From 9bc87cce9426964aa0cc406419bd6f70e8393ed0 Mon Sep 17 00:00:00 2001 From: Pierre-Louis Bossart Date: Tue, 17 Mar 2020 11:33:16 -0500 Subject: soundwire: cadence: handle error cases with CONFIG_UPDATE config_update() may time out or cannot be use in ClockStopMode Signed-off-by: Pierre-Louis Bossart Link: https://lore.kernel.org/r/20200317163329.25501-5-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul --- drivers/soundwire/cadence_master.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers/soundwire') diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c index 1bfdc1d4fcb1..d7f01d39767b 100644 --- a/drivers/soundwire/cadence_master.c +++ b/drivers/soundwire/cadence_master.c @@ -239,6 +239,11 @@ static int cdns_config_update(struct sdw_cdns *cdns) { int ret; + if (sdw_cdns_is_clock_stop(cdns)) { + dev_err(cdns->dev, "Cannot program MCP_CONFIG_UPDATE in ClockStopMode\n"); + return -EINVAL; + } + ret = cdns_clear_bit(cdns, CDNS_MCP_CONFIG_UPDATE, CDNS_MCP_CONFIG_UPDATE_BIT); if (ret < 0) -- cgit v1.2.3