diff options
| author | Jacob Keller <jacob.e.keller@intel.com> | 2017-10-27 11:06:55 -0400 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2017-11-21 23:25:17 -0800 |
| commit | 3d72aebfc61b025a2478c9d2bbc3c8c4036a1c05 (patch) | |
| tree | 488dcd5abb85384f2397dac9e4cd0cb9cd164ab3 /drivers/net/ethernet/intel/i40e/i40e_nvm.c | |
| parent | 0c86a6bd85ff0629cd2c5141027fc1c8bb6cde9c (diff) | |
i40e: Fix for NUP NVM image downgrade failure
Since commit 96a39aed25e6 ("i40e: Acquire NVM lock before
reads on all devices") we've used the NVM lock
to synchronize NVM reads even on devices which don't strictly
need the lock.
Doing so can cause a regression on older firmware prior to 1.5,
especially when downgrading the firmware.
Fix this by only grabbing the lock if we're running on an X722
device (which requires the lock as it uses the AdminQ to read
the NVM), or if we're currently running 1.5 or newer firmware.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/i40e/i40e_nvm.c')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_nvm.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_nvm.c b/drivers/net/ethernet/intel/i40e/i40e_nvm.c index 0ccab0a5d717..7689c2ee0d46 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_nvm.c +++ b/drivers/net/ethernet/intel/i40e/i40e_nvm.c @@ -328,15 +328,17 @@ static i40e_status __i40e_read_nvm_word(struct i40e_hw *hw, i40e_status i40e_read_nvm_word(struct i40e_hw *hw, u16 offset, u16 *data) { - i40e_status ret_code; + i40e_status ret_code = 0; - ret_code = i40e_acquire_nvm(hw, I40E_RESOURCE_READ); + if (hw->flags & I40E_HW_FLAG_NVM_READ_REQUIRES_LOCK) + ret_code = i40e_acquire_nvm(hw, I40E_RESOURCE_READ); if (ret_code) return ret_code; ret_code = __i40e_read_nvm_word(hw, offset, data); - i40e_release_nvm(hw); + if (hw->flags & I40E_HW_FLAG_NVM_READ_REQUIRES_LOCK) + i40e_release_nvm(hw); return ret_code; } |