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authorSrinivas Kandagatla <srinivas.kandagatla@linaro.org>2018-09-17 02:45:44 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-09-25 21:21:02 +0300
commit94fe5f2b45c4108885e4b71f6b181068632ec904 (patch)
treeef8a7048c0afb29b2d3d547a3f1fd54e69f42f49 /drivers/slimbus
parent9652e6aa62a1836494ebb8dbd402587c083b568c (diff)
downloadlinux-94fe5f2b45c4108885e4b71f6b181068632ec904.tar.xz
silmbus: ngd: register controller after power up.
Register slimbus controller only after finishing powerup sequnce so that we do not endup in situation where core starts sending transactions before the controller is ready. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/slimbus')
-rw-r--r--drivers/slimbus/qcom-ngd-ctrl.c20
1 files changed, 11 insertions, 9 deletions
diff --git a/drivers/slimbus/qcom-ngd-ctrl.c b/drivers/slimbus/qcom-ngd-ctrl.c
index ef5eb9e750c2..986e8de4146a 100644
--- a/drivers/slimbus/qcom-ngd-ctrl.c
+++ b/drivers/slimbus/qcom-ngd-ctrl.c
@@ -1234,8 +1234,17 @@ static int qcom_slim_ngd_enable(struct qcom_slim_ngd_ctrl *ctrl, bool enable)
pm_runtime_resume(ctrl->dev);
pm_runtime_mark_last_busy(ctrl->dev);
pm_runtime_put(ctrl->dev);
+
+ ret = slim_register_controller(&ctrl->ctrl);
+ if (ret) {
+ dev_err(ctrl->dev, "error adding slim controller\n");
+ return ret;
+ }
+
+ dev_info(ctrl->dev, "SLIM controller Registered\n");
} else {
qcom_slim_qmi_exit(ctrl);
+ slim_unregister_controller(&ctrl->ctrl);
}
return 0;
@@ -1356,11 +1365,6 @@ static int qcom_slim_ngd_probe(struct platform_device *pdev)
int ret;
ctrl->ctrl.dev = dev;
- ret = slim_register_controller(&ctrl->ctrl);
- if (ret) {
- dev_err(dev, "error adding slim controller\n");
- return ret;
- }
pm_runtime_use_autosuspend(dev);
pm_runtime_set_autosuspend_delay(dev, QCOM_SLIM_NGD_AUTOSUSPEND);
@@ -1370,7 +1374,7 @@ static int qcom_slim_ngd_probe(struct platform_device *pdev)
ret = qcom_slim_ngd_qmi_svc_event_init(ctrl);
if (ret) {
dev_err(&pdev->dev, "QMI service registration failed:%d", ret);
- goto err;
+ return ret;
}
INIT_WORK(&ctrl->m_work, qcom_slim_ngd_master_worker);
@@ -1382,8 +1386,6 @@ static int qcom_slim_ngd_probe(struct platform_device *pdev)
}
return 0;
-err:
- slim_unregister_controller(&ctrl->ctrl);
wq_err:
qcom_slim_ngd_qmi_svc_event_deinit(&ctrl->qmi);
if (ctrl->mwq)
@@ -1456,7 +1458,7 @@ static int qcom_slim_ngd_remove(struct platform_device *pdev)
struct qcom_slim_ngd_ctrl *ctrl = platform_get_drvdata(pdev);
pm_runtime_disable(&pdev->dev);
- slim_unregister_controller(&ctrl->ctrl);
+ qcom_slim_ngd_enable(ctrl, false);
qcom_slim_ngd_exit_dma(ctrl);
qcom_slim_ngd_qmi_svc_event_deinit(&ctrl->qmi);
if (ctrl->mwq)