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	configuration: avoid endless loop when a key refers to itself
remove one warning from tlv_read routine in control.c
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					 2 changed files with 20 additions and 3 deletions
				
			
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			@ -469,7 +469,7 @@ int snd_ctl_elem_tlv_read(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
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	tlv[0] = -1;
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	tlv[1] = 0;
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	err = snd_ctl_tlv_do(ctl, 0, id, tlv, tlv_size);
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	if (err >= 0 && tlv[0] == -1)
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	if (err >= 0 && tlv[0] == (unsigned int)-1)
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		err = -ENXIO;
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	return err;
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}
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