From: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx> 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@xxxxxxxxxxxxxxx> Reviewed-by: Rander Wang <rander.wang@xxxxxxxxx> Signed-off-by: Bard Liao <yung-chuan.liao@xxxxxxxxxxxxxxx> --- 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
