787 long drm_ioctl_kernel(struct file *file, drm_ioctl_t *func, void *kdata,  in drm_ioctl_kernel()  argument
804 	return func(dev, kdata, file_priv);  in drm_ioctl_kernel()
831 	char *kdata = NULL;  in drm_ioctl()  local
884 		kdata = stack_kdata;  in drm_ioctl()
886 		kdata = kmalloc(ksize, GFP_KERNEL);  in drm_ioctl()
887 		if (!kdata) {  in drm_ioctl()
893 	if (copy_from_user(kdata, (void __user *)arg, in_size) != 0) {  in drm_ioctl()
899 		memset(kdata + in_size, 0, ksize - in_size);  in drm_ioctl()
901 	retcode = drm_ioctl_kernel(filp, func, kdata, ioctl->flags);  in drm_ioctl()
902 	if (copy_to_user((void __user *)arg, kdata, out_size) != 0)  in drm_ioctl()
913 	if (kdata != stack_kdata)  in drm_ioctl()
914 		kfree(kdata);  in drm_ioctl()