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e1000e: Fix error handling in e1000_set_d0_lplu_state_82571

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There is one e1e_wphy() call in e1000_set_d0_lplu_state_82571
that we have caught its return value but lack further handling.
Check and terminate the execution flow just like other e1e_wphy()
in this function.

Fixes: bc7f75fa97 ("[E1000E]: New pci-express e1000 driver (currently for ICH9 devices only)")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Acked-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Dvora Fuxbrumer <dvorax.fuxbrumer@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
This commit is contained in:
Dinghao Liu 2021-02-28 17:44:23 +08:00 committed by Tony Nguyen
parent 21f857f032
commit b52912b829
1 changed files with 2 additions and 0 deletions
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2
drivers/net/ethernet/intel/e1000e/82571.c
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@ -899,6 +899,8 @@ static s32 e1000_set_d0_lplu_state_82571(struct e1000_hw *hw, bool active)
} else {
data &= ~IGP02E1000_PM_D0_LPLU;
ret_val = e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, data);
if (ret_val)
return ret_val;
/* LPLU and SmartSpeed are mutually exclusive. LPLU is used
* during Dx states where the power conservation is most
* important. During driver activity we should enable