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| author | Francois Romieu <romieu@fr.zoreil.com> | 2015-08-06 00:52:37 +0200 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2015-09-22 15:58:28 -0700 |
| commit | 307723255a05242ab252dd7047d4970ab60c7dfd (patch) | |
| tree | 43523e770a2c5ba010c5ec222e16db077e18de86 /drivers | |
| parent | 80043f3bf5bdb187566620a8f183c15b94e961cb (diff) | |
| download | linux-stable-307723255a05242ab252dd7047d4970ab60c7dfd.tar.gz linux-stable-307723255a05242ab252dd7047d4970ab60c7dfd.tar.bz2 linux-stable-307723255a05242ab252dd7047d4970ab60c7dfd.zip | |
e1000: remove dead e1000_init_eeprom_params calls
The device probe method e1000_probe calls e1000_init_eeprom_params
itself so there's no reason to call it again from e1000_do_write_eeprom
or e1000_do_read_eeprom.
The sentence above assumes that e1000_init_eeprom_params is effective.
e1000_init_eeprom_params depends mostly on hw->mac_type and e1000_probe
bails out early if it can't set mac_type (see e1000_init_hw_struct, then
e1000_set_mac_type), qed.
Btw, if effective, the removed paths would had been deadlock prone when
e1000_eeprom_spi was set:
-> e1000_write_eeprom (takes e1000_eeprom_lock)
-> e1000_do_write_eeprom
-> e1000_init_eeprom_params
-> e1000_read_eeprom (takes e1000_eeprom_lock)
(same narrative with e1000_read_eeprom -> e1000_do_read_eeprom etc.)
As a final note, the candidate deadlock above can't happen in e1000_probe
due to the way eeprom->word_size is set / tested.
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/intel/e1000/e1000_hw.c | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/drivers/net/ethernet/intel/e1000/e1000_hw.c b/drivers/net/ethernet/intel/e1000/e1000_hw.c index 45c8c864104e..b1af0d613caa 100644 --- a/drivers/net/ethernet/intel/e1000/e1000_hw.c +++ b/drivers/net/ethernet/intel/e1000/e1000_hw.c @@ -3900,10 +3900,6 @@ static s32 e1000_do_read_eeprom(struct e1000_hw *hw, u16 offset, u16 words, return E1000_SUCCESS; } - /* If eeprom is not yet detected, do so now */ - if (eeprom->word_size == 0) - e1000_init_eeprom_params(hw); - /* A check for invalid values: offset too large, too many words, and * not enough words. */ @@ -4074,10 +4070,6 @@ static s32 e1000_do_write_eeprom(struct e1000_hw *hw, u16 offset, u16 words, return E1000_SUCCESS; } - /* If eeprom is not yet detected, do so now */ - if (eeprom->word_size == 0) - e1000_init_eeprom_params(hw); - /* A check for invalid values: offset too large, too many words, and * not enough words. */ |