smsc9420: fix another postfixed timeout

Roel Kluin recently fixed several instances where variables reach -1,
but 0 is tested afterwards.  This patch fixes another, so the timeout
will be correctly detected and a warning printed.

Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/net/smsc9420.c b/drivers/net/smsc9420.c
index a1e4b3895b33..83938e1953b0 100644
--- a/drivers/net/smsc9420.c
+++ b/drivers/net/smsc9420.c
@@ -341,7 +341,7 @@ static int smsc9420_eeprom_send_cmd(struct smsc9420_pdata *pd, u32 op)
         do {
                 msleep(1);
                 e2cmd = smsc9420_reg_read(pd, E2P_CMD);
-        } while ((e2cmd & E2P_CMD_EPC_BUSY_) && (timeout--));
+        } while ((e2cmd & E2P_CMD_EPC_BUSY_) && (--timeout));
 
         if (!timeout) {
                 smsc_info(HW, "TIMED OUT");