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>
diff --git a/sound/pci/riptide/riptide.c b/sound/pci/riptide/riptide.c
index 6f10344..e51a5ef 100644
--- a/sound/pci/riptide/riptide.c
+++ b/sound/pci/riptide/riptide.c
@@ -889,7 +889,7 @@
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 @@
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 @@
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 @@
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");
}