add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/sound/usb/pcm.h
..
..
@@ -13,6 +13,8 @@
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 		       struct usb_host_interface *alts,
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 		       struct audioformat *fmt);
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 void snd_usb_preallocate_buffer(struct snd_usb_substream *subs);
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+
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 int snd_usb_enable_audio_stream(struct snd_usb_substream *subs,
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-	int datainterval, bool enable);
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+				int datainterval, bool enable);
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+
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 #endif /* __USBAUDIO_PCM_H */