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[PULL,27/39] cuda.c: return error for unknown commands

Message ID 1454044031-5930-29-git-send-email-david@gibson.dropbear.id.au
State New
Headers show

Commit Message

David Gibson Jan. 29, 2016, 5:06 a.m. UTC 
From: Alyssa Milburn <fuzzie@fuzzie.org>

This avoids MacsBug hanging at startup in the absence of ADB mouse
input, by replying with an error (which is also what MOL does) when
it sends an unknown command (0x1c).

Signed-off-by: Alyssa Milburn <fuzzie@fuzzie.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 hw/misc/macio/cuda.c | 5 +++++
 1 file changed, 5 insertions(+)
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Patch

diff --git a/hw/misc/macio/cuda.c b/hw/misc/macio/cuda.c
index 3556852..5e4d5d5 100644
--- a/hw/misc/macio/cuda.c
+++ b/hw/misc/macio/cuda.c
@@ -605,6 +605,11 @@  static void cuda_receive_packet(CUDAState *s,
         }
         break;
     default:
+        obuf[0] = ERROR_PACKET;
+        obuf[1] = 0x2;
+        obuf[2] = CUDA_PACKET;
+        obuf[3] = data[0];
+        cuda_send_packet_to_host(s, obuf, 4);
         break;
     }
 }