From 75eac387a2539aa6c6bbee3affa23435f2096396 Mon Sep 17 00:00:00 2001 From: Srinivas Kandagatla Date: Tue, 7 Sep 2021 11:53:32 +0100 Subject: [PATCH] soundwire: debugfs: use controller id and link_id for debugfs link_id can be zero and if we have multiple controller instances in a system like Qualcomm debugfs will end-up with duplicate namespace resulting in incorrect debugfs entries. Using bus-id and link-id combination should give a unique debugfs directory entry and should fix below warning too. "debugfs: Directory 'master-0' with parent 'soundwire' already present!" Fixes: bf03473d5bcc ("soundwire: add debugfs support") Signed-off-by: Srinivas Kandagatla Reviewed-by: Pierre-Louis Bossart Link: https://lore.kernel.org/r/20210907105332.1257-1-srinivas.kandagatla@linaro.org Signed-off-by: Vinod Koul --- drivers/soundwire/debugfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/soundwire/debugfs.c b/drivers/soundwire/debugfs.c index b6cad0d59b7b..49900cd207bc 100644 --- a/drivers/soundwire/debugfs.c +++ b/drivers/soundwire/debugfs.c @@ -19,7 +19,7 @@ void sdw_bus_debugfs_init(struct sdw_bus *bus) return; /* create the debugfs master-N */ - snprintf(name, sizeof(name), "master-%d", bus->link_id); + snprintf(name, sizeof(name), "master-%d-%d", bus->id, bus->link_id); bus->debugfs = debugfs_create_dir(name, sdw_debugfs_root); }