From: Fabrice Gasnier <fabrice.gasnier@xxxxxx>
dwc2_vbus_supply_exit() may call regulator_disable(). It shouldn't be
called with interrupts disabled as it might sleep.
This is seen with DEBUG_ATOMIC_SLEEP=y.
Fixes: 531ef5ebea96 ("usb: dwc2: add support for host mode external
vbus supply")
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@xxxxxx>
Signed-off-by: Amelie Delaunay <amelie.delaunay@xxxxxx>
---
drivers/usb/dwc2/hcd.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c
index bb72517..e8a480e 100644
--- a/drivers/usb/dwc2/hcd.c
+++ b/drivers/usb/dwc2/hcd.c
@@ -4484,7 +4484,9 @@ static int _dwc2_hcd_suspend(struct usb_hcd *hcd)
hprt0 |= HPRT0_SUSP;
hprt0 &= ~HPRT0_PWR;
dwc2_writel(hsotg, hprt0, HPRT0);
+ spin_unlock_irqrestore(&hsotg->lock, flags);
dwc2_vbus_supply_exit(hsotg);
+ spin_lock_irqsave(&hsotg->lock, flags);
}
/* Enter partial_power_down */
--
2.7.4
