[PATCH 4.4 029/117] ALSA: bebob: Use a signed return type for get_formation_index

Greg Kroah-Hartman
2016-02-14T22:25:12Z

From: Lucas Tanure <tanure@linux.com>

commit 07905298e4d5777eb58516cdc242f7ac1ca387a2 upstream.

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>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
sound/firewire/bebob/bebob_stream.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)

--- a/sound/firewire/bebob/bebob_stream.c
+++ b/sound/firewire/bebob/bebob_stream.c
@@ -47,14 +47,16 @@ static const unsigned int bridgeco_freq_
[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 *
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,