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ALSA: bebob: Use a signed return type for get_formation_index 

The return type "unsigned int" was used by the get_formation_index function
despite of the aspect that it will eventually return a negative	error code.
So, change to signed int and get index by reference in the parameters.

Done with the help of Coccinelle.

[Fix the missing braces suggested by Julia Lawall -- tiwai]

Signed-off-by: Lucas Tanure <tanure@linux.com>
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Tested-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Lucas Tanure 2016-01-25 19:30:23 -02:00 committed by Takashi Iwai
parent 5a4ff9ec8d
commit 07905298e4
1 changed files with 9 additions and 5 deletions
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14
sound/firewire/bebob/bebob_stream.c
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@ -47,14 +47,16 @@ static const unsigned int bridgeco_freq_table[] = {
[6] = 0x07,
};
static unsigned int
get_formation_index(unsigned int rate)
static int
get_formation_index(unsigned int rate, unsigned int *index)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(snd_bebob_rate_table); i++) {
if (snd_bebob_rate_table[i] == rate)
return i;
if (snd_bebob_rate_table[i] == rate) {
*index = i;
return 0;
}
}
return -EINVAL;
}
@ -425,7 +427,9 @@ make_both_connections(struct snd_bebob *bebob, unsigned int rate)
goto end;
/* confirm params for both streams */
index = get_formation_index(rate);
err = get_formation_index(rate, &index);
if (err < 0)
goto end;
pcm_channels = bebob->tx_stream_formations[index].pcm;
midi_channels = bebob->tx_stream_formations[index].midi;
err = amdtp_am824_set_parameters(&bebob->tx_stream, rate,