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soundwire: stream: don't abort bank switch on Command_Ignored/-ENODATA

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This change is needed for support of mockup devices, which by
construction will not provide any answer to a bank switch, but it's
also legit for regular cases.

If for some reason a device loses sync and cannot handle a bank
switch, we should go ahead anyways. The devices can always resync
later.

The only case where the error flow should be used is when there is a
Command_Aborted composite answer from SoundWire devices.

Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Link: https://lore.kernel.org/r/20210714032209.11284-6-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Bard Liao 2021-07-14 11:22:04 +08:00 committed by Vinod Koul
parent 13a5635632
commit e6645314eb
1 changed files with 1 additions and 1 deletions
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2
drivers/soundwire/stream.c
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@ -697,7 +697,7 @@ static int sdw_bank_switch(struct sdw_bus *bus, int m_rt_count)
else
ret = sdw_transfer(bus, wr_msg);
if (ret < 0) {
if (ret < 0 && ret != -ENODATA) {
dev_err(bus->dev, "Slave frame_ctrl reg write failed\n");
goto error;
}