[v3,03/11] ps2: don't deassert irq twice if queue is empty

Commit Message

Volker Rümelin May 15, 2021, 11:32 a.m. UTC

Don't deassert the irq twice if the queue is empty. While the
second deassertion doesn't do any harm, it's unnecessary.

Reviewed-by: Philippe Mathieu-Daudé <[e-mail]>
Signed-off-by: Volker Rümelin <[e-mail]>
---
 hw/input/ps2.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

Patch

diff --git a/hw/input/ps2.c b/hw/input/ps2.c
index 55a81a0c51..4aee46a595 100644
--- a/hw/input/ps2.c
+++ b/hw/input/ps2.c
@@ -519,7 +519,9 @@  uint32_t ps2_read_data(PS2State *s)
         /* reading deasserts IRQ */
         s->update_irq(s->update_arg, 0);
         /* reassert IRQs if data left */
-        s->update_irq(s->update_arg, q->count != 0);
+        if (q->count) {
+            s->update_irq(s->update_arg, 1);
+        }
     }
     return val;
 }