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ALSA: usb-audio: Check max frame size for implicit feedback mode, too

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When the packet sizes are taken from the capture stream in the
implicit feedback mode, the sizes might be larger than the upper
boundary defined by the descriptor.  As already done for other
transfer modes, we have to cap the sizes accordingly at sending,
otherwise this would lead to an error in USB core at submission of
URBs.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=221076
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20260225085233.316306-3-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2026-02-25 09:52:29 +01:00
parent 7fe8dec3f6
commit 7cb2a5422f
1 changed files with 1 additions and 0 deletions
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sound/usb/endpoint.c
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@ -221,6 +221,7 @@ int snd_usb_endpoint_next_packet_size(struct snd_usb_endpoint *ep,
packet = ctx->packet_size[idx];
if (packet) {
packet = min(packet, ep->maxframesize);
if (avail && packet >= avail)
return -EAGAIN;
return packet;