ALSA: 6fire - Fix pcm rate assignment

Completion of signedness bug for pcm_runtime.rate: variable will never
get assigned a negative value now.

Signed-off-by: Torsten Schenk <torsten.schenk@zoho.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/usb/6fire/pcm.c b/sound/usb/6fire/pcm.c
index ba62c74..2110cbf 100644 (file)
--- a/sound/usb/6fire/pcm.c
+++ b/sound/usb/6fire/pcm.c
@@ -456,7 +456,7 @@ static int usb6fire_pcm_close(struct snd_pcm_substream *alsa_sub)
                /* all substreams closed? if so, stop streaming */
                if (!rt->playback.instance && !rt->capture.instance) {
                        usb6fire_pcm_stream_stop(rt);
-                       rt->rate = -1;
+                       rt->rate = ARRAY_SIZE(rates);
                }
        }
        mutex_unlock(&rt->stream_mutex);
@@ -480,7 +480,6 @@ static int usb6fire_pcm_prepare(struct snd_pcm_substream *alsa_sub)
        struct pcm_runtime *rt = snd_pcm_substream_chip(alsa_sub);
        struct pcm_substream *sub = usb6fire_pcm_get_substream(alsa_sub);
        struct snd_pcm_runtime *alsa_rt = alsa_sub->runtime;
-       int i;
        int ret;
 
        if (rt->panic)
@@ -493,12 +492,10 @@ static int usb6fire_pcm_prepare(struct snd_pcm_substream *alsa_sub)
        sub->period_off = 0;
 
        if (rt->stream_state == STREAM_DISABLED) {
-               for (i = 0; i < ARRAY_SIZE(rates); i++)
-                       if (alsa_rt->rate == rates[i]) {
-                               rt->rate = i;
+               for (rt->rate = 0; rt->rate < ARRAY_SIZE(rates); rt->rate++)
+                       if (alsa_rt->rate == rates[rt->rate])
                                break;
-                       }
-               if (i == ARRAY_SIZE(rates)) {
+               if (rt->rate == ARRAY_SIZE(rates)) {
                        mutex_unlock(&rt->stream_mutex);
                        snd_printk("invalid rate %d in prepare.\n",
                                        alsa_rt->rate);
@@ -613,7 +610,7 @@ int __devinit usb6fire_pcm_init(struct sfire_chip *chip)
 
        rt->chip = chip;
        rt->stream_state = STREAM_DISABLED;
-       rt->rate = -1;
+       rt->rate = ARRAY_SIZE(rates);
        init_waitqueue_head(&rt->stream_wait_queue);
        mutex_init(&rt->stream_mutex);