From: Bruce Allan Date: Sat, 5 Jan 2013 05:08:31 +0000 (+0000) Subject: e1000e: do not ignore variables which get set a value X-Git-Tag: v3.9-rc1~139^2~257^2~1 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7dbbe5d5a5073d590790007d5b98d7fd51fd2ff5;p=platform%2Fupstream%2Fkernel-adaptation-pc.git e1000e: do not ignore variables which get set a value Static analysis with cppcheck has shown a few instances of a variable which is assigned a value that is never used. A number of these are the return status of various driver function calls which should be passed back to the caller of the current function. Signed-off-by: Bruce Allan Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- diff --git a/drivers/net/ethernet/intel/e1000e/80003es2lan.c b/drivers/net/ethernet/intel/e1000e/80003es2lan.c index a2b5b44..aa5e4cf 100644 --- a/drivers/net/ethernet/intel/e1000e/80003es2lan.c +++ b/drivers/net/ethernet/intel/e1000e/80003es2lan.c @@ -773,6 +773,9 @@ static s32 e1000_reset_hw_80003es2lan(struct e1000_hw *hw) ctrl = er32(CTRL); ret_val = e1000_acquire_phy_80003es2lan(hw); + if (ret_val) + return ret_val; + e_dbg("Issuing a global reset to MAC\n"); ew32(CTRL, ctrl | E1000_CTRL_RST); e1000_release_phy_80003es2lan(hw); @@ -832,6 +835,8 @@ static s32 e1000_init_hw_80003es2lan(struct e1000_hw *hw) /* Setup link and flow control */ ret_val = mac->ops.setup_link(hw); + if (ret_val) + return ret_val; /* Disable IBIST slave mode (far-end loopback) */ e1000_read_kmrn_reg_80003es2lan(hw, E1000_KMRNCTRLSTA_INBAND_PARAM, diff --git a/drivers/net/ethernet/intel/e1000e/82571.c b/drivers/net/ethernet/intel/e1000e/82571.c index c2c23d2..d48143f 100644 --- a/drivers/net/ethernet/intel/e1000e/82571.c +++ b/drivers/net/ethernet/intel/e1000e/82571.c @@ -554,16 +554,14 @@ static s32 e1000_get_hw_semaphore_82573(struct e1000_hw *hw) s32 i = 0; extcnf_ctrl = er32(EXTCNF_CTRL); - extcnf_ctrl |= E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP; do { + extcnf_ctrl |= E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP; ew32(EXTCNF_CTRL, extcnf_ctrl); extcnf_ctrl = er32(EXTCNF_CTRL); if (extcnf_ctrl & E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP) break; - extcnf_ctrl |= E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP; - usleep_range(2000, 4000); i++; } while (i < MDIO_OWNERSHIP_TIMEOUT); @@ -935,6 +933,8 @@ static s32 e1000_set_d0_lplu_state_82571(struct e1000_hw *hw, bool active) /* When LPLU is enabled, we should disable SmartSpeed */ ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG, &data); + if (ret_val) + return ret_val; data &= ~IGP01E1000_PSCFR_SMART_SPEED; ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG, data); if (ret_val) @@ -1797,6 +1797,8 @@ static s32 e1000_fix_nvm_checksum_82571(struct e1000_hw *hw) if (ret_val) return ret_val; ret_val = e1000e_update_nvm_checksum(hw); + if (ret_val) + return ret_val; } } diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.c b/drivers/net/ethernet/intel/e1000e/ich8lan.c index 3795ac6..13f8fa0 100644 --- a/drivers/net/ethernet/intel/e1000e/ich8lan.c +++ b/drivers/net/ethernet/intel/e1000e/ich8lan.c @@ -2342,6 +2342,8 @@ static s32 e1000_set_d0_lplu_state_ich8lan(struct e1000_hw *hw, bool active) /* When LPLU is enabled, we should disable SmartSpeed */ ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG, &data); + if (ret_val) + return ret_val; data &= ~IGP01E1000_PSCFR_SMART_SPEED; ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG, data); if (ret_val) @@ -4053,8 +4055,7 @@ void e1000e_gig_downshift_workaround_ich8lan(struct e1000_hw *hw) if (ret_val) return; reg_data &= ~E1000_KMRNCTRLSTA_DIAG_NELPBK; - ret_val = e1000e_write_kmrn_reg(hw, E1000_KMRNCTRLSTA_DIAG_OFFSET, - reg_data); + e1000e_write_kmrn_reg(hw, E1000_KMRNCTRLSTA_DIAG_OFFSET, reg_data); } /** diff --git a/drivers/net/ethernet/intel/e1000e/phy.c b/drivers/net/ethernet/intel/e1000e/phy.c index 3b97121..b4aaf69 100644 --- a/drivers/net/ethernet/intel/e1000e/phy.c +++ b/drivers/net/ethernet/intel/e1000e/phy.c @@ -3332,7 +3332,7 @@ s32 e1000_get_cable_length_82577(struct e1000_hw *hw) I82577_DSTATUS_CABLE_LENGTH_SHIFT; if (length == E1000_CABLE_LENGTH_UNDEFINED) - ret_val = -E1000_ERR_PHY; + return -E1000_ERR_PHY; phy->cable_length = length;