[PATCH AUTOSEL for 4.9 215/219] ASoC: nuc900: Fix a loop timeout test

From: Sasha Levin
Date: Sat Mar 03 2018 - 18:23:29 EST


From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

[ Upstream commit 65a12b3aafed5fc59f4ce41b22b752b1729e6701 ]

We should be finishing the loop with timeout set to zero but because
this is a post-op we finish with timeout == -1.

Fixes: 1082e2703a2d ("ASoC: NUC900/audio: add nuc900 audio driver support")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
---
sound/soc/nuc900/nuc900-ac97.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/nuc900/nuc900-ac97.c b/sound/soc/nuc900/nuc900-ac97.c
index b6615affe571..fde974d52bb2 100644
--- a/sound/soc/nuc900/nuc900-ac97.c
+++ b/sound/soc/nuc900/nuc900-ac97.c
@@ -67,7 +67,7 @@ static unsigned short nuc900_ac97_read(struct snd_ac97 *ac97,

/* polling the AC_R_FINISH */
while (!(AUDIO_READ(nuc900_audio->mmio + ACTL_ACCON) & AC_R_FINISH)
- && timeout--)
+ && --timeout)
mdelay(1);

if (!timeout) {
@@ -121,7 +121,7 @@ static void nuc900_ac97_write(struct snd_ac97 *ac97, unsigned short reg,

/* polling the AC_W_FINISH */
while ((AUDIO_READ(nuc900_audio->mmio + ACTL_ACCON) & AC_W_FINISH)
- && timeout--)
+ && --timeout)
mdelay(1);

if (!timeout)
--
2.14.1