable to map framebuffer\n");

		return -ENOMEM;
@@ -57,16 +57,14 @@ int netx_clcd_setup(struct clcd_fb *fb) 


int netx_clcd_mmap(struct clcd_fb *fb, struct vm_area_struct *vma)

{

	return dma_mmap_writecombine(&fb->dev->dev, vma,

				     fb->fb.screen_base,

				     fb->fb.fix.smem_start,

				     fb->fb.fix.smem_len);

	return dma_mmap_wc(&fb->dev->dev, vma, fb->fb.screen_base,

			   fb->fb.fix.smem_start, fb->fb.fix.smem_len);

}



void netx_clcd_remove(struct clcd_fb *fb)

{

	dma_free_writecombine(&fb->dev->dev, fb->fb.fix.smem_len,

			      fb->fb.screen_base, fb->fb.fix.smem_start);

	dma_free_wc(&fb->dev->dev, fb->fb.fix.smem_len, fb->fb.screen_base,

		    fb->fb.fix.smem_start);

}



static AMBA_AHB_DEVICE(fb, "fb", 0, 0x00104000, { NETX_IRQ_LCD }, NULL);

arch/arm/mach-nspire/clcd.c

+6 −7
Original line number Diff line number Diff line
@@ -90,8 +90,8 @@ int nspire_clcd_setup(struct clcd_fb *fb) 
	panel_size = ((panel->mode.xres * panel->mode.yres) * panel->bpp) / 8;

	panel_size = ALIGN(panel_size, PAGE_SIZE);



	fb->fb.screen_base = dma_alloc_writecombine(&fb->dev->dev,

		panel_size, &dma, GFP_KERNEL);

	fb->fb.screen_base = dma_alloc_wc(&fb->dev->dev, panel_size, &dma,

					  GFP_KERNEL);



	if (!fb->fb.screen_base) {

		pr_err("CLCD: unable to map framebuffer\n");
@@ -107,13 +107,12 @@ int nspire_clcd_setup(struct clcd_fb *fb) 


int nspire_clcd_mmap(struct clcd_fb *fb, struct vm_area_struct *vma)

{

	return dma_mmap_writecombine(&fb->dev->dev, vma,

		fb->fb.screen_base, fb->fb.fix.smem_start,

		fb->fb.fix.smem_len);

	return dma_mmap_wc(&fb->dev->dev, vma, fb->fb.screen_base,

			   fb->fb.fix.smem_start, fb->fb.fix.smem_len);

}



void nspire_clcd_remove(struct clcd_fb *fb)

{

	dma_free_writecombine(&fb->dev->dev, fb->fb.fix.smem_len,

		fb->fb.screen_base, fb->fb.fix.smem_start);

	dma_free_wc(&fb->dev->dev, fb->fb.fix.smem_len, fb->fb.screen_base,

		    fb->fb.fix.smem_start);

}

drivers/dma/iop-adma.c

+4 −4
Original line number Diff line number Diff line
@@ -1300,7 +1300,7 @@ 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,

	adev->dma_desc_pool_virt = dma_alloc_wc(&pdev->dev,

						plat_data->pool_size,

						&adev->dma_desc_pool,

						GFP_KERNEL);

drivers/dma/mv_xor.c

+2 −2
Original line number Diff line number Diff line
@@ -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);