Changeset 3489 in vbox for trunk/src/VBox/Devices/PC

Timestamp:

Jul 6, 2007 11:15:52 AM (17 years ago)

Author:

vboxsync

Message:

Clear interrupt action flag when a spurious interrupt situation is detected. (-> dangerous change)

File:

• trunk/src/VBox/Devices/PC/DevPIC.cpp (modified) (1 diff)

trunk/src/VBox/Devices/PC/DevPIC.cpp

@@ -282 +282 @@
             Log(("pic_update_irq: irq 2 is active, but no interrupt is pending on the slave pic!!\n"));
             /* Clear it here, so lower priority interrupts can still be dispatched. */
+
+            /* if this was the only pending irq, then we must clear the interrupt ff flag */
+            pData->CTXALLSUFF(pPicHlp)->pfnClearInterruptFF(pData->CTXSUFF(pDevIns));
+
             /** @note Is this correct? */
             pics[0].irr &= ~(1 << 2);
+
+            /* Call ourselves again just in case other interrupts are pending */
+            return pic_update_irq(pData);
         }
     }