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video: deferred io cleanup

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Make sure the mmap callback is set to NULL in the deferred io
cleanup function. This way we can enable and disable deferred
io on the fly.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: Jaya Kumar <jayakumar.lkml@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Magnus Damm 2008-12-19 15:34:23 +09:00 committed by Paul Mundt
parent 87884bd8ae
commit 6e1038a95b
1 changed files with 3 additions and 0 deletions
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drivers/video/fb_defio.c
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@ -202,6 +202,9 @@ void fb_deferred_io_cleanup(struct fb_info *info)
page = vmalloc_to_page(screen_base + i);
page->mapping = NULL;
}
info->fbops->fb_mmap = NULL;
mutex_destroy(&fbdefio->lock);
}
EXPORT_SYMBOL_GPL(fb_deferred_io_cleanup);