drm/bridge: nwl-dsi: Fix PM disable depth imbalance in nwl_dsi_probe

[ Upstream commit b146e343a9e05605b491b1bf4a2b62a39d5638d8 ]

The pm_runtime_enable will increase power disable depth.
Thus a pairing decrement is needed on the error handling
path to keep it balanced according to context.

Fixes: 44cfc6233447 ("drm/bridge: Add NWL MIPI DSI host controller support")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220105104826.1418-1-linmq006@gmail.com
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpu/drm/bridge/nwl-dsi.c b/drivers/gpu/drm/bridge/nwl-dsi.c
index 6cac2e58cd15fb15e51b7026aca23ac9200c8421..b68d335981588e42d884959a2e5fc4c1d0b1af10 100644 (file)
--- a/drivers/gpu/drm/bridge/nwl-dsi.c
+++ b/drivers/gpu/drm/bridge/nwl-dsi.c
@@ -1188,6 +1188,7 @@ static int nwl_dsi_probe(struct platform_device *pdev)
 
        ret = nwl_dsi_select_input(dsi);
        if (ret < 0) {
+               pm_runtime_disable(dev);
                mipi_dsi_host_unregister(&dsi->dsi_host);
                return ret;
        }