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From: Bard Liao <yung-chuan.liao@linux.intel.com>
To: alsa-devel@alsa-project.org, vkoul@kernel.org
Cc: vinod.koul@linaro.org, linux-kernel@vger.kernel.org,
	tiwai@suse.de, broonie@kernel.org, gregkh@linuxfoundation.org,
	srinivas.kandagatla@linaro.org,
	pierre-louis.bossart@linux.intel.com, sanyog.r.kale@intel.com,
	bard.liao@intel.com
Subject: [PATCH 05/10] soundwire: stream: don't abort bank switch on Command_Ignored/-ENODATA
Date: Wed, 14 Jul 2021 11:22:04 +0800	[thread overview]
Message-ID: <20210714032209.11284-6-yung-chuan.liao@linux.intel.com> (raw)
In-Reply-To: <20210714032209.11284-1-yung-chuan.liao@linux.intel.com>

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>
---
 drivers/soundwire/stream.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/soundwire/stream.c b/drivers/soundwire/stream.c
index 1a18308f4ef4..d84aaf115c13 100644
--- a/drivers/soundwire/stream.c
+++ b/drivers/soundwire/stream.c
@@ -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;
 	}
-- 
2.17.1


  parent reply	other threads:[~2021-07-14  3:22 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-14  3:21 [PATCH 00/10] soundwire/ASoC: add mockup codec support Bard Liao
2021-07-14  3:22 ` [PATCH 01/10] ASoC: codecs: add SoundWire mockup device support Bard Liao
2021-07-14  3:22 ` [PATCH 02/10] ASoC: soc-acpi: cnl: add table for SoundWire mockup devices Bard Liao
2021-07-14  3:22 ` [PATCH 03/10] ASoC: soc-acpi: tgl: " Bard Liao
2021-07-14  3:22 ` [PATCH 04/10] ASoC: Intel: boards: sof_sdw: add SoundWire mockup codecs for tests Bard Liao
2021-07-14  3:22 ` Bard Liao [this message]
2021-07-14  3:22 ` [PATCH 06/10] soundwire: add flag to ignore all command/control for mockup devices Bard Liao
2021-07-14  3:22 ` [PATCH 07/10] soundwire: bus: squelch error returned by " Bard Liao
2021-07-14  3:22 ` [PATCH 08/10] soundwire: stream: don't program mockup device ports Bard Liao
2021-07-14  3:22 ` [PATCH 09/10] soundwire: cadence: add debugfs interface for PDI loopbacks Bard Liao
2021-07-14  3:22 ` [PATCH 10/10] soundwire: cadence: override PDI configurations to create loopback Bard Liao
2021-07-14 19:33 ` [PATCH 00/10] soundwire/ASoC: add mockup codec support Mark Brown
2021-08-02  5:38   ` Vinod Koul
2021-07-14 19:35 ` (subset) " Mark Brown
2021-07-29  7:07   ` Liao, Bard
2021-08-02  5:39 ` Vinod Koul

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