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ALSA: usb-audio: Pass direct struct pointer instead of list_head

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Some functions in mixer.c and endpoint.c receive list_head instead of
the object itself.  This is not obvious and rather error-prone.  Let's
pass the proper object directly instead.

The functions in midi.c still receive list_head and this can't be
changed since the object definition isn't exposed to the outside of
midi.c, so left as is.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
2014-10-31 11:24:32 +01:00
parent 4c8c3a4fcc
commit a6cece9d81
5 changed files with 15 additions and 21 deletions
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sound/usb/endpoint.c
+2 -5
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@@ -1002,15 +1002,12 @@ void snd_usb_endpoint_release(struct snd_usb_endpoint *ep)
/**
* snd_usb_endpoint_free: Free the resources of an snd_usb_endpoint
*
* @ep: the list header of the endpoint to free
* @ep: the endpoint to free
*
* This free all resources of the given ep.
*/
void snd_usb_endpoint_free(struct list_head *head)
void snd_usb_endpoint_free(struct snd_usb_endpoint *ep)
{
struct snd_usb_endpoint *ep;
ep = list_entry(head, struct snd_usb_endpoint, list);
kfree(ep);
}