[ARM] ARM FAS216: don't modify scsi_cmnd request_bufflen

SCSI doesn't want drivers to modify request_bufflen, so keep a
driver-private copy of this in the scsi_pointer structure instead.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/drivers/scsi/arm/scsi.h b/drivers/scsi/arm/scsi.h
index 3a39579..21ba571 100644
--- a/drivers/scsi/arm/scsi.h
+++ b/drivers/scsi/arm/scsi.h
@@ -80,6 +80,7 @@
 			 (page_address(SCpnt->SCp.buffer->page) +
 			  SCpnt->SCp.buffer->offset);
 		SCpnt->SCp.this_residual = SCpnt->SCp.buffer->length;
+		SCpnt->SCp.phase = SCpnt->request_bufflen;
 
 #ifdef BELT_AND_BRACES
 		/*
@@ -98,6 +99,7 @@
 	} else {
 		SCpnt->SCp.ptr = (unsigned char *)SCpnt->request_buffer;
 		SCpnt->SCp.this_residual = SCpnt->request_bufflen;
+		SCpnt->SCp.phase = SCpnt->request_bufflen;
 	}
 
 	/*