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Date: Mon, 20 Jul 2020 17:37:18 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Frank Mori Hess <fmh6jj@...il.com>, Alan Stern <stern@...land.harvard.edu>, Doug Anderson <dianders@...omium.org>, Minas Harutyunyan <hminas@...opsys.com>, Felipe Balbi <balbi@...nel.org> Subject: [PATCH 5.4 156/215] usb: dwc2: Fix shutdown callback in platform From: Minas Harutyunyan <Minas.Harutyunyan@...opsys.com> commit 4fdf228cdf6925af45a2066d403821e0977bfddb upstream. To avoid lot of interrupts from dwc2 core, which can be asserted in specific conditions need to disable interrupts on HW level instead of disable IRQs on Kernel level, because of IRQ can be shared between drivers. Cc: stable@...r.kernel.org Fixes: a40a00318c7fc ("usb: dwc2: add shutdown callback to platform variant") Tested-by: Frank Mori Hess <fmh6jj@...il.com> Reviewed-by: Alan Stern <stern@...land.harvard.edu> Reviewed-by: Doug Anderson <dianders@...omium.org> Reviewed-by: Frank Mori Hess <fmh6jj@...il.com> Signed-off-by: Minas Harutyunyan <hminas@...opsys.com> Signed-off-by: Felipe Balbi <balbi@...nel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- drivers/usb/dwc2/platform.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/usb/dwc2/platform.c +++ b/drivers/usb/dwc2/platform.c @@ -337,7 +337,8 @@ static void dwc2_driver_shutdown(struct { struct dwc2_hsotg *hsotg = platform_get_drvdata(dev); - disable_irq(hsotg->irq); + dwc2_disable_global_interrupts(hsotg); + synchronize_irq(hsotg->irq); } /**
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