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Commit fc7f687a authored by Jonathan Corbet's avatar Jonathan Corbet
Browse files

fbmem: cdev lock_kernel() pushdown 



Signed-off-by: default avatarJonathan Corbet <corbet@lwn.net>
parent 5794e1b1

drivers/video/fbmem.c

+11 −4
Original line number Diff line number Diff line
@@ -1326,20 +1326,27 @@ fb_open(struct inode *inode, struct file *file) 


	if (fbidx >= FB_MAX)

		return -ENODEV;

	lock_kernel();

#ifdef CONFIG_KMOD

	if (!(info = registered_fb[fbidx]))

		try_to_load(fbidx);

#endif /* CONFIG_KMOD */

	if (!(info = registered_fb[fbidx]))

		return -ENODEV;

	if (!try_module_get(info->fbops->owner))

		return -ENODEV;

	if (!(info = registered_fb[fbidx])) {

		res = -ENODEV;

		goto out;

	}

	if (!try_module_get(info->fbops->owner)) {

		res = -ENODEV;

		goto out;

	}

	file->private_data = info;

	if (info->fbops->fb_open) {

		res = info->fbops->fb_open(info,1);

		if (res)

			module_put(info->fbops->owner);

	}

out:

	unlock_kernel();

	return res;

}