[PATCH 6.8 094/158] usb: misc: onboard_usb_hub: Disable the USB hub clock on failure

Greg Kroah-Hartman
2024-04-23T21:41:50Z

From: Fabio Estevam <festevam@denx.de>

commit 34b990e9bb54d20b9675ca9483be8668eed374d8 upstream.

In case regulator_bulk_enable() fails, the previously enabled USB hub
clock should be disabled.

Fix it accordingly.

Fixes: 65e62b8a955a ("usb: misc: onboard_usb_hub: Add support for clock input")
Cc: stable <stable@kernel.org>
Signed-off-by: Fabio Estevam <festevam@denx.de>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Acked-by: Matthias Kaehlcke <mka@chromium.org>
Link: https://lore.kernel.org/r/20240409162910.2061640-1-festevam@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/misc/onboard_usb_hub.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/misc/onboard_usb_hub.c b/drivers/usb/misc/onboard_usb_hub.c
index c6101ed2d9d4..d8049275a023 100644
--- a/drivers/usb/misc/onboard_usb_hub.c
+++ b/drivers/usb/misc/onboard_usb_hub.c
@@ -78,7 +78,7 @@ static int onboard_hub_power_on(struct onboard_hub *hub)
err = regulator_bulk_enable(hub->pdata->num_supplies, hub->supplies);
if (err) {
dev_err(hub->dev, "failed to enable supplies: %pe\n", ERR_PTR(err));
- return err;
+ goto disable_clk;
}

fsleep(hub->pdata->reset_us);
@@ -87,6 +87,10 @@ static int onboard_hub_power_on(struct onboard_hub *hub)
hub->is_powered_on = true;

return 0;
+
+disable_clk:
+ clk_disable_unprepare(hub->clk);
+ return err;
}

static int onboard_hub_power_off(struct onboard_hub *hub)
--
2.44.0