From: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Date: Fri, 9 Feb 2018 18:51:33 +0000 (+0000)
Subject: cuda: don't call cuda_update() when writing to ACR register
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=eb0788cb73a3eda37a97be74d186164b0c0b58d7;p=qemu.git

cuda: don't call cuda_update() when writing to ACR register

The wire protocol for reading data to/from the VIA is triggered by changing
inputs on port B rather than changing the timer configuration via the ACR.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---

diff --git a/hw/misc/macio/cuda.c b/hw/misc/macio/cuda.c
index 729905236c..355a2f2262 100644
--- a/hw/misc/macio/cuda.c
+++ b/hw/misc/macio/cuda.c
@@ -407,7 +407,6 @@ static void cuda_write(void *opaque, hwaddr addr, uint64_t val, unsigned size)
     case CUDA_REG_ACR:
         s->acr = val;
         cuda_timer_update(s, &s->timers[0], qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL));
-        cuda_update(s);
         break;
     case CUDA_REG_PCR:
         s->pcr = val;