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Subject[PATCH 2/9] ASoC: cs35l41: Handle mdsync_up reg write errors
Date
The return code of regmap_multi_reg_write() call related to "MDSYNC up"
sequence is shadowed by the subsequent regmap_read_poll_timeout()
invocation, which will hit a timeout in case the write operation above
fails.

Make sure cs35l41_global_enable() returns the correct error code instead
of -ETIMEDOUT.

Additionally, to be able to distinguish between the timeouts of
wait_for_completion_timeout() and regmap_read_poll_timeout(), print an
error message for the former and return immediately. This also avoids
having to wait unnecessarily for the second time.

Fixes: f8264c759208 ("ALSA: cs35l41: Poll for Power Up/Down rather than waiting a fixed delay")
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
---
sound/soc/codecs/cs35l41-lib.c | 17 ++++++++++-------
1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/sound/soc/codecs/cs35l41-lib.c b/sound/soc/codecs/cs35l41-lib.c
index a018f1d98428..a6c6bb23b957 100644
--- a/sound/soc/codecs/cs35l41-lib.c
+++ b/sound/soc/codecs/cs35l41-lib.c
@@ -1251,15 +1251,18 @@ int cs35l41_global_enable(struct device *dev, struct regmap *regmap, enum cs35l4

ret = wait_for_completion_timeout(pll_lock, msecs_to_jiffies(1000));
if (ret == 0) {
- ret = -ETIMEDOUT;
- } else {
- regmap_read(regmap, CS35L41_PWR_CTRL3, &pwr_ctrl3);
- pwr_ctrl3 |= CS35L41_SYNC_EN_MASK;
- cs35l41_mdsync_up_seq[0].def = pwr_ctrl3;
- ret = regmap_multi_reg_write(regmap, cs35l41_mdsync_up_seq,
- ARRAY_SIZE(cs35l41_mdsync_up_seq));
+ dev_err(dev, "Timed out waiting for pll_lock\n");
+ return -ETIMEDOUT;
}

+ regmap_read(regmap, CS35L41_PWR_CTRL3, &pwr_ctrl3);
+ pwr_ctrl3 |= CS35L41_SYNC_EN_MASK;
+ cs35l41_mdsync_up_seq[0].def = pwr_ctrl3;
+ ret = regmap_multi_reg_write(regmap, cs35l41_mdsync_up_seq,
+ ARRAY_SIZE(cs35l41_mdsync_up_seq));
+ if (ret)
+ return ret;
+
ret = regmap_read_poll_timeout(regmap, CS35L41_IRQ1_STATUS1,
int_status, int_status & pup_pdn_mask,
1000, 100000);
--
2.41.0
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