[PATCH] usb: dwc3: qcom: Fix memory leak in dwc3_qcom_interconnect_init

From: Miaoqian Lin
Date: Tue Dec 06 2022 - 03:19:47 EST


of_icc_get() alloc resources for path handle, we should release it when not
need anymore. Like the release in dwc3_qcom_interconnect_exit() function.
Add icc_put() in error handling to fix this.

Fixes: bea46b981515 ("usb: dwc3: qcom: Add interconnect support in dwc3 driver")
Signed-off-by: Miaoqian Lin <linmq006@xxxxxxxxx>
---
drivers/usb/dwc3/dwc3-qcom.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c
index 7c40f3ffc054..b0a0351d2d8b 100644
--- a/drivers/usb/dwc3/dwc3-qcom.c
+++ b/drivers/usb/dwc3/dwc3-qcom.c
@@ -261,7 +261,8 @@ static int dwc3_qcom_interconnect_init(struct dwc3_qcom *qcom)
if (IS_ERR(qcom->icc_path_apps)) {
dev_err(dev, "failed to get apps-usb path: %ld\n",
PTR_ERR(qcom->icc_path_apps));
- return PTR_ERR(qcom->icc_path_apps);
+ ret = PTR_ERR(qcom->icc_path_apps);
+ goto put_path_ddr;
}

max_speed = usb_get_maximum_speed(&qcom->dwc3->dev);
@@ -274,16 +275,22 @@ static int dwc3_qcom_interconnect_init(struct dwc3_qcom *qcom)
}
if (ret) {
dev_err(dev, "failed to set bandwidth for usb-ddr path: %d\n", ret);
- return ret;
+ goto put_path_apps;
}

ret = icc_set_bw(qcom->icc_path_apps, APPS_USB_AVG_BW, APPS_USB_PEAK_BW);
if (ret) {
dev_err(dev, "failed to set bandwidth for apps-usb path: %d\n", ret);
- return ret;
+ goto put_path_apps;
}

return 0;
+
+put_path_apps:
+ icc_put(qcom->icc_path_apps);
+put_path_ddr:
+ icc_put(qcom->icc_path_ddr);
+ return ret;
}

/**
--
2.25.1