On Tue, 31 Jul 2007 10:59:51 +0300 Boaz Harrosh wrote: > Randy Dunlap wrote: > > > > Since you grok all of that (above), maybe you can help here: > > > > With these 6 patches applied, I do the following: > > > > 1. insert PCMCIA aha152x card with SCSI drive attached (/dev/sdb4) > > 2. mount -t vfat /dev/sdb4 /mnt/disk > > 3. play with /mnt/disk > > 4. umount /mnt/disk > > > > Now I would like to rmmod the aha152x_cs module, but its use count > > is 2. Even if I eject the card, its use count stays at 2. > > Maybe the reset or check_condition patch doesn't clean up correctly, > > or one of them isn't releasing a used resource ? > > > > (this is 2.6.23-rc1 + your 6 patches + 1 acpi seq-file throttling fix.) > > > > I had an hard look and a very careful line-by-line compare > and I can't find anything obvious. Could you do a bisect. > maybe it will give me a clue as to where to look. Also please > Enable debug prints. Maybe the driver is stuck at some state > and does not exit. The good news is that this problem has nothing to do with this patch series. The bad news is that this problem is there anyway. When I umount /mnt/disk and then eject the SCSI adapter card, a sync-cache SCSI command is sent to the LLD and its use count increments, but the LLD cannot send this command to the drive. The LLD never recovers from this situation. [ 88.821277] pccard: card ejected from slot 0 [ 88.830891] sd 2:0:4:0: [sdb] Synchronizing SCSI cache [ 88.836187] (scsi2:4:0) queue: f7fab1a0; cmd_len=10 pieces=0 size=0 cmnd=Synchronize Cac he(10) 35 00 00 00 00 00 00 00 00 00 [ 88.847545] (scsi-1:-1:-1) (aha152x_internal_queue:1039) locking [ 88.853528] (scsi-1:-1:-1) (aha152x_internal_queue:1039) locked [ 88.859437] (scsi-1:-1:-1) (aha152x_internal_queue:1055) unlocking (locked at aha152x_in ternal_queue:1039) [ 88.869051] (scsi-1:-1:-1) (aha152x_internal_queue:1055) unlocked [ 89.884469] (scsi-1:-1:-1) (aha152x_abort:1113) locking [ 89.889717] (scsi-1:-1:-1) (aha152x_abort:1113) locked [ 89.894835] (scsi-1:-1:-1) (aha152x_abort:1123) unlocking (locked at aha152x_abort:1113) [ 89.902904] (scsi-1:-1:-1) (aha152x_abort:1123) unlocked [ 89.908224] (scsi2:4:0) queue: f7fab1a0; cmd_len=6 pieces=0 size=0 cmnd=Test Unit Ready 00 00 00 00 00 00 [ 89.917878] (scsi-1:-1:-1) (aha152x_internal_queue:1039) locking [ 89.923861] (scsi-1:-1:-1) (aha152x_internal_queue:1039) locked [ 89.929764] (scsi-1:-1:-1) (aha152x_internal_queue:1055) unlocking (locked at aha152x_in ternal_queue:1039) [ 89.939375] (scsi-1:-1:-1) (aha152x_internal_queue:1055) unlocked [ 90.415863] (scsi-1:-1:-1) (aha152x_abort:1113) locking [ 90.421098] (scsi-1:-1:-1) (aha152x_abort:1113) locked [ 90.426219] (scsi-1:-1:-1) (aha152x_abort:1123) unlocking (locked at aha152x_abort:1113) [ 90.434289] (scsi-1:-1:-1) (aha152x_abort:1123) unlocked [ 90.439593] (scsi-1:-1:-1) (aha152x_device_reset:1173) locking [ 90.445412] (scsi-1:-1:-1) (aha152x_device_reset:1173) locked [ 90.451134] (scsi-1:-1:-1) (aha152x_device_reset:1176) unlocking (locked at aha152x_devi ce_reset:1173) [ 90.460413] (scsi-1:-1:-1) (aha152x_device_reset:1176) unlocked [ 90.466319] (scsi2:4:0) queue: f7fab1a0; cmd_len=0 pieces=0 size=0 cmnd=Synchronize Cach e(10) 35 00 00 00 00 00 00 00 00 00 [ 90.477686] (scsi2:4:0) cannot reuse command --- ~Randy *** Remember to use Documentation/SubmitChecklist when testing your code *** - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
