ASoC: au1x: Fix timeout tests in au1xac97c_ac97_read()

The loop timeout doesn't work because it's a post op and ends with "tmo"
set to -1.  I changed it from a post-op to a pre-op and I changed the
initial the starting value from 5 to 6 so we still iterate 5 times.  I
left the other as it was because it's a large number.

Fixes: b3c70c9ea62a ("ASoC: Alchemy AC97C/I2SC audio support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/sound/soc/au1x/ac97c.c b/sound/soc/au1x/ac97c.c
index 29a97d52e8ad..66d6c52e7761 100644
--- a/sound/soc/au1x/ac97c.c
+++ b/sound/soc/au1x/ac97c.c
@@ -91,8 +91,8 @@ static unsigned short au1xac97c_ac97_read(struct snd_ac97 *ac97,
         do {
                 mutex_lock(&ctx->lock);
 
-                tmo = 5;
-                while ((RD(ctx, AC97_STATUS) & STAT_CP) && tmo--)
+                tmo = 6;
+                while ((RD(ctx, AC97_STATUS) & STAT_CP) && --tmo)
                         udelay(21);     /* wait an ac97 frame time */
                 if (!tmo) {
                         pr_debug("ac97rd timeout #1\n");
@@ -105,7 +105,7 @@ static unsigned short au1xac97c_ac97_read(struct snd_ac97 *ac97,
                  * poll, Forrest, poll...
                  */
                 tmo = 0x10000;
-                while ((RD(ctx, AC97_STATUS) & STAT_CP) && tmo--)
+                while ((RD(ctx, AC97_STATUS) & STAT_CP) && --tmo)
                         asm volatile ("nop");
                 data = RD(ctx, AC97_CMDRESP);