usb: dwc3: pci: Fix pm_runtime_get_sync() error checking

If the device is already in a runtime PM enabled state
pm_runtime_get_sync() will return 1, so a test for negative
value should be used to check for errors.

Fixes: 8eed00b237a28 ("usb: dwc3: pci: Runtime resume child device from wq")
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Link: https://lore.kernel.org/r/20220422062652.10575-1-zhengyongjun3@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c
index 33f657d..491b5b0 100644 (file)
--- a/drivers/usb/dwc3/dwc3-pci.c
+++ b/drivers/usb/dwc3/dwc3-pci.c
@@ -286,7 +286,7 @@ static void dwc3_pci_resume_work(struct work_struct *work)
        int ret;
 
        ret = pm_runtime_get_sync(&dwc3->dev);
-       if (ret) {
+       if (ret < 0) {
                pm_runtime_put_sync_autosuspend(&dwc3->dev);
                return;
        }