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| author | Charles Keepax <ckeepax@opensource.wolfsonmicro.com> | 2013-12-18 09:25:49 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2013-12-18 11:22:25 +0000 |
| commit | 939fd1e8d9deff206f12bd9d4e54aa7a4bd0ffd6 (patch) | |
| tree | 8e8386e69e9a108bbdc2dda91229b2ef86f2d9c4 /sound | |
| parent | 6ce4eac1f600b34f2f7f58f9cd8f0503d79e42ae (diff) | |
| download | linux-stable-939fd1e8d9deff206f12bd9d4e54aa7a4bd0ffd6.tar.gz linux-stable-939fd1e8d9deff206f12bd9d4e54aa7a4bd0ffd6.tar.bz2 linux-stable-939fd1e8d9deff206f12bd9d4e54aa7a4bd0ffd6.zip | |
ASoC: wm_adsp: Add small delay while polling DSP RAM start
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>
Cc: stable@vger.kernel.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 46ec0e9744d4..4fbcab63e61f 100644 --- a/sound/soc/codecs/wm_adsp.c +++ b/sound/soc/codecs/wm_adsp.c @@ -1474,13 +1474,17 @@ 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"); |