Fix gcc 3 warning: comparison is always true due to limited range of data type

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

diff --git a/hw/ide/internal.h b/hw/ide/internal.h
index 65991a8b07bf3e40631a594cd034f6252fe1f268..8766a3ae2c9806cd83471a3dd0c9a58ae1913a03 100644 (file)
--- a/hw/ide/internal.h
+++ b/hw/ide/internal.h
@@ -486,7 +486,7 @@ static inline IDEState *idebus_active_if(IDEBus *bus)
 
 static inline IDEState *bmdma_active_if(BMDMAState *bmdma)
 {
-    assert(bmdma->unit != -1);
+    assert(bmdma->unit != (uint8_t)-1);
     return bmdma->bus->ifs + bmdma->unit;
 }