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i40e: Handle admin Q timeout when releasing NVM

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There are some rare cases where the release resource call will return an
admin Q timeout. In these cases the code needs to try to release the
resource again until it succeeds or it times out.

Signed-off-by: Paul M Stillwell Jr <paul.m.stillwell.jr@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Paul M Stillwell Jr 2017-06-20 15:16:55 -07:00 committed by Jeff Kirsher
parent 4d5957cbde
commit 981e25c32b
1 changed files with 19 additions and 2 deletions
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21
drivers/net/ethernet/intel/i40e/i40e_nvm.c
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@ -134,8 +134,25 @@ i40e_i40e_acquire_nvm_exit:
**/
void i40e_release_nvm(struct i40e_hw *hw)
{
if (!hw->nvm.blank_nvm_mode)
i40e_aq_release_resource(hw, I40E_NVM_RESOURCE_ID, 0, NULL);
i40e_status ret_code = I40E_SUCCESS;
u32 total_delay = 0;
if (hw->nvm.blank_nvm_mode)
return;
ret_code = i40e_aq_release_resource(hw, I40E_NVM_RESOURCE_ID, 0, NULL);
/* there are some rare cases when trying to release the resource
* results in an admin Q timeout, so handle them correctly
*/
while ((ret_code == I40E_ERR_ADMIN_QUEUE_TIMEOUT) &&
(total_delay < hw->aq.asq_cmd_timeout)) {
usleep_range(1000, 2000);
ret_code = i40e_aq_release_resource(hw,
I40E_NVM_RESOURCE_ID,
0, NULL);
total_delay++;
}
}
/**