From: Greg KH <[email protected]> 3.0-stable review patch. If anyone has any objections, please let me know.
------------------ From: Tushar Dave <[email protected]> commit b7ec70be01a87f2c85df3ae11046e74f9b67e323 upstream. Found that commit d478eb44 was a bad commit. If the link partner is transmitting codeword (even if NULL codeword), then the RXCW.C bit will be set so check for RXCW.CW is unnecessary. Ref: RH BZ 840642 Reported-by: Fabio Futigami <[email protected]> Signed-off-by: Tushar Dave <[email protected]> CC: Marcelo Ricardo Leitner <[email protected]> Tested-by: Aaron Brown <[email protected]> Signed-off-by: Peter P Waskiewicz Jr <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/net/e1000e/82571.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) --- a/drivers/net/e1000e/82571.c +++ b/drivers/net/e1000e/82571.c @@ -1602,10 +1602,8 @@ static s32 e1000_check_for_serdes_link_8 * auto-negotiation in the TXCW register and disable * forced link in the Device Control register in an * attempt to auto-negotiate with our link partner. - * If the partner code word is null, stop forcing - * and restart auto negotiation. */ - if ((rxcw & E1000_RXCW_C) || !(rxcw & E1000_RXCW_CW)) { + if (rxcw & E1000_RXCW_C) { /* Enable autoneg, and unforce link up */ ew32(TXCW, mac->txcw); ew32(CTRL, (ctrl & ~E1000_CTRL_SLU)); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
