From: Steve Glendinning Date: Wed, 4 Mar 2009 07:33:25 +0000 (+0000) Subject: smsc911x: improve EEPROM loading timeout logic in open X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=f7efb6ccc2113911e4e064f78bcd0343c4673038;p=deliverable%2Flinux.git smsc911x: improve EEPROM loading timeout logic in open This patch from Juha Leppanen suppresses a false warning if the eeprom load succeeds on the very last attempt. Juha> In function smsc911x_open smsc911x_reg_read+udelay can be run 50 Juha> times with timeout reaching -1, and the following if statetement Juha> does not catch the timeout and no warning is issued. Also if the Juha> 50th smsc911x_reg_read is GOOD, loop is exited with timeout as 0 Juha> and bogus warning issued. Replace testing order and --timeout Juha> instead of timeout-- and now max 50 smsc911x_reg_read's are done, Juha> with max 49 udelays. Signed-off-by: Steve Glendinning Signed-off-by: David S. Miller --- diff --git a/drivers/net/smsc911x.c b/drivers/net/smsc911x.c index 9a795105cc7c..ad15aab2137d 100644 --- a/drivers/net/smsc911x.c +++ b/drivers/net/smsc911x.c @@ -1162,8 +1162,8 @@ static int smsc911x_open(struct net_device *dev) /* Make sure EEPROM has finished loading before setting GPIO_CFG */ timeout = 50; - while ((timeout--) && - (smsc911x_reg_read(pdata, E2P_CMD) & E2P_CMD_EPC_BUSY_)) { + while ((smsc911x_reg_read(pdata, E2P_CMD) & E2P_CMD_EPC_BUSY_) && + --timeout) { udelay(10); }