scsi: remove driver_data direct access of struct device

In the near future, the driver core is going to not allow direct access
to the driver_data pointer in struct device.  Instead, the functions
dev_get_drvdata() and dev_set_drvdata() should be used.  These functions
have been around since the beginning, so are backwards compatible with
all older kernel versions.

Cc: linux-scsi@vger.kernel.org
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/scsi/libsrp.c b/drivers/scsi/libsrp.c
index 15e2d13..2742ae8 100644
--- a/drivers/scsi/libsrp.c
+++ b/drivers/scsi/libsrp.c
@@ -135,7 +135,7 @@
 	INIT_LIST_HEAD(&target->cmd_queue);
 
 	target->dev = dev;
-	target->dev->driver_data = target;
+	dev_set_drvdata(target->dev, target);
 
 	target->srp_iu_size = iu_size;
 	target->rx_ring_size = nr;