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    Subject[PATCH 4.9 064/105] spi: dw: Make debugfs name unique between instances
    Date
    4.9-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Phil Reid <preid@electromag.com.au>


    [ Upstream commit 13288bdf4adbaa6bd1267f10044c1bc25d90ce7f ]

    Some system have multiple dw devices. Currently the driver uses a
    fixed name for the debugfs dir. Append dev name to the debugfs dir
    name to make it unique.

    Signed-off-by: Phil Reid <preid@electromag.com.au>
    Signed-off-by: Mark Brown <broonie@kernel.org>
    Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    drivers/spi/spi-dw.c | 5 ++++-
    1 file changed, 4 insertions(+), 1 deletion(-)

    --- a/drivers/spi/spi-dw.c
    +++ b/drivers/spi/spi-dw.c
    @@ -107,7 +107,10 @@ static const struct file_operations dw_s

    static int dw_spi_debugfs_init(struct dw_spi *dws)
    {
    - dws->debugfs = debugfs_create_dir("dw_spi", NULL);
    + char name[128];
    +
    + snprintf(name, 128, "dw_spi-%s", dev_name(&dws->master->dev));
    + dws->debugfs = debugfs_create_dir(name, NULL);
    if (!dws->debugfs)
    return -ENOMEM;


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