diff --git a/sound/usb/usx2y/us122l.c b/sound/usb/usx2y/us122l.c
index f00b53346abd..a5db0d044ef9 100644
--- a/sound/usb/usx2y/us122l.c
+++ b/sound/usb/usx2y/us122l.c
@@ -180,8 +180,11 @@ static int usb_stream_hwdep_mmap(struct snd_hwdep *hw,
 	guard(mutex)(&us122l->mutex);
 	s = us122l->sk.s;
 	read = offset < s->read_size;
-	if (read && area->vm_flags & VM_WRITE)
-		return -EPERM;
+	if (read) {
+		if (area->vm_flags & VM_WRITE)
+			return -EPERM;
+		vm_flags_clear(area, VM_MAYWRITE);
+	}
 	/* if userspace tries to mmap beyond end of our buffer, fail */
 	if (size > PAGE_ALIGN(read ? s->read_size : s->write_size)) {
 		dev_warn(hw->card->dev, "%s: size %lu > %u\n", __func__,