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>
diff --git a/drivers/net/ethernet/qlogic/qed/qed_dev.c b/drivers/net/ethernet/qlogic/qed/qed_dev.c
index 2a7c875..579c6d5 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_dev.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_dev.c
@@ -835,6 +835,11 @@
 	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)