diff --git a/drivers/usb/gadget/function/uvc_configfs.c b/drivers/usb/gadget/function/uvc_configfs.c
index 9bf0e985acfab531dfe70989a7000c1a0fe09caf..d16c04d2961b6d8dcbcbb4acf70e9dc1e9954ac8 100644
--- a/drivers/usb/gadget/function/uvc_configfs.c
+++ b/drivers/usb/gadget/function/uvc_configfs.c
@@ -92,10 +92,10 @@ static int __uvcg_iter_item_entries(const char *page, size_t len,
 
 	while (pg - page < len) {
 		i = 0;
-		while (i < sizeof(buf) && (pg - page < len) &&
+		while (i < bufsize && (pg - page < len) &&
 		       *pg != '\0' && *pg != '\n')
 			buf[i++] = *pg++;
-		if (i == sizeof(buf)) {
+		if (i == bufsize) {
 			ret = -EINVAL;
 			goto out_free_buf;
 		}