scsi-dma-mask modify for andmike's changes

drivers/scsi/hosts.h

@@ -522,6 +522,11 @@ static inline void scsi_set_device(struct Scsi_Host *shost,
         shost->host_gendev = dev;
 }
 
+static inline struct device *scsi_get_device(struct Scsi_Host *shost)
+{
+        return shost->host_gendev;
+}
+
 static inline void scsi_set_pci_device(struct Scsi_Host *shost,
                                        struct pci_dev *pdev)
 {

drivers/scsi/scsi_ioctl.c

@@ -395,7 +395,7 @@ int scsi_ioctl_send_command(Scsi_Device * dev, Scsi_Ioctl_Command * sic)
 static int
 scsi_ioctl_get_pci(Scsi_Device * sdev, void *arg)
 {
-	struct device *dev = sdev->host->host_driverfs_dev.parent;
+	struct device *dev = scsi_get_device(sdev->host);
 
         if (!dev) return -ENXIO;
         return copy_to_user(arg, dev->bus_id,

drivers/scsi/scsi_scan.c

@@ -373,7 +373,7 @@ static void scsi_initialize_merge_fn(struct scsi_device *sd)
 {
 	request_queue_t *q = &sd->request_queue;
 	struct Scsi_Host *sh = sd->host;
-	struct device *dev = sh->host_driverfs_dev.parent;
+	struct device *dev = scsi_get_device(sh);
 	u64 bounce_limit;
 
 	if (sh->highmem_io) {

drivers/scsi/st.c

@@ -3770,7 +3770,7 @@ static int st_attach(Scsi_Device * SDp)
 	tpnt->try_dio = try_direct_io && !SDp->host->unchecked_isa_dma;
 	bounce_limit = BLK_BOUNCE_HIGH; /* Borrowed from scsi_merge.c */
 	if (SDp->host->highmem_io) {
-		struct device *dev = SDp->host->host_driverfs_dev.parent;
+		struct device *dev = scsi_get_device(SDp->host);
 		if (!PCI_DMA_BUS_IS_PHYS)
 			/* Platforms with virtual-DMA translation
 			 * hardware have no practical limit.