With a postfix decrement the timeout will reach -1 rather than 0,
so the warning will not be issued.

Signed-off-by: Roel Kluin <redacted>
---

diff --git a/drivers/net/smsc911x.c b/drivers/net/smsc911x.c
index f513bdf..783c1a7 100644
--- a/drivers/net/smsc911x.c
+++ b/drivers/net/smsc911x.c

@@ -953,7 +953,7 @@ smsc911x_rx_fastforward(struct smsc911x_data 

*pdata, unsigned int pktbytes)
       do {
          udelay(1);
          val = smsc911x_reg_read(pdata, RX_DP_CTRL);
-      } while (timeout-- && (val & RX_DP_CTRL_RX_FFWD_));
+      } while (--timeout && (val & RX_DP_CTRL_RX_FFWD_));

       if (unlikely(timeout == 0))
          SMSC_WARNING(HW, "Timed out waiting for "