net/i40e/base: sync nvmupdate command and adminq subtask

[dpdk.git] / drivers / net / i40e / base / i40e_nvm.c

diff --git a/drivers/net/i40e/base/i40e_nvm.c b/drivers/net/i40e/base/i40e_nvm.c
index e896502..90521fa 100644 (file)
--- a/drivers/net/i40e/base/i40e_nvm.c
+++ b/drivers/net/i40e/base/i40e_nvm.c
@@ -899,6 +899,11 @@ enum i40e_status_code i40e_nvmupd_command(struct i40e_hw *hw,
                hw->nvmupd_state = I40E_NVMUPD_STATE_INIT;
        }
 
+       /* Acquire lock to prevent race condition where adminq_task
+        * can execute after i40e_nvmupd_nvm_read/write but before state
+        * variables (nvm_wait_opcode, nvm_release_on_done) are updated
+        */
+       i40e_acquire_spinlock(&hw->aq.arq_spinlock);
        switch (hw->nvmupd_state) {
        case I40E_NVMUPD_STATE_INIT:
                status = i40e_nvmupd_state_init(hw, cmd, bytes, perrno);
@@ -934,6 +939,7 @@ enum i40e_status_code i40e_nvmupd_command(struct i40e_hw *hw,
                *perrno = -ESRCH;
                break;
        }
+       i40e_release_spinlock(&hw->aq.arq_spinlock);
        return status;
 }