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ALSA: line6: Use incremental loop

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Using a decremental loop without particular reasons worsens the
readability a lot.  Use incremental loops instead.

Tested-by: Chris Rorvick <chris@rorvick.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2015-01-23 15:08:40 +01:00
parent f2a76225b9
commit 9fb754b79e
3 changed files with 11 additions and 11 deletions
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4
sound/usb/line6/capture.c
View File

@ -91,7 +91,7 @@ void line6_unlink_audio_in_urbs(struct snd_line6_pcm *line6pcm)
{
unsigned int i;
for (i = LINE6_ISO_BUFFERS; i--;) {
for (i = 0; i < LINE6_ISO_BUFFERS; i++) {
if (test_bit(i, &line6pcm->active_urb_in)) {
if (!test_and_set_bit(i, &line6pcm->unlink_urb_in)) {
struct urb *u = line6pcm->urb_audio_in[i];
@ -114,7 +114,7 @@ void line6_wait_clear_audio_in_urbs(struct snd_line6_pcm *line6pcm)
do {
alive = 0;
for (i = LINE6_ISO_BUFFERS; i--;) {
for (i = 0; i < LINE6_ISO_BUFFERS; i++) {
if (test_bit(i, &line6pcm->active_urb_in))
alive++;
}

6
sound/usb/line6/pcm.c
View File

@ -273,7 +273,7 @@ static int snd_line6_control_playback_get(struct snd_kcontrol *kcontrol,
int i;
struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
for (i = 2; i--;)
for (i = 0; i < 2; i++)
ucontrol->value.integer.value[i] = line6pcm->volume_playback[i];
return 0;
@ -286,7 +286,7 @@ static int snd_line6_control_playback_put(struct snd_kcontrol *kcontrol,
int i, changed = 0;
struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
for (i = 2; i--;)
for (i = 0; i < 2; i++)
if (line6pcm->volume_playback[i] !=
ucontrol->value.integer.value[i]) {
line6pcm->volume_playback[i] =
@ -330,7 +330,7 @@ static void line6_cleanup_pcm(struct snd_pcm *pcm)
int i;
struct snd_line6_pcm *line6pcm = snd_pcm_chip(pcm);
for (i = LINE6_ISO_BUFFERS; i--;) {
for (i = 0; i < LINE6_ISO_BUFFERS; i++) {
if (line6pcm->urb_audio_out[i]) {
usb_kill_urb(line6pcm->urb_audio_out[i]);
usb_free_urb(line6pcm->urb_audio_out[i]);

12
sound/usb/line6/playback.c
View File

@ -297,7 +297,7 @@ void line6_unlink_audio_out_urbs(struct snd_line6_pcm *line6pcm)
{
unsigned int i;
for (i = LINE6_ISO_BUFFERS; i--;) {
for (i = 0; i < LINE6_ISO_BUFFERS; i++) {
if (test_bit(i, &line6pcm->active_urb_out)) {
if (!test_and_set_bit(i, &line6pcm->unlink_urb_out)) {
struct urb *u = line6pcm->urb_audio_out[i];
@ -320,7 +320,7 @@ void line6_wait_clear_audio_out_urbs(struct snd_line6_pcm *line6pcm)
do {
alive = 0;
for (i = LINE6_ISO_BUFFERS; i--;) {
for (i = 0; i < LINE6_ISO_BUFFERS; i++) {
if (test_bit(i, &line6pcm->active_urb_out))
alive++;
}
@ -366,14 +366,14 @@ static void audio_out_callback(struct urb *urb)
line6pcm->last_frame_out = urb->start_frame;
/* find index of URB */
for (index = LINE6_ISO_BUFFERS; index--;)
for (index = 0; index < LINE6_ISO_BUFFERS; index++)
if (urb == line6pcm->urb_audio_out[index])
break;
if (index < 0)
if (index >= LINE6_ISO_BUFFERS)
return; /* URB has been unlinked asynchronously */
for (i = LINE6_ISO_PACKETS; i--;)
for (i = 0; i < LINE6_ISO_PACKETS; i++)
length += urb->iso_frame_desc[i].length;
spin_lock_irqsave(&line6pcm->lock_audio_out, flags);
@ -390,7 +390,7 @@ static void audio_out_callback(struct urb *urb)
clear_bit(index, &line6pcm->active_urb_out);
for (i = LINE6_ISO_PACKETS; i--;)
for (i = 0; i < LINE6_ISO_PACKETS; i++)
if (urb->iso_frame_desc[i].status == -EXDEV) {
shutdown = 1;
break;