lkdtm: fix for CONFIG_SCSI=n

From: Randy Dunlap <[email protected]>

Fix lkdtm test code for case of CONFIG_SCSI=n, to avoid build errors:

In file included from linux-next-20080618/tests/lkdtm.c:55:
linux-next-20080618/include/scsi/scsi_cmnd.h:28:25: warning: "BLK_MAX_CDB" is not defined linux-next-20080618/include/scsi/scsi_cmnd.h:29:3: error: #error MAX_COMMAND_SIZE can not be bigger than BLK_MAX_CDB In file included from linux-next-20080618/tests/lkdtm.c:55:
linux-next-20080618/include/scsi/scsi_cmnd.h: In function 'scsi_bidi_cmnd':
linux-next-20080618/include/scsi/scsi_cmnd.h:183: error: implicit declaration of function 'blk_bidi_rq' linux-next-20080618/include/scsi/scsi_cmnd.h:184: error: dereferencing pointer to incomplete type linux-next-20080618/include/scsi/scsi_cmnd.h: In function 'scsi_in':
linux-next-20080618/include/scsi/scsi_cmnd.h:190: error: dereferencing pointer to incomplete type make[2]: *** [tests/lkdtm.o] Error 1

---

 tests/lkdtm.c |    6 ++++++
 1 file changed, 6 insertions(+)

diff -puN tests/lkdtm.c~lkdtm-fix-for-config_scsi=n tests/lkdtm.c
@@ -175,12 +175,14 @@ static int jp_hrtimer_start(struct hrtim
 	return 0;
 }
 
+#ifdef CONFIG_SCSI
 static int jp_scsi_dispatch_cmd(struct scsi_cmnd *cmd)
 {
 	lkdtm_handler();
 	jprobe_return();
 	return 0;
 }
+#endif
 
 #ifdef CONFIG_IDE
 int jp_generic_ide_ioctl(ide_drive_t *drive, struct file *file,

@@ -307,8 +309,12 @@ static int __init lkdtm_module_init(void
 		lkdtm.entry = (kprobe_opcode_t*) jp_hrtimer_start;
 		break;
 	case SCSI_DISPATCH_CMD:
+#ifdef CONFIG_SCSI
 		lkdtm.kp.symbol_name = "scsi_dispatch_cmd";
 		lkdtm.entry = (kprobe_opcode_t*) jp_scsi_dispatch_cmd;
+#else
+		printk(KERN_INFO "lkdtm : Crash point not available\n");
+#endif
 		break;
 	case IDE_CORE_CP:
 #ifdef CONFIG_IDE

_