From: Pierre-Louis Bossart Date: Wed, 15 Jan 2020 00:08:44 +0000 (-0600) Subject: soundwire: bus: don't treat CMD_IGNORED as error on ClockStop X-Git-Tag: v5.10.7~2903^2~25^2~23 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=dde73538c9a5f537fe1d6ae4a563507343ec6587;p=platform%2Fkernel%2Flinux-rpi.git soundwire: bus: don't treat CMD_IGNORED as error on ClockStop If a SoundWire link is enabled, but there are no Slave devices exposed in firmware tables for this link, or no Slaves in ATTACHED or ALERT mode, the CMD_IGNORED/-ENODATA error code on a broadcast write is perfectly legit. Filter this case to report errors and let the caller deal with the CMD_IGNORED case. Signed-off-by: Pierre-Louis Bossart Link: https://lore.kernel.org/r/20200115000844.14695-11-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul --- diff --git a/drivers/soundwire/bus.c b/drivers/soundwire/bus.c index 3395abd..1388771 100644 --- a/drivers/soundwire/bus.c +++ b/drivers/soundwire/bus.c @@ -922,8 +922,12 @@ int sdw_bus_clk_stop(struct sdw_bus *bus) ret = sdw_bwrite_no_pm(bus, SDW_BROADCAST_DEV_NUM, SDW_SCP_CTRL, SDW_SCP_CTRL_CLK_STP_NOW); if (ret < 0) { - dev_err(bus->dev, - "ClockStopNow Broadcast message failed %d", ret); + if (ret == -ENODATA) + dev_dbg(bus->dev, + "ClockStopNow Broadcast msg ignored %d", ret); + else + dev_err(bus->dev, + "ClockStopNow Broadcast msg failed %d", ret); return ret; }