diff options
| author | Charles Keepax <ckeepax@opensource.wolfsonmicro.com> | 2013-12-18 09:25:49 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-01-09 12:25:07 -0800 |
| commit | ef1943b16e3a1bdde91525e74a1a188a17138184 (patch) | |
| tree | 9cfa7402ee2d5e7183d78788c14f61011a931ddb /sound | |
| parent | 3d561e8e6fbd5353085b06cf15366fc42c51d3f1 (diff) | |
ASoC: wm_adsp: Add small delay while polling DSP RAM start
commit 939fd1e8d9deff206f12bd9d4e54aa7a4bd0ffd6 upstream.
Some devices are getting very close to the limit whilst polling the RAM
start, this patch adds a small delay to this loop to give a longer
startup timeout.
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/codecs/wm_adsp.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c index 60b6b593c407..0d5de6003849 100644 --- a/sound/soc/codecs/wm_adsp.c +++ b/sound/soc/codecs/wm_adsp.c @@ -1466,13 +1466,17 @@ static int wm_adsp2_ena(struct wm_adsp *dsp) return ret; /* Wait for the RAM to start, should be near instantaneous */ - count = 0; - do { + for (count = 0; count < 10; ++count) { ret = regmap_read(dsp->regmap, dsp->base + ADSP2_STATUS1, &val); if (ret != 0) return ret; - } while (!(val & ADSP2_RAM_RDY) && ++count < 10); + + if (val & ADSP2_RAM_RDY) + break; + + msleep(1); + } if (!(val & ADSP2_RAM_RDY)) { adsp_err(dsp, "Failed to start DSP RAM\n"); |