From e949fd266cfa1dcca7caa3faa698578c4ffd26d6 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 16 Feb 2026 15:12:05 +0100 Subject: [PATCH] ALSA: usb-audio: Update the number of packets properly at receiving [ Upstream commit cf044e44190234a41a788de1cdbb6c21f4a52e1e ] At receiving the packets from the implicit feedback source, we didn't update ctx->packets field but only the ctx->packet_size[] data. In exceptional cases, this might lead to unexpectedly superfluous data transfer (although this won't happen usually due to the nature of USB isochronous transfer). Fix it to update the field properly. Link: https://patch.msgid.link/20260216141209.1849200-2-tiwai@suse.de Signed-off-by: Takashi Iwai Signed-off-by: Sasha Levin --- sound/usb/endpoint.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sound/usb/endpoint.c b/sound/usb/endpoint.c index cc15624ecaff..6741ce368dd1 100644 --- a/sound/usb/endpoint.c +++ b/sound/usb/endpoint.c @@ -481,6 +481,7 @@ int snd_usb_queue_pending_output_urbs(struct snd_usb_endpoint *ep, /* copy over the length information */ if (implicit_fb) { + ctx->packets = packet->packets; for (i = 0; i < packet->packets; i++) ctx->packet_size[i] = packet->packet_size[i]; }