i40e: rename variables in interrupt handler

To be more straightforward, two local variables in interrupt
handler are renamed.

Signed-off-by: Helin Zhang <helin.zhang@intel.com>
Reviewed-by: Jing Chen <jing.d.chen@intel.com>
Reviewed-by: Jijiang Liu <jijiang.liu@intel.com>

diff --git a/lib/librte_pmd_i40e/i40e_ethdev.c b/lib/librte_pmd_i40e/i40e_ethdev.c
index a860af7..91931cf 100644 (file)
--- a/lib/librte_pmd_i40e/i40e_ethdev.c
+++ b/lib/librte_pmd_i40e/i40e_ethdev.c
@@ -3546,53 +3546,53 @@ i40e_dev_interrupt_handler(__rte_unused struct rte_intr_handle *handle,
 {
        struct rte_eth_dev *dev = (struct rte_eth_dev *)param;
        struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
-       uint32_t cause, enable;
+       uint32_t icr0, icr0_ena;
 
        i40e_pf_disable_irq0(hw);
 
-       cause = I40E_READ_REG(hw, I40E_PFINT_ICR0);
-       enable = I40E_READ_REG(hw, I40E_PFINT_ICR0_ENA);
+       icr0 = I40E_READ_REG(hw, I40E_PFINT_ICR0);
+       icr0_ena = I40E_READ_REG(hw, I40E_PFINT_ICR0_ENA);
 
        /* Shared IRQ case, return */
-       if (!(cause & I40E_PFINT_ICR0_INTEVENT_MASK)) {
+       if (!(icr0 & I40E_PFINT_ICR0_INTEVENT_MASK)) {
                PMD_DRV_LOG(INFO, "Port%d INT0:share IRQ case, "
                            "no INT event to process", hw->pf_id);
                goto done;
        }
 
-       if (cause & I40E_PFINT_ICR0_LINK_STAT_CHANGE_MASK) {
+       if (icr0 & I40E_PFINT_ICR0_LINK_STAT_CHANGE_MASK) {
                PMD_DRV_LOG(INFO, "INT:Link status changed");
                i40e_dev_link_update(dev, 0);
        }
 
-       if (cause & I40E_PFINT_ICR0_ECC_ERR_MASK)
+       if (icr0 & I40E_PFINT_ICR0_ECC_ERR_MASK)
                PMD_DRV_LOG(INFO, "INT:Unrecoverable ECC Error");
 
-       if (cause & I40E_PFINT_ICR0_MAL_DETECT_MASK)
+       if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK)
                PMD_DRV_LOG(INFO, "INT:Malicious programming detected");
 
-       if (cause & I40E_PFINT_ICR0_GRST_MASK)
+       if (icr0 & I40E_PFINT_ICR0_GRST_MASK)
                PMD_DRV_LOG(INFO, "INT:Global Resets Requested");
 
-       if (cause & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK)
+       if (icr0 & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK)
                PMD_DRV_LOG(INFO, "INT:PCI EXCEPTION occured");
 
-       if (cause & I40E_PFINT_ICR0_HMC_ERR_MASK)
+       if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK)
                PMD_DRV_LOG(INFO, "INT:HMC error occured");
 
        /* Add processing func to deal with VF reset vent */
-       if (cause & I40E_PFINT_ICR0_VFLR_MASK) {
+       if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
                PMD_DRV_LOG(INFO, "INT:VF reset detected");
                i40e_dev_handle_vfr_event(dev);
        }
        /* Find admin queue event */
-       if (cause & I40E_PFINT_ICR0_ADMINQ_MASK) {
+       if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
                PMD_DRV_LOG(INFO, "INT:ADMINQ event");
                i40e_dev_handle_aq_msg(dev);
        }
 
 done:
-       I40E_WRITE_REG(hw, I40E_PFINT_ICR0_ENA, enable);
+       I40E_WRITE_REG(hw, I40E_PFINT_ICR0_ENA, icr0_ena);
        /* Re-enable interrupt from device side */
        i40e_pf_enable_irq0(hw);
        /* Re-enable interrupt from host side */