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authorPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>2020-03-17 19:33:16 +0300
committerVinod Koul <vkoul@kernel.org>2020-03-19 10:13:03 +0300
commit9bc87cce9426964aa0cc406419bd6f70e8393ed0 (patch)
treefc6dfc2ce6b090d2040a74fc04a28f4b30042f32 /drivers/soundwire/cadence_master.c
parent5a885c52cfe6e5491fb7ce1d93d1a3d8f6fd6da9 (diff)
downloadlinux-9bc87cce9426964aa0cc406419bd6f70e8393ed0.tar.xz
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 <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20200317163329.25501-5-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/soundwire/cadence_master.c')
-rw-r--r--drivers/soundwire/cadence_master.c5
1 files changed, 5 insertions, 0 deletions
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)