i8259: Do not update IRQ output after spurious pic_poll_read

If pic_poll_read finds no pending IRQ and return a spurious one instead,
no PIC state is changed, thus we do not need to call pic_update_irq.

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

1 files changed, 0 insertions, 1 deletions

diff --git a/hw/i8259.c b/hw/i8259.c
index 65123bd..cddd3c7 100644
--- a/hw/i8259.c
+++ b/hw/i8259.c
@@ -393,7 +393,6 @@ static uint32_t pic_poll_read(PicState *s)
             pic_update_irq(s->pics_state);
     } else {
         ret = 0x07;
-        pic_update_irq(s->pics_state);
     }
 
     return ret;