[SCSI] correct transport class abstraction to work outside SCSI

I recently tried to construct a totally generic transport class and
found there were certain features missing from the current abstract
transport class.  Most notable is that you have to hang the data on the
class_device but most of the API is framed in terms of the generic
device, not the class_device.

These changes are two fold

- Provide the class_device to all of the setup and configure APIs
- Provide and extra API to take the device and the attribute class and
  return the corresponding class_device

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

2 files changed, 12 insertions, 5 deletions

diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c
index 35d1c1e..96243c7 100644
--- a/drivers/scsi/scsi_transport_fc.c
+++ b/drivers/scsi/scsi_transport_fc.c
@@ -252,7 +252,8 @@ struct fc_internal {
 
 #define to_fc_internal(tmpl)	container_of(tmpl, struct fc_internal, t)
 
-static int fc_target_setup(struct device *dev)
+static int fc_target_setup(struct transport_container *tc, struct device *dev,
+			   struct class_device *cdev)
 {
 	struct scsi_target *starget = to_scsi_target(dev);
 	struct fc_rport *rport = starget_to_rport(starget);
@@ -281,7 +282,8 @@ static DECLARE_TRANSPORT_CLASS(fc_transport_class,
 			       NULL,
 			       NULL);
 
-static int fc_host_setup(struct device *dev)
+static int fc_host_setup(struct transport_container *tc, struct device *dev,
+			 struct class_device *cdev)
 {
 	struct Scsi_Host *shost = dev_to_shost(dev);
 
diff --git a/drivers/scsi/scsi_transport_spi.c b/drivers/scsi/scsi_transport_spi.c
index 02134fc..89f6b7f 100644
--- a/drivers/scsi/scsi_transport_spi.c
+++ b/drivers/scsi/scsi_transport_spi.c
@@ -162,7 +162,8 @@ static inline enum spi_signal_type spi_signal_to_value(const char *name)
 	return SPI_SIGNAL_UNKNOWN;
 }
 
-static int spi_host_setup(struct device *dev)
+static int spi_host_setup(struct transport_container *tc, struct device *dev,
+			  struct class_device *cdev)
 {
 	struct Scsi_Host *shost = dev_to_shost(dev);
 
@@ -196,7 +197,9 @@ static int spi_host_match(struct attribute_container *cont,
 	return &i->t.host_attrs.ac == cont;
 }
 
-static int spi_device_configure(struct device *dev)
+static int spi_device_configure(struct transport_container *tc,
+				struct device *dev,
+				struct class_device *cdev)
 {
 	struct scsi_device *sdev = to_scsi_device(dev);
 	struct scsi_target *starget = sdev->sdev_target;
@@ -214,7 +217,9 @@ static int spi_device_configure(struct device *dev)
 	return 0;
 }
 
-static int spi_setup_transport_attrs(struct device *dev)
+static int spi_setup_transport_attrs(struct transport_container *tc,
+				     struct device *dev,
+				     struct class_device *cdev)
 {
 	struct scsi_target *starget = to_scsi_target(dev);