2.6.32-longterm review patch. If anyone has any objections, please let us know.
------------------ From: Bruce Allan <[email protected]> commit 627c8a041f7aaaea93c766f69bd61d952a277586 upstream. Reset the PHY before first accessing it. Doing so, ensure that the PHY is in a known good state before we read/write PHY registers. This fixes a driver probe failure. Signed-off-by: Bruce Allan <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]> Signed-off-by: David S. Miller <[email protected]> [Backported to 2.6.32 by dann frazier <[email protected]>] Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/net/e1000e/ich8lan.c | 11 +++++++++++ 1 file changed, 11 insertions(+) --- a/drivers/net/e1000e/ich8lan.c +++ b/drivers/net/e1000e/ich8lan.c @@ -274,6 +274,16 @@ static s32 e1000_init_phy_params_pchlan( phy->ops.write_phy_reg_locked = e1000_write_phy_reg_hv_locked; phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT; + /* + * Reset the PHY before any acccess to it. Doing so, ensures that + * the PHY is in a known good state before we read/write PHY registers. + * The generic reset is sufficient here, because we haven't determined + * the PHY type yet. + */ + ret_val = e1000e_phy_hw_reset_generic(hw); + if (ret_val) + goto out; + phy->id = e1000_phy_unknown; e1000e_get_phy_id(hw); phy->type = e1000e_get_phy_type_from_id(phy->id); @@ -287,6 +297,7 @@ static s32 e1000_init_phy_params_pchlan( phy->ops.commit_phy = e1000e_phy_sw_reset; } + out: return ret_val; } _______________________________________________ stable mailing list [email protected] http://linux.kernel.org/mailman/listinfo/stable
