[PATCH 4.19 47/77] usb: chipidea: ci_hdrc_imx: add missing put_device() call in usbmisc_get_init_data()

Greg Kroah-Hartman
2021-01-11T13:10:07Z

From: Yu Kuai <yukuai3@huawei.com>

commit 83a43ff80a566de8718dfc6565545a0080ec1fb5 upstream.

if of_find_device_by_node() succeed, usbmisc_get_init_data() doesn't have
a corresponding put_device(). Thus add put_device() to fix the exception
handling for this function implementation.

Fixes: ef12da914ed6 ("usb: chipidea: imx: properly check for usbmisc")
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20201117011430.642589-1-yukuai3@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/usb/chipidea/ci_hdrc_imx.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

--- a/drivers/usb/chipidea/ci_hdrc_imx.c
+++ b/drivers/usb/chipidea/ci_hdrc_imx.c
@@ -128,9 +128,13 @@ static struct imx_usbmisc_data *usbmisc_
misc_pdev = of_find_device_by_node(args.np);
of_node_put(args.np);

- if (!misc_pdev || !platform_get_drvdata(misc_pdev))
+ if (!misc_pdev)
return ERR_PTR(-EPROBE_DEFER);

+ if (!platform_get_drvdata(misc_pdev)) {
+ put_device(&misc_pdev->dev);
+ return ERR_PTR(-EPROBE_DEFER);
+ }
data->dev = &misc_pdev->dev;

if (of_find_property(np, "disable-over-current", NULL))