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stm32: Fix usbotg irq wakeup notification

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The DAINTMSK prevents irqs but does not prevent the status reporting
in the GINTSTS and DAINT fields.  Thus, the mask bits should be
checked prior to sending a wakeup notification.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor
2023-04-14 23:59:34 -04:00
parent 10e816979e
commit 8b2074e068
1 changed files with 4 additions and 4 deletions
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8
src/stm32/usbotg.c
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@@ -397,11 +397,11 @@ OTG_FS_IRQHandler(void)
}
if (sts & USB_OTG_GINTSTS_IEPINT) {
// Can transmit data - disable irq and notify endpoint
uint32_t daint = OTGD->DAINT;
OTGD->DAINTMSK &= ~daint;
if (daint & (1 << 0))
uint32_t daint = OTGD->DAINT, msk = OTGD->DAINTMSK, pend = daint & msk;
OTGD->DAINTMSK = msk & ~daint;
if (pend & (1 << 0))
usb_notify_ep0();
if (daint & (1 << USB_CDC_EP_BULK_IN))
if (pend & (1 << USB_CDC_EP_BULK_IN))
usb_notify_bulk_in();
}
}