[PATCH] Replace scsi_host flags with scsi_device sdev_bflags

Replace the scsi_host flags with scsi_device sdev_bflags. Change USB to
set sdev_bflags in its new slave_alloc function.

drivers/scsi/scsi_devinfo.c

@@ -333,7 +333,7 @@ int scsi_get_device_flags(struct scsi_device *sdev, unsigned char *vendor,
 	struct scsi_dev_info_list *devinfo;
 	unsigned int bflags;
 
-	bflags = sdev->host->hostt->flags;
+	bflags = sdev->sdev_bflags;
 	if (!bflags)
 		bflags = scsi_default_dev_flags;
 

drivers/usb/storage/scsiglue.c

@@ -64,6 +64,17 @@ static const char* host_info(struct Scsi_Host *host)
 	return "SCSI emulation for USB Mass Storage devices";
 }
 
+static int slave_alloc (struct scsi_device *sdev)
+{
+	/*
+	 * Set default bflags. These can be overridden for individual
+	 * models and vendors via the scsi devinfo mechanism.
+	 */
+	sdev->sdev_bflags = (BLIST_MS_SKIP_PAGE_08 | BLIST_MS_SKIP_PAGE_3F |
+			     BLIST_USE_10_BYTE_MS);
+	return 0;
+}
+
 static int slave_configure (struct scsi_device *sdev)
 {
 	/* Scatter-gather buffers (all but the last) must have a length
@@ -365,6 +376,7 @@ struct scsi_host_template usb_stor_host_template = {
 	/* unknown initiator id */
 	.this_id =			-1,
 
+	.slave_alloc =			slave_alloc,
 	.slave_configure =		slave_configure,
 
 	/* lots of sg segments can be handled */
@@ -385,10 +397,6 @@ struct scsi_host_template usb_stor_host_template = {
 	/* sysfs device attributes */
 	.sdev_attrs =			sysfs_device_attr_list,
 
-	/* modify scsi_device bits on probe */
-	.flags = (BLIST_MS_SKIP_PAGE_08 | BLIST_MS_SKIP_PAGE_3F |
-		  BLIST_USE_10_BYTE_MS),
-
 	/* module management */
 	.module =			THIS_MODULE
 };

include/scsi/scsi_device.h

@@ -67,6 +67,10 @@ struct scsi_device {
 	unsigned char current_tag;	/* current tag */
 	struct scsi_target      *sdev_target;   /* used only for single_lun */
 
+	unsigned int	sdev_bflags; /* black/white flags as also found in
+				 * scsi_devinfo.[hc]. For now used only to
+				 * pass settings from slave_alloc to scsi
+				 * core. */
 	unsigned online:1;
 
 	unsigned writeable:1;

include/scsi/scsi_host.h

@@ -345,12 +345,6 @@ struct scsi_host_template {
 	 * module_init/module_exit.
 	 */
 	struct list_head legacy_hosts;
-
-	/*
-	 * Default flags settings, these modify the setting of scsi_device
-	 * bits.
-	 */
-	unsigned int flags;
 };
 
 /*