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sfc: QT2025C: Add error message for suspected bad SFP+ cables 

Some cables have EEPROMs that conflict with the PHY's on-board EEPROM
so it cannot load firmware.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ben Hutchings 2009-12-23 13:48:42 +00:00 committed by David S. Miller
parent 1a1284ef97
commit 50d6ec552b
1 changed files with 7 additions and 1 deletions
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8
drivers/net/sfc/qt202x_phy.c
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@ -87,8 +87,14 @@ static int qt2025c_wait_heartbeat(struct efx_nic *efx)
old_counter = counter;
else if (counter != old_counter)
break;
if (time_after(jiffies, timeout))
if (time_after(jiffies, timeout)) {
/* Some cables have EEPROMs that conflict with the
* PHY's on-board EEPROM so it cannot load firmware */
EFX_ERR(efx, "If an SFP+ direct attach cable is"
" connected, please check that it complies"
" with the SFP+ specification\n");
return -ETIMEDOUT;
}
msleep(QT2025C_HEARTB_WAIT);
}