diff options
| -rw-r--r-- | chip/stm32/usb.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/chip/stm32/usb.c b/chip/stm32/usb.c index c97c68f03c..dfec42b5f8 100644 --- a/chip/stm32/usb.c +++ b/chip/stm32/usb.c @@ -456,8 +456,12 @@ void usb_wake(void) * 2 and 3 ms. */ esof_count = 3; + + /* STM32_USB_CNTR can also be updated from interrupt context. */ + interrupt_disable(); STM32_USB_CNTR |= STM32_USB_CNTR_RESUME | - STM32_USB_CNTR_ESOFM | STM32_USB_CNTR_SOFM; + STM32_USB_CNTR_ESOFM | STM32_USB_CNTR_SOFM; + interrupt_enable(); /* Try side-band wake as well. */ board_usb_wake(); |