soundwire: bus: filter out more -EDATA errors on clock stop

We've added quite a few filters to avoid throwing errors if a Device
does not respond to commands during the clock stop sequences, but we
missed one.

This will lead to an isolated message
[ 6115.294412] soundwire sdw-master-1: SDW_SCP_STAT bread failed:-61

The callers already filter this error code, so there's no point in
keeping it at the lower level.

Since this is a recoverable error, make this dev_err() conditional and
only log cases with Command Failed.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20210714014209.17357-1-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/soundwire/bus.c b/drivers/soundwire/bus.c
index 3e6d4ad..278a4fb 100644 (file)
--- a/drivers/soundwire/bus.c
+++ b/drivers/soundwire/bus.c
@@ -896,7 +896,8 @@ static int sdw_bus_wait_for_clk_prep_deprep(struct sdw_bus *bus, u16 dev_num)
        do {
                val = sdw_bread_no_pm(bus, dev_num, SDW_SCP_STAT);
                if (val < 0) {
-                       dev_err(bus->dev, "SDW_SCP_STAT bread failed:%d\n", val);
+                       if (val != -ENODATA)
+                               dev_err(bus->dev, "SDW_SCP_STAT bread failed:%d\n", val);
                        return val;
                }
                val &= SDW_SCP_STAT_CLK_STP_NF;