i8259: Update IRQ state after reset

MIPS and PPC users of the i8259 output signal expect us to report state
updates also after reset. As no consumer (including the master PIC) can
misinterpret the deassert as an activation event, it is safe to simply
update the IRQ state after reset.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

diff --git a/hw/i8259.c b/hw/i8259.c
index b7a011f..3498c6b 100644 (file)
--- a/hw/i8259.c
+++ b/hw/i8259.c
@@ -283,6 +283,7 @@ static void pic_reset(void *opaque)
     s->init4 = 0;
     s->single_mode = 0;
     /* Note: ELCR is not reset */
+    pic_update_irq(s->pics_state);
 }
 
 static void pic_ioport_write(void *opaque, target_phys_addr_t addr64,
@@ -298,8 +299,6 @@ static void pic_ioport_write(void *opaque, target_phys_addr_t addr64,
         if (val & 0x10) {
             /* init */
             pic_reset(s);
-            /* deassert a pending interrupt */
-            qemu_irq_lower(s->pics_state->pics[0].int_out);
             s->init_state = 1;
             s->init4 = val & 1;
             s->single_mode = val & 2;