From: Fabrice Gasnier <fabrice.gasn...@st.com> [ Upstream commit 5aa678c7fd5371769efde30763fb43a43a118cd0 ]
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") Tested-by: Artur Petrosyan <art...@synopsys.com> Acked-by: Minas Harutyunyan <hmi...@synopsys.com> Signed-off-by: Fabrice Gasnier <fabrice.gasn...@st.com> Signed-off-by: Amelie Delaunay <amelie.delau...@st.com> Signed-off-by: Felipe Balbi <felipe.ba...@linux.intel.com> Signed-off-by: Sasha Levin <sas...@kernel.org> --- 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 2bd6e6bfc241..befaf1e9d98a 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -4482,7 +4482,9 @@ 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 */ -- 2.17.1