On 2013-04-26 08:10, Stephen Rothwell wrote:
> Hi Tomi,
>
> After merging the omap_dss2 tree, today's linux-next build (powerpc
> ppc64_defconfig) failed like this:
>
> drivers/video/ps3fb.c: In function 'ps3fb_mmap':
> drivers/video/ps3fb.c:710:2: error: implicit declaration of function 'vm_ioremap_memory' [-Werror=implicit-function-declaration]
> drivers/video/ps3fb.c:712:2: error: 'offset' undeclared (first use in this function)
>
> Caused by commit 6ea19860d6c5 ("fbdev/ps3fb: use vm_iomap_memory()").
>
> I have used the omap_dss2 tree from next-20130424 for today.
>
Thanks. Updated patch below. I couldn't right away find where to download a
ppc64 toolchain, so not compile tested...
Tomi
From 11bd5933abe033fb7a3a0d1f1bd2cb4b6df8143f Mon Sep 17 00:00:00 2001
From: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
Date: Thu, 18 Apr 2013 07:52:42 +0300
Subject: [PATCH] fbdev/ps3fb: use vm_iomap_memory()
Use vm_iomap_memory() instead of [io_]remap_pfn_range().
vm_iomap_memory() gives us much simpler API to map memory to userspace,
and reduces possibilities for bugs.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
Cc: Geert Uytterhoeven <Geert.Uytterhoeven@xxxxxxxxxxx>
---
drivers/video/ps3fb.c | 18 ++++++------------
1 file changed, 6 insertions(+), 12 deletions(-)
diff --git a/drivers/video/ps3fb.c b/drivers/video/ps3fb.c
index 920c27b..d9f08c6 100644
--- a/drivers/video/ps3fb.c
+++ b/drivers/video/ps3fb.c
@@ -705,21 +705,15 @@ static int ps3fb_pan_display(struct fb_var_screeninfo *var,
static int ps3fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
{
- unsigned long size, offset;
+ int r;
- size = vma->vm_end - vma->vm_start;
- offset = vma->vm_pgoff << PAGE_SHIFT;
- if (offset + size > info->fix.smem_len)
- return -EINVAL;
-
- offset += info->fix.smem_start;
- if (remap_pfn_range(vma, vma->vm_start, offset >> PAGE_SHIFT,
- size, vma->vm_page_prot))
- return -EAGAIN;
+ r = vm_iomap_memory(vma, info->fix.smem_start, info->fix.smem_len);
dev_dbg(info->device, "ps3fb: mmap framebuffer P(%lx)->V(%lx)\n",
- offset, vma->vm_start);
- return 0;
+ info->fix.smem_start + vma->vm_pgoff << PAGE_SHIFT,
+ vma->vm_start);
+
+ return r;
}
/*
--
1.7.10.4
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