Commit cae8a12f authored Jan 09, 2006 by Thomas Koeller Committed by Linus Torvalds Jan 10, 2006

[PATCH] non-linear frame buffer read/write access



While the code in fbmem.c allows for hooking read/write access to
non-linear frame buffers by means of fb_read and fb_write in struct fb_ops,
I could not find a way tho access the actual frame buffer memory from
within these routines.  I therefore had to patch fbmem.c, to be able to
retrieve a pointer to struct fb_info from the 'file' argument to these
functions.

The second hunk of the patch is not strictly required, I only did that for
symmetry reasons (and the code is somewhat shorter).

Signed-off-by: Thomas Koeller <thomas@koeller.dyndns.org>
Acked-by: "Antonino A. Daplas" <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

parent 74b4f042

drivers/video/fbmem.c

+2 −3

Original line number	Diff line number	Diff line
		@@ -1234,6 +1234,7 @@ fb_open(struct inode inode, struct file file)
		return -ENODEV;
		if (!try_module_get(info->fbops->owner))
		return -ENODEV;
		file->private_data = info;
		if (info->fbops->fb_open) {
		res = info->fbops->fb_open(info,1);
		if (res)
		@@ -1245,11 +1246,9 @@ fb_open(struct inode inode, struct file file)
		static int
		fb_release(struct inode inode, struct file file)
		{
		int fbidx = iminor(inode);
		struct fb_info *info;
		struct fb_info * const info = file->private_data;

		lock_kernel();
		info = registered_fb[fbidx];
		if (info->fbops->fb_release)
		info->fbops->fb_release(info,1);
		module_put(info->fbops->owner);

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