iwlwifi: pcie: give a meaningful name to interrupt request

Instead of passing DRV_NAME pass a string that
represents the reason for the interrupt.

Signed-off-by: Sharon Dvir <sharon.dvir@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

1 files changed, 28 insertions, 1 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
index ae95533e587d..b10e3633df1a 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
@@ -1598,6 +1598,29 @@ static void iwl_pcie_irq_set_affinity(struct iwl_trans *trans)
         }
 }
 
+static const char *queue_name(struct device *dev,
+                              struct iwl_trans_pcie *trans_p, int i)
+{
+        if (trans_p->shared_vec_mask) {
+                int vec = trans_p->shared_vec_mask &
+                          IWL_SHARED_IRQ_FIRST_RSS ? 1 : 0;
+
+                if (i == 0)
+                        return DRV_NAME ": shared IRQ";
+
+                return devm_kasprintf(dev, GFP_KERNEL,
+                                      DRV_NAME ": queue %d", i + vec);
+        }
+        if (i == 0)
+                return DRV_NAME ": default queue";
+
+        if (i == trans_p->alloc_vecs - 1)
+                return DRV_NAME ": exception";
+
+        return devm_kasprintf(dev, GFP_KERNEL,
+                              DRV_NAME  ": queue %d", i);
+}
+
 static int iwl_pcie_init_msix_handler(struct pci_dev *pdev,
                                       struct iwl_trans_pcie *trans_pcie)
 {
@@ -1606,6 +1629,10 @@ static int iwl_pcie_init_msix_handler(struct pci_dev *pdev,
         for (i = 0; i < trans_pcie->alloc_vecs; i++) {
                 int ret;
                 struct msix_entry *msix_entry;
+                const char *qname = queue_name(&pdev->dev, trans_pcie, i);
+
+                if (!qname)
+                        return -ENOMEM;
 
                 msix_entry = &trans_pcie->msix_entries[i];
                 ret = devm_request_threaded_irq(&pdev->dev,
@@ -1615,7 +1642,7 @@ static int iwl_pcie_init_msix_handler(struct pci_dev *pdev,
                                                 iwl_pcie_irq_msix_handler :
                                                 iwl_pcie_irq_rx_msix_handler,
                                                 IRQF_SHARED,
-                                                DRV_NAME,
+                                                qname,
                                                 msix_entry);
                 if (ret) {
                         IWL_ERR(trans_pcie->trans,