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ALSA: usb-audio: Declare the common variable in header file
Declare snd_usb_feature_unit_ctl properly in mixer.h. Otherwise it's error-prone. This fixes the sparse warning: sound/usb/mixer.c:1464:25: warning: symbol 'snd_usb_feature_unit_ctl' was not declared. Should it be static? Signed-off-by: Takashi Iwai <tiwai@suse.de>
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@ -109,4 +109,6 @@ int snd_usb_get_cur_mix_value(struct usb_mixer_elem_info *cval,
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extern void snd_usb_mixer_elem_free(struct snd_kcontrol *kctl);
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extern void snd_usb_mixer_elem_free(struct snd_kcontrol *kctl);
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extern struct snd_kcontrol_new *snd_usb_feature_unit_ctl;
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#endif /* __USBMIXER_H */
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#endif /* __USBMIXER_H */
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@ -47,8 +47,6 @@
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#include "mixer_us16x08.h"
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#include "mixer_us16x08.h"
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#include "helper.h"
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#include "helper.h"
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extern struct snd_kcontrol_new *snd_usb_feature_unit_ctl;
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struct std_mono_table {
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struct std_mono_table {
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unsigned int unitid, control, cmask;
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unsigned int unitid, control, cmask;
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int val_type;
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int val_type;
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