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usb: dwc3: st: Add of_dev_put() in probe function 

In function st_dwc3_probe, variable child_pdev takes the value returned
by of_find_device_by_node, which gets a device pointer but does not put
it. If child_pdev is not put before the probe function returns, it may
cause a reference leak. Hence put child_pdev after its last usage.
Issue found with Coccinelle.

Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
alistair/sunxi64-5.4-dsi
Nishka Dasgupta 2019-08-19 12:54:36 +05:30 committed by Felipe Balbi
parent e36721b901
commit bceb418b65
1 changed files with 1 additions and 0 deletions
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drivers/usb/dwc3/dwc3-st.c
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@ -274,6 +274,7 @@ static int st_dwc3_probe(struct platform_device *pdev)
dwc3_data->dr_mode = usb_get_dr_mode(&child_pdev->dev);
of_node_put(child);
of_dev_put(child_pdev);
/*
* Configure the USB port as device or host according to the static