[PATCH 5.9 312/757] usb: dwc2: Add missing cleanups when usb_add_gadget_udc() fails

Greg Kroah-Hartman
2020-10-27T15:56:46Z

From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>

[ Upstream commit e1c08cf23172ed6fb228d75efc9f4c80a6812116 ]

Call dwc2_debugfs_exit() and dwc2_hcd_remove() (if the HCD was enabled
earlier) when usb_add_gadget_udc() has failed. This ensures that the
debugfs entries created by dwc2_debugfs_init() as well as the HCD are
cleaned up in the error path.

Fixes: 207324a321a866 ("usb: dwc2: Postponed gadget registration to the udc class driver")
Acked-by: Minas Harutyunyan <hminas@synopsys.com>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/usb/dwc2/platform.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c
index db9fd4bd1a38c..b28e90e0b685d 100644
--- a/drivers/usb/dwc2/platform.c
+++ b/drivers/usb/dwc2/platform.c
@@ -584,12 +584,16 @@ static int dwc2_driver_probe(struct platform_device *dev)
if (retval) {
hsotg->gadget.udc = NULL;
dwc2_hsotg_remove(hsotg);
- goto error_init;
+ goto error_debugfs;
}
}
#endif /* CONFIG_USB_DWC2_PERIPHERAL || CONFIG_USB_DWC2_DUAL_ROLE */
return 0;

+error_debugfs:
+ dwc2_debugfs_exit(hsotg);
+ if (hsotg->hcd_enabled)
+ dwc2_hcd_remove(hsotg);
error_init:
if (hsotg->params.activate_stm_id_vb_detection)
regulator_disable(hsotg->usb33d);
--
2.25.1