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    Subject[PATCH 5.15 211/530] drm/mipi-dsi: Detach devices when removing the host
    Date
    From: Maxime Ripard <maxime@cerno.tech>

    [ Upstream commit 668a8f17b5290d04ef7343636a5588a0692731a1 ]

    Whenever the MIPI-DSI host is unregistered, the code of
    mipi_dsi_host_unregister() loops over every device currently found on that
    bus and will unregister it.

    However, it doesn't detach it from the bus first, which leads to all kind
    of resource leaks if the host wants to perform some clean up whenever a
    device is detached.

    Fixes: 068a00233969 ("drm: Add MIPI DSI bus support")
    Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
    Signed-off-by: Maxime Ripard <maxime@cerno.tech>
    Link: https://lore.kernel.org/r/20220711173939.1132294-2-maxime@cerno.tech
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/gpu/drm/drm_mipi_dsi.c | 1 +
    1 file changed, 1 insertion(+)

    diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c
    index 5dd475e82995..2c43d54766f3 100644
    --- a/drivers/gpu/drm/drm_mipi_dsi.c
    +++ b/drivers/gpu/drm/drm_mipi_dsi.c
    @@ -300,6 +300,7 @@ static int mipi_dsi_remove_device_fn(struct device *dev, void *priv)
    {
    struct mipi_dsi_device *dsi = to_mipi_dsi_device(dev);

    + mipi_dsi_detach(dsi);
    mipi_dsi_device_unregister(dsi);

    return 0;
    --
    2.35.1


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