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Subject[PATCH 07/10] soundwire: bus: squelch error returned by mockup devices
Date
From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>

All read and writes from/to SoundWire mockup devices will return
-ENODATA/Command_Ignored, this patch forces a Command_OK result to let
the bus perform the required configurations, e.g. for the Data Ports,
which will only have an effect on the Master side.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
---
drivers/soundwire/bus.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/soundwire/bus.c b/drivers/soundwire/bus.c
index 278a4fbdb88d..baa236cb5484 100644
--- a/drivers/soundwire/bus.c
+++ b/drivers/soundwire/bus.c
@@ -390,7 +390,10 @@ sdw_nread_no_pm(struct sdw_slave *slave, u32 addr, size_t count, u8 *val)
if (ret < 0)
return ret;

- return sdw_transfer(slave->bus, &msg);
+ ret = sdw_transfer(slave->bus, &msg);
+ if (slave->is_mockup_device)
+ ret = 0;
+ return ret;
}

static int
@@ -404,7 +407,10 @@ sdw_nwrite_no_pm(struct sdw_slave *slave, u32 addr, size_t count, const u8 *val)
if (ret < 0)
return ret;

- return sdw_transfer(slave->bus, &msg);
+ ret = sdw_transfer(slave->bus, &msg);
+ if (slave->is_mockup_device)
+ ret = 0;
+ return ret;
}

int sdw_write_no_pm(struct sdw_slave *slave, u32 addr, u8 value)
--
2.17.1
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