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    Subject[PATCH 5.10 399/663] soundwire: debugfs: use controller id instead of link_id
    Date
    From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>

    [ Upstream commit 6d5e7af1f6f5924de5dd1ebe97675c2363100878 ]

    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 id 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 <srinivas.kandagatla@linaro.org>
    Link: https://lore.kernel.org/r/20210115162559.20869-1-srinivas.kandagatla@linaro.org
    Signed-off-by: Vinod Koul <vkoul@kernel.org>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    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 b6cad0d59b7b9..5f9efa42bb25b 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", bus->id);
    bus->debugfs = debugfs_create_dir(name, sdw_debugfs_root);
    }

    --
    2.27.0


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