Index: wireless-testing/drivers/net/wireless/b43/main.c
===================================================================
--- wireless-testing.orig/drivers/net/wireless/b43/main.c
+++ wireless-testing/drivers/net/wireless/b43/main.c
@@ -1797,12 +1797,20 @@ static void b43_do_interrupt_thread(stru
 	if (unlikely(merged_dma_reason & (B43_DMAIRQ_FATALMASK |
 					  B43_DMAIRQ_NONFATALMASK))) {
 		if (merged_dma_reason & B43_DMAIRQ_FATALMASK) {
+			u16 command;
+			struct ssb_bus *bus = dev->dev->bus;
+			struct pci_dev *pdev = (bus->bustype ==
+					 SSB_BUSTYPE_PCI) ? bus->host_pci : NULL;
 			b43err(dev->wl, "Fatal DMA error: "
 			       "0x%08X, 0x%08X, 0x%08X, "
 			       "0x%08X, 0x%08X, 0x%08X\n",
 			       dma_reason[0], dma_reason[1],
 			       dma_reason[2], dma_reason[3],
 			       dma_reason[4], dma_reason[5]);
+			if (pdev) {
+				pci_read_config_word(pdev, 0x04, &command);
+				b43err(dev->wl, "Contents of PCI command 0x%x\n", command);
+			}
 			b43err(dev->wl, "This device does not support DMA "
 			       "on your system. It will now be switched to PIO.\n");
 			/* Fall back to PIO transfers if we get fatal DMA errors! */