From: Cédric Le Goater <clg@kaod.org>

0xFFFFFFFF should be returned for non implemented registers.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Message-id: 20190124140519.13838-2-clg@kaod.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/ssi/aspeed_smc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/ssi/aspeed_smc.c b/hw/ssi/aspeed_smc.c
index 1270842dcf0..7af808c33c5 100644
--- a/hw/ssi/aspeed_smc.c
+++ b/hw/ssi/aspeed_smc.c
@@ -670,7 +670,7 @@ static uint64_t aspeed_smc_read(void *opaque, hwaddr addr, unsigned int size)
     } else {
         qemu_log_mask(LOG_UNIMP, "%s: not implemented: 0x%" HWADDR_PRIx "\n",
                       __func__, addr);
-        return 0;
+        return -1;
     }
 }
 
-- 
2.20.1