diff --git a/drivers/video/fbdev/pvr2fb.c b/drivers/video/fbdev/pvr2fb.c
index f18d457175d9..ceb6ef590597 100644
--- a/drivers/video/fbdev/pvr2fb.c
+++ b/drivers/video/fbdev/pvr2fb.c
@@ -654,8 +654,22 @@ static ssize_t pvr2fb_write(struct fb_info *info, const char *buf,
 
 	ret = get_user_pages_fast((unsigned long)buf, nr_pages, FOLL_WRITE, pages);
 	if (ret < nr_pages) {
-		nr_pages = ret;
-		ret = -EINVAL;
+		if (ret < 0) {
+			/*
+			 *  Clamp the unsigned nr_pages to zero so that the
+			 *  error handling works. And leave ret at whatever
+			 *  -errno value was returned from GUP.
+			 */
+			nr_pages = 0;
+		} else {
+			nr_pages = ret;
+			/*
+			 * Use -EINVAL to represent a mildly desperate guess at
+			 * why we got fewer pages (maybe even zero pages) than
+			 * requested.
+			 */
+			ret = -EINVAL;
+		}
 		goto out_unmap;
 	}