ftgmac100: fix dblac write test

The test of the write of the dblac register was testing the old value
instead of the new value. This would accept the write of an invalid value
but subsequently refuse any following valid writes.

Signed-off-by: erik-smit <[email protected]>
Reviewed-by: Cédric Le Goater <[email protected]>
Signed-off-by: Jason Wang <[email protected]>

Author: erik-smit

hw/net/ftgmac100.c

@@ -810,16 +810,18 @@ static void ftgmac100_write(void *opaque, hwaddr addr,
         s->phydata = value & 0xffff;
         break;
     case FTGMAC100_DBLAC: /* DMA Burst Length and Arbitration Control */
-        if (FTGMAC100_DBLAC_TXDES_SIZE(s->dblac) < sizeof(FTGMAC100Desc)) {
+        if (FTGMAC100_DBLAC_TXDES_SIZE(value) < sizeof(FTGMAC100Desc)) {
             qemu_log_mask(LOG_GUEST_ERROR,
-                          "%s: transmit descriptor too small : %d bytes\n",
-                          __func__, FTGMAC100_DBLAC_TXDES_SIZE(s->dblac));
+                          "%s: transmit descriptor too small: %" PRIx64
+                          " bytes\n", __func__,
+                          FTGMAC100_DBLAC_TXDES_SIZE(value));
             break;
         }
-        if (FTGMAC100_DBLAC_RXDES_SIZE(s->dblac) < sizeof(FTGMAC100Desc)) {
+        if (FTGMAC100_DBLAC_RXDES_SIZE(value) < sizeof(FTGMAC100Desc)) {
             qemu_log_mask(LOG_GUEST_ERROR,
-                          "%s: receive descriptor too small : %d bytes\n",
-                          __func__, FTGMAC100_DBLAC_RXDES_SIZE(s->dblac));
+                          "%s: receive descriptor too small : %" PRIx64
+                          " bytes\n", __func__,
+                          FTGMAC100_DBLAC_RXDES_SIZE(value));
             break;
         }
         s->dblac = value;