[POC][PATCH 64/83] drivers/video/fbdev: switch to get_free_pages()

[Al Viro <viro@ZenIV.linux.org.uk>]

From: Al Viro <viro@zeniv.linux.org.uk>

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 drivers/video/fbdev/grvga.c               | 20 +++++++++-----------
 drivers/video/fbdev/vermilion/vermilion.c | 17 ++++++++---------
 drivers/video/fbdev/vermilion/vermilion.h |  2 +-
 3 files changed, 18 insertions(+), 21 deletions(-)

diff --git a/drivers/video/fbdev/grvga.c b/drivers/video/fbdev/grvga.c
index b471f92..28fd657 100644
--- a/drivers/video/fbdev/grvga.c
+++ b/drivers/video/fbdev/grvga.c
@@ -333,7 +333,7 @@ static int grvga_probe(struct platform_device *dev)
 {
 	struct fb_info *info;
 	int retval = -ENOMEM;
-	unsigned long virtual_start;
+	void *virtual_start;
 	unsigned long grvga_fix_addr = 0;
 	unsigned long physical_start = 0;
 	unsigned long grvga_mem_size = 0;
@@ -435,8 +435,7 @@ static int grvga_probe(struct platform_device *dev)
 			goto dealloc_cmap;
 		}
 
-		virtual_start = (unsigned long) ioremap(physical_start, grvga_mem_size);
-
+		virtual_start = ioremap(physical_start, grvga_mem_size);
 		if (!virtual_start) {
 			dev_err(&dev->dev, "error mapping framebuffer memory\n");
 			retval = -ENOMEM;
@@ -444,10 +443,9 @@ static int grvga_probe(struct platform_device *dev)
 		}
 	} else {	/* Allocate frambuffer memory */
 
-		unsigned long page;
+		void *page;
 
-		virtual_start = (unsigned long) __get_free_pages(GFP_DMA,
-								 get_order(grvga_mem_size));
+		virtual_start = get_free_pages(GFP_DMA, get_order(grvga_mem_size));
 		if (!virtual_start) {
 			dev_err(&dev->dev,
 				"unable to allocate framebuffer memory (%lu bytes)\n",
@@ -456,13 +454,13 @@ static int grvga_probe(struct platform_device *dev)
 			goto dealloc_cmap;
 		}
 
-		physical_start = dma_map_single(&dev->dev, (void *)virtual_start, grvga_mem_size, DMA_TO_DEVICE);
+		physical_start = dma_map_single(&dev->dev, virtual_start, grvga_mem_size, DMA_TO_DEVICE);
 
 		/* Set page reserved so that mmap will work. This is necessary
 		 * since we'll be remapping normal memory.
 		 */
 		for (page = virtual_start;
-		     page < PAGE_ALIGN(virtual_start + grvga_mem_size);
+		     page < virtual_start + ALIGN(grvga_mem_size, PAGE_SIZE);
 		     page += PAGE_SIZE) {
 			SetPageReserved(virt_to_page(page));
 		}
@@ -470,7 +468,7 @@ static int grvga_probe(struct platform_device *dev)
 		par->fb_alloced = 1;
 	}
 
-	memset((unsigned long *) virtual_start, 0, grvga_mem_size);
+	memset(virtual_start, 0, grvga_mem_size);
 
 	info->screen_base = (char __iomem *) virtual_start;
 	info->fix.smem_start = physical_start;
@@ -497,9 +495,9 @@ static int grvga_probe(struct platform_device *dev)
 
 free_mem:
 	if (grvga_fix_addr)
-		iounmap((void *)virtual_start);
+		iounmap(virtual_start);
 	else
-		kfree((void *)virtual_start);
+		kfree(virtual_start);
 dealloc_cmap:
 	fb_dealloc_cmap(&info->cmap);
 unmap_regs:
diff --git a/drivers/video/fbdev/vermilion/vermilion.c b/drivers/video/fbdev/vermilion/vermilion.c
index 0882f41..4e9e02f 100644
--- a/drivers/video/fbdev/vermilion/vermilion.c
+++ b/drivers/video/fbdev/vermilion/vermilion.c
@@ -88,7 +88,7 @@ static int vmlfb_alloc_vram_area(struct vram_area *va, unsigned max_order,
 				 unsigned min_order)
 {
 	gfp_t flags;
-	unsigned long i;
+	void *i;
 
 	max_order++;
 	do {
@@ -100,14 +100,13 @@ static int vmlfb_alloc_vram_area(struct vram_area *va, unsigned max_order,
 		 */
 
 		flags = __GFP_DMA | __GFP_HIGH | __GFP_KSWAPD_RECLAIM;
-		va->logical =
-			 __get_free_pages(flags, --max_order);
-	} while (va->logical == 0 && max_order > min_order);
+		va->logical = get_free_pages(flags, --max_order);
+	} while (va->logical == NULL && max_order > min_order);
 
 	if (!va->logical)
 		return -ENOMEM;
 
-	va->phys = virt_to_phys((void *)va->logical);
+	va->phys = virt_to_phys(va->logical);
 	va->size = PAGE_SIZE << max_order;
 	va->order = max_order;
 
@@ -118,7 +117,7 @@ static int vmlfb_alloc_vram_area(struct vram_area *va, unsigned max_order,
 	 * compound page).
 	 */
 
-	memset((void *)va->logical, 0x00, va->size);
+	memset(va->logical, 0x00, va->size);
 	for (i = va->logical; i < va->logical + va->size; i += PAGE_SIZE) {
 		get_page(virt_to_page(i));
 	}
@@ -143,7 +142,7 @@ static int vmlfb_alloc_vram_area(struct vram_area *va, unsigned max_order,
 
 static void vmlfb_free_vram_area(struct vram_area *va)
 {
-	unsigned long j;
+	void *j;
 
 	if (va->logical) {
 
@@ -167,9 +166,9 @@ static void vmlfb_free_vram_area(struct vram_area *va)
 		printk(KERN_DEBUG MODULE_NAME
 		       ": Freeing %ld bytes vram area at 0x%08lx\n",
 		       va->size, va->phys);
-		free_pages((void *)va->logical, va->order);
+		free_pages(va->logical, va->order);
 
-		va->logical = 0;
+		va->logical = NULL;
 	}
 }
 
diff --git a/drivers/video/fbdev/vermilion/vermilion.h b/drivers/video/fbdev/vermilion/vermilion.h
index 43d11ec..65f1a63 100644
--- a/drivers/video/fbdev/vermilion/vermilion.h
+++ b/drivers/video/fbdev/vermilion/vermilion.h
@@ -203,7 +203,7 @@ struct vml_par {
 };
 
 struct vram_area {
-	unsigned long logical;
+	void *logical;
 	unsigned long phys;
 	unsigned long size;
 	unsigned order;
-- 
2.1.4