If there is a failure after pm_runtime_enable/get_sync()
we need to call pm_runtime_disable/put_sync().
Otherwise it will lead to an unbalanced pm_runtime_enable() on the
subsequent probe if the earlier probe bailed out due to -EPROBE_DEFER.
pm_runtime_get_sync() can fail as well so deal with that case too.
Signed-off-by: Roger Quadros <rogerq@xxxxxx>
---
v2:
- deal with pm_runtime_get_sync() failure
drivers/usb/dwc3/core.c | 25 +++++++++++++++++--------
1 file changed, 17 insertions(+), 8 deletions(-)
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 131e7eb..d51c9a9 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -959,14 +959,17 @@ static int dwc3_probe(struct platform_device *pdev)
pm_runtime_use_autosuspend(dev);
pm_runtime_set_autosuspend_delay(dev, DWC3_DEFAULT_AUTOSUSPEND_DELAY);
pm_runtime_enable(dev);
- pm_runtime_get_sync(dev);
+ ret = pm_runtime_get_sync(dev);
+ if (ret < 0)
+ goto err1;
+
pm_runtime_forbid(dev);
ret = dwc3_alloc_event_buffers(dwc, DWC3_EVENT_BUFFERS_SIZE);
if (ret) {
dev_err(dwc->dev, "failed to allocate event buffers\n");
ret = -ENOMEM;
- goto err0;
+ goto err2;
}
if (IS_ENABLED(CONFIG_USB_DWC3_HOST) &&
@@ -983,12 +986,12 @@ static int dwc3_probe(struct platform_device *pdev)
ret = dwc3_alloc_scratch_buffers(dwc);
if (ret)
- goto err1;
+ goto err3;
ret = dwc3_core_init(dwc);
if (ret) {
dev_err(dev, "failed to initialize core\n");
- goto err2;
+ goto err4;
}
/* Check the maximum_speed parameter */
@@ -1020,23 +1023,29 @@ static int dwc3_probe(struct platform_device *pdev)
ret = dwc3_core_init_mode(dwc);
if (ret)
- goto err3;
+ goto err5;
dwc3_debugfs_init(dwc);
pm_runtime_put(dev);
return 0;
-err3:
+err5:
dwc3_event_buffers_cleanup(dwc);
-err2:
+err4:
dwc3_free_scratch_buffers(dwc);
-err1:
+err3:
dwc3_free_event_buffers(dwc);
dwc3_ulpi_exit(dwc);
+err2:
+ pm_runtime_allow(&pdev->dev);
+err1:
+ pm_runtime_put_sync(&pdev->dev);
+ pm_runtime_disable(&pdev->dev);
+
err0:
/*
* restore res->start back to its original value so that, in case the
--
2.7.4
--
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