4.1-stable review patch. If anyone has any objections, please let me know.
------------------ From: Stas Sergeev <[email protected]> [ Upstream commit 538761b794c1542f1c6e31eadd9d7aae118889f7 ] The commit 898b2970e2c9 ("mvneta: implement SGMII-based in-band link state signaling") changed mvneta_adjust_link() so that it does not clear the auto-negotiation bits in MVNETA_GMAC_AUTONEG_CONFIG register. This was necessary for auto-negotiation mode to work. Unfortunately I haven't checked if these bits are ever initialized. It appears they are not. This patch adds the missing initialization of the auto-negotiation bits in the MVNETA_GMAC_AUTONEG_CONFIG register. It fixes the following regression: https://www.mail-archive.com/[email protected]/msg67928.html Since the patch was tested to fix a regression, it should be applied to stable tree. Tested-by: Arnaud Ebalard <[email protected]> CC: Thomas Petazzoni <[email protected]> CC: Florian Fainelli <[email protected]> CC: [email protected] CC: [email protected] CC: [email protected] Signed-off-by: Stas Sergeev <[email protected]> Signed-off-by: David S. Miller <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/net/ethernet/marvell/mvneta.c | 6 ++++++ 1 file changed, 6 insertions(+) --- a/drivers/net/ethernet/marvell/mvneta.c +++ b/drivers/net/ethernet/marvell/mvneta.c @@ -1013,6 +1013,12 @@ static void mvneta_defaults_set(struct m val = mvreg_read(pp, MVNETA_GMAC_CLOCK_DIVIDER); val |= MVNETA_GMAC_1MS_CLOCK_ENABLE; mvreg_write(pp, MVNETA_GMAC_CLOCK_DIVIDER, val); + } else { + val = mvreg_read(pp, MVNETA_GMAC_AUTONEG_CONFIG); + val &= ~(MVNETA_GMAC_INBAND_AN_ENABLE | + MVNETA_GMAC_AN_SPEED_EN | + MVNETA_GMAC_AN_DUPLEX_EN); + mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val); } mvneta_set_ucast_table(pp, -1); -- 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/
