From: Jens Axboe <axboe@suse.de>
It's not trivial, here's a hack that should dump the offending opcode
though.
Signed-off-by: Andrew Morton <akpm@osdl.org>
---
25-akpm/drivers/ide/ide.c | 24 ++++++++++++++++++++++++
1 files changed, 24 insertions(+)
diff -puN drivers/ide/ide.c~ide-print-failed-opcode drivers/ide/ide.c
--- 25/drivers/ide/ide.c~ide-print-failed-opcode 2004-06-06 23:14:11.709818160 -0700
+++ 25-akpm/drivers/ide/ide.c 2004-06-06 23:14:11.714817400 -0700
@@ -437,6 +437,30 @@ u8 ide_dump_status (ide_drive_t *drive,
#endif /* FANCY_STATUS_DUMPS */
printk("\n");
}
+ {
+ struct request *rq;
+ int opcode = 0x100;
+
+ spin_lock(&ide_lock);
+ rq = HWGROUP(drive)->rq;
+ spin_unlock(&ide_lock);
+ if (!rq)
+ goto out;
+ if (rq->flags & (REQ_DRIVE_CMD | REQ_DRIVE_TASK)) {
+ char *args = rq->buffer;
+ if (args)
+ opcode = args[0];
+ } else if (rq->flags & REQ_DRIVE_TASKFILE) {
+ ide_task_t *args = rq->special;
+ if (args) {
+ task_struct_t *tf = (task_struct_t *) args->tfRegister;
+ opcode = tf->command;
+ }
+ }
+
+ printk("ide: failed opcode was %x\n", opcode);
+ }
+out:
local_irq_restore(flags);
return err;
}
_