hw/mips_itu: fix off-by-one reported by Coverity

Fix off-by-one error in ITC Tag read.

Remove the switch as we just want to check if index is in valid range
rather than test against list of values.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>

diff --git a/hw/misc/mips_itu.c b/hw/misc/mips_itu.c
index 8461d2379b6cb9c5d9c91c6f79174d2934412396..da5455062db371338704fbcda495a15bcaac684b 100644 (file)
--- a/hw/misc/mips_itu.c
+++ b/hw/misc/mips_itu.c
@@ -66,18 +66,13 @@ static uint64_t itc_tag_read(void *opaque, hwaddr addr, unsigned size)
 {
     MIPSITUState *tag = (MIPSITUState *)opaque;
     uint64_t index = addr >> 3;
-    uint64_t ret = 0;
 
-    switch (index) {
-    case 0 ... ITC_ADDRESSMAP_NUM:
-        ret = tag->ITCAddressMap[index];
-        break;
-    default:
+    if (index >= ITC_ADDRESSMAP_NUM) {
         qemu_log_mask(LOG_GUEST_ERROR, "Read 0x%" PRIx64 "\n", addr);
-        break;
+        return 0;
     }
 
-    return ret;
+    return tag->ITCAddressMap[index];
 }
 
 static void itc_reconfigure(MIPSITUState *tag)