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authorRoel Kluin <roel.kluin@gmail.com>2009-05-13 20:44:07 +0200
committerTakashi Iwai <tiwai@suse.de>2009-05-14 08:41:40 +0200
commit1b1cc7f21c51cc81992a547b59e174dd8c44d1bd (patch)
treeb1e9ee0cc5d8132078a5d5557e1292d0049fb5aa /sound
parentb452e08e73c0e3dbb0be82130217be4b7084299e (diff)
ALSA: riptide: postfix increment and off by one
With a postfix increment these variables are incremented beyond CMDIF_TIMEOUT / MAX_WRITE_RETRY. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
-rw-r--r--sound/pci/riptide/riptide.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/sound/pci/riptide/riptide.c b/sound/pci/riptide/riptide.c
index 6f1034417a0..e51a5ef1954 100644
--- a/sound/pci/riptide/riptide.c
+++ b/sound/pci/riptide/riptide.c
@@ -889,7 +889,7 @@ static int sendcmd(struct cmdif *cif, u32 flags, u32 cmd, u32 parm,
spin_lock_irqsave(&cif->lock, irqflags);
while (i++ < CMDIF_TIMEOUT && !IS_READY(cif->hwport))
udelay(10);
- if (i >= CMDIF_TIMEOUT) {
+ if (i > CMDIF_TIMEOUT) {
err = -EBUSY;
goto errout;
}
@@ -907,8 +907,10 @@ static int sendcmd(struct cmdif *cif, u32 flags, u32 cmd, u32 parm,
WRITE_PORT_ULONG(cmdport->data1, cmd); /* write cmd */
if ((flags & RESP) && ret) {
while (!IS_DATF(cmdport) &&
- time++ < CMDIF_TIMEOUT)
+ time < CMDIF_TIMEOUT) {
udelay(10);
+ time++;
+ }
if (time < CMDIF_TIMEOUT) { /* read response */
ret->retlongs[0] =
READ_PORT_ULONG(cmdport->data1);
@@ -1454,7 +1456,7 @@ static int snd_riptide_trigger(struct snd_pcm_substream *substream, int cmd)
SEND_GPOS(cif, 0, data->id, &rptr);
udelay(1);
} while (i != rptr.retlongs[1] && j++ < MAX_WRITE_RETRY);
- if (j >= MAX_WRITE_RETRY)
+ if (j > MAX_WRITE_RETRY)
snd_printk(KERN_ERR "Riptide: Could not stop stream!");
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
@@ -1783,7 +1785,7 @@ snd_riptide_codec_write(struct snd_ac97 *ac97, unsigned short reg,
SEND_SACR(cif, val, reg);
SEND_RACR(cif, reg, &rptr);
} while (rptr.retwords[1] != val && i++ < MAX_WRITE_RETRY);
- if (i == MAX_WRITE_RETRY)
+ if (i > MAX_WRITE_RETRY)
snd_printdd("Write AC97 reg failed\n");
}