qed: Prevent 100g from working in MSI

Adapter can support 100g in both MSIx and INTa, but not in MSI.

Signed-off-by: Sudarsana Reddy Kalluru <sudarsana.kalluru@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 15 insertions, 8 deletions

diff --git a/drivers/net/ethernet/qlogic/qed/qed_dev.c b/drivers/net/ethernet/qlogic/qed/qed_dev.c
index 2a7c8755eda0..579c6d500865 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_dev.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_dev.c
@@ -835,6 +835,11 @@ int qed_hw_init(struct qed_dev *cdev,
         u32 load_code, param;
         int rc, mfw_rc, i;
 
+        if ((int_mode == QED_INT_MODE_MSI) && (cdev->num_hwfns > 1)) {
+                DP_NOTICE(cdev, "MSI mode is not supported for CMT devices\n");
+                return -EINVAL;
+        }
+
         if (IS_PF(cdev)) {
                 rc = qed_init_fw_data(cdev, bin_fw_data);
                 if (rc != 0)
diff --git a/drivers/net/ethernet/qlogic/qed/qed_main.c b/drivers/net/ethernet/qlogic/qed/qed_main.c
index 8b22f87033ce..753064679bde 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_main.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_main.c
@@ -413,15 +413,17 @@ static int qed_set_int_mode(struct qed_dev *cdev, bool force_mode)
                 /* Fallthrough */
 
         case QED_INT_MODE_MSI:
-                rc = pci_enable_msi(cdev->pdev);
-                if (!rc) {
-                        int_params->out.int_mode = QED_INT_MODE_MSI;
-                        goto out;
-                }
+                if (cdev->num_hwfns == 1) {
+                        rc = pci_enable_msi(cdev->pdev);
+                        if (!rc) {
+                                int_params->out.int_mode = QED_INT_MODE_MSI;
+                                goto out;
+                        }
 
-                DP_NOTICE(cdev, "Failed to enable MSI\n");
-                if (force_mode)
-                        goto out;
+                        DP_NOTICE(cdev, "Failed to enable MSI\n");
+                        if (force_mode)
+                                goto out;
+                }
                 /* Fallthrough */
 
         case QED_INT_MODE_INTA: