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ALSA: usb-audio: Check shutdown at endpoint_set_interface()

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The call of usb_set_interface() and a delay are superfluous when the
device has been already disconnected.  Add a disconnection check
before doing it.

Link: https://patch.msgid.link/20240808091522.31415-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2024-08-08 11:15:21 +02:00
parent c01f381545
commit 9b88d0890e
1 changed files with 3 additions and 0 deletions
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3
sound/usb/endpoint.c
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@ -921,6 +921,9 @@ static int endpoint_set_interface(struct snd_usb_audio *chip,
if (ep->iface_ref->altset == altset)
return 0;
/* already disconnected? */
if (unlikely(atomic_read(&chip->shutdown)))
return -ENODEV;
usb_audio_dbg(chip, "Setting usb interface %d:%d for EP 0x%x\n",
ep->iface, altset, ep->ep_num);