ALSA: usb-audio: Use pcm_for_each_format() macro for PCM format iterations

The new macro can fix the sparse warnings gracefully:
  sound/usb/proc.c:73:31: warning: restricted snd_pcm_format_t degrades to integer
  sound/usb/proc.c:73:38: warning: restricted snd_pcm_format_t degrades to integer
  sound/usb/proc.c:73:61: warning: restricted snd_pcm_format_t degrades to integer

No functional changes, just sparse warning fixes.

Link: https://lore.kernel.org/r/20200206163945.6797-4-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/usb/proc.c b/sound/usb/proc.c
index ffbf4bd9208c45b8f73d2556d80f647238e6c9f9..4174ad11fca64217e82ff8d4ffe7ad68db9104ec 100644 (file)
--- a/sound/usb/proc.c
+++ b/sound/usb/proc.c
@@ -70,7 +70,7 @@ static void proc_dump_substream_formats(struct snd_usb_substream *subs, struct s
                snd_iprintf(buffer, "  Interface %d\n", fp->iface);
                snd_iprintf(buffer, "    Altset %d\n", fp->altsetting);
                snd_iprintf(buffer, "    Format:");
-               for (fmt = 0; fmt <= SNDRV_PCM_FORMAT_LAST; ++fmt)
+               pcm_for_each_format(fmt)
                        if (fp->formats & pcm_format_to_bits(fmt))
                                snd_iprintf(buffer, " %s",
                                            snd_pcm_format_name(fmt));