usb: chipidea: ci_hdrc_imx: add missing put_device() call in usbmisc_get_init_data()

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>

diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c
index 5e07a0a..ee565bd 100644 (file)
--- a/drivers/usb/chipidea/ci_hdrc_imx.c
+++ b/drivers/usb/chipidea/ci_hdrc_imx.c
@@ -139,9 +139,13 @@ static struct imx_usbmisc_data *usbmisc_get_init_data(struct device *dev)
        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;
 
        /*