--- a/src/wl/sys/wl_linux.c
+++ b/src/wl/sys/wl_linux.c
@@ -504,6 +504,7 @@
 #if defined(USE_CFG80211)
 	struct device *parentdev;
 #endif
+	bool msi_supported;
 
 	unit = wl_found + instance_base;
 	err = 0;
@@ -529,6 +530,7 @@
 	}
 	bzero(wl, sizeof(wl_info_t));
 
+	wl->pdev = (struct pci_dev *) btparam;
 	wl->osh = osh;
 	wl->unit = unit;
 	atomic_set(&wl->callbacks, 0);
@@ -654,9 +656,28 @@
 
 	tasklet_init(&wl->tx_tasklet, wl_tx_tasklet, (ulong)wl);
 
+	msi_supported = !wl->pdev->no_msi;
+	pci_info(wl->pdev, "MSI supported: %s\n", msi_supported ? "true" : "false");
+
+	if (msi_supported) {
+		int ret;
+
+		ret = pci_alloc_irq_vectors(wl->pdev, 1, 1, PCI_IRQ_MSI);
+		if (ret < 0) {
+			WL_ERROR(("wl%d: pci_alloc_irq_vectors() failed, ret %d\n", unit, ret));
+			goto fail;
+		}
+		pci_info(wl->pdev, "(MSI) allocated %d IRQ vectors", ret);
+		irq = pci_irq_vector(wl->pdev, 0);
+		pci_info(wl->pdev, "(MSI) requesting IRQ: %d\n", irq);
+	}
+
 	{
-		if (request_irq(irq, wl_isr, IRQF_SHARED, dev->name, wl)) {
-			WL_ERROR(("wl%d: request_irq() failed\n", unit));
+               int ret;
+
+		ret = request_irq(irq, wl_isr, IRQF_SHARED, dev->name, wl);
+		if (ret < 0) {
+			WL_ERROR(("wl%d: request_irq() failed, ret %d\n", unit, ret));
 			goto fail;
 		}
 		dev->irq = irq;
@@ -996,8 +1017,10 @@
 
 	WL_TRACE(("wl: wl_free\n"));
 	{
-		if (wl->dev && wl->dev->irq)
+		if (wl->dev && wl->dev->irq) {
 			free_irq(wl->dev->irq, wl);
+			pci_free_irq_vectors(wl->pdev);
+		}
 	}
 
 #if defined(WL_CONFIG_RFKILL)
--- a/src/wl/sys/wl_linux.h
+++ b/src/wl/sys/wl_linux.h
@@ -21,6 +21,7 @@
 #ifndef _wl_linux_h_
 #define _wl_linux_h_
 
+#include <linux/pci.h>
 #include <wlc_types.h>
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 10, 0)
 #include <wlc_pub.h>
@@ -85,6 +86,7 @@
 	void		*wlc;		
 	osl_t		*osh;		
 	struct net_device *dev;		
+	struct pci_dev *pdev;	
 
 	struct semaphore sem;		
 	spinlock_t	lock;