Adding code where missing to handle case where calls to e1000_read_kmrn_reg_80003es2lan and e1000_write_kmrn_reg_80003es2lan return an error value. Also, when accessing the E1000_KMRNCTRLSTA_INBAND_PARAM offset to disable far-end loopback on 80003es2lan devices, make the handling of a read or write failure consistent between hw_init and hw_reset.
Signed-off-by: Wenzhuo Lu <wenzhuo.lu at intel.com> --- drivers/net/e1000/base/e1000_80003es2lan.c | 31 ++++++++++++++++++++---------- 1 file changed, 21 insertions(+), 10 deletions(-) diff --git a/drivers/net/e1000/base/e1000_80003es2lan.c b/drivers/net/e1000/base/e1000_80003es2lan.c index b79496b..5ac925e 100644 --- a/drivers/net/e1000/base/e1000_80003es2lan.c +++ b/drivers/net/e1000/base/e1000_80003es2lan.c @@ -852,11 +852,15 @@ STATIC s32 e1000_reset_hw_80003es2lan(struct e1000_hw *hw) /* Disable IBIST slave mode (far-end loopback) */ ret_val = e1000_read_kmrn_reg_80003es2lan(hw, E1000_KMRNCTRLSTA_INBAND_PARAM, &kum_reg_data); - if (ret_val) - return ret_val; - kum_reg_data |= E1000_KMRNCTRLSTA_IBIST_DISABLE; - e1000_write_kmrn_reg_80003es2lan(hw, E1000_KMRNCTRLSTA_INBAND_PARAM, - kum_reg_data); + if (!ret_val) { + kum_reg_data |= E1000_KMRNCTRLSTA_IBIST_DISABLE; + ret_val = e1000_write_kmrn_reg_80003es2lan(hw, + E1000_KMRNCTRLSTA_INBAND_PARAM, + kum_reg_data); + if (ret_val) + DEBUGOUT("Error disabling far-end loopback\n"); + } else + DEBUGOUT("Error disabling far-end loopback\n"); ret_val = e1000_get_auto_rd_done_generic(hw); if (ret_val) @@ -912,11 +916,18 @@ STATIC s32 e1000_init_hw_80003es2lan(struct e1000_hw *hw) return ret_val; /* Disable IBIST slave mode (far-end loopback) */ - e1000_read_kmrn_reg_80003es2lan(hw, E1000_KMRNCTRLSTA_INBAND_PARAM, - &kum_reg_data); - kum_reg_data |= E1000_KMRNCTRLSTA_IBIST_DISABLE; - e1000_write_kmrn_reg_80003es2lan(hw, E1000_KMRNCTRLSTA_INBAND_PARAM, - kum_reg_data); + ret_val = + e1000_read_kmrn_reg_80003es2lan(hw, E1000_KMRNCTRLSTA_INBAND_PARAM, + &kum_reg_data); + if (!ret_val) { + kum_reg_data |= E1000_KMRNCTRLSTA_IBIST_DISABLE; + ret_val = e1000_write_kmrn_reg_80003es2lan(hw, + E1000_KMRNCTRLSTA_INBAND_PARAM, + kum_reg_data); + if (ret_val) + DEBUGOUT("Error disabling far-end loopback\n"); + } else + DEBUGOUT("Error disabling far-end loopback\n"); /* Set the transmit descriptor write-back policy */ reg_data = E1000_READ_REG(hw, E1000_TXDCTL(0)); -- 1.9.3