If HAVE_ARCH_FB_UNMAPPED_AREA is set and get_fb_unmapped_area function not defined in platform architecture let use a default function.
Signed-off-by: Benjamin Gaignard benjamin.gaignard@linaro.org --- drivers/video/fbdev/core/fbmem.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c index 76c1ad9..54488ee 100644 --- a/drivers/video/fbdev/core/fbmem.c +++ b/drivers/video/fbdev/core/fbmem.c @@ -1492,6 +1492,21 @@ static long fb_compat_ioctl(struct file *file, unsigned int cmd, return 0; }
+#if defined(HAVE_ARCH_FB_UNMAPPED_AREA) && !defined(get_fb_unmapped_area) +unsigned long get_fb_unmapped_area(struct file *filp, + unsigned long addr, unsigned long len, + unsigned long pgoff, unsigned long flags) +{ + struct fb_info * const info = filp->private_data; + unsigned long fb_size = PAGE_ALIGN(info->fix.smem_len); + + if (pgoff > fb_size || len > fb_size - pgoff) + return -EINVAL; + + return (unsigned long)info->screen_base + pgoff; +} +#endif + static const struct file_operations fb_fops = { .owner = THIS_MODULE, .read = fb_read,