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From: Hannes Reinecke <hare@suse.de>
To: Bart Van Assche <bvanassche@acm.org>,
	"Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>,
	James Bottomley <james.bottomley@hansenpartnership.com>,
	Johannes Thumshirn <jthumshirn@suse.de>,
	linux-scsi@vger.kernel.org
Subject: Re: [PATCH 11/24] advansys: kill driver_defined status byte accessors
Date: Tue, 22 Oct 2019 08:25:56 +0200	[thread overview]
Message-ID: <88bb3bdd-f478-16c2-b198-3e6430604e17@suse.de> (raw)
In-Reply-To: <6e710e3c-1812-4a4d-f9d5-671161db261a@acm.org>

On 10/21/19 6:37 PM, Bart Van Assche wrote:
> On 10/21/19 2:53 AM, Hannes Reinecke wrote:
>> @@ -6021,43 +6015,28 @@ static void adv_isr_callback(ADV_DVC_VAR
>> *adv_dvc_varp, ADV_SCSI_REQ_Q *scsiqp)
>>                   ASC_DBG(2, "SAM_STAT_CHECK_CONDITION\n");
>>                   ASC_DBG_PRT_SENSE(2, scp->sense_buffer,
>>                             SCSI_SENSE_BUFFERSIZE);
>> -                /*
>> -                 * Note: The 'status_byte()' macro used by
>> -                 * target drivers defined in scsi.h shifts the
>> -                 * status byte returned by host drivers right
>> -                 * by 1 bit.  This is why target drivers also
>> -                 * use right shifted status byte definitions.
>> -                 * For instance target drivers use
>> -                 * CHECK_CONDITION, defined to 0x1, instead of
>> -                 * the SCSI defined check condition value of
>> -                 * 0x2. Host drivers are supposed to return
>> -                 * the status byte as it is defined by SCSI.
>> -                 */
>> -                scp->result = DRIVER_BYTE(DRIVER_SENSE) |
>> -                    STATUS_BYTE(scsiqp->scsi_status);
>> -            } else {
>> -                scp->result = STATUS_BYTE(scsiqp->scsi_status);
>>               }
>> +            scp->result = status_byte(scsiqp->scsi_status);
>>               break;
> 
> Did you really want to delete the code that sets DRIVER_SENSE?
> 
Yes. SAM_STAT_CHECK_CONDITION is already set, and the whole point of
this patchset was to drop the DRIVER_SENSE usage.

>> @@ -6789,47 +6768,30 @@ static void asc_isr_callback(ASC_DVC_VAR
>> *asc_dvc_varp, ASC_QDONE_INFO *qdonep)
>>                   ASC_DBG(2, "SAM_STAT_CHECK_CONDITION\n");
>>                   ASC_DBG_PRT_SENSE(2, scp->sense_buffer,
>>                             SCSI_SENSE_BUFFERSIZE);
>> -                /*
>> -                 * Note: The 'status_byte()' macro used by
>> -                 * target drivers defined in scsi.h shifts the
>> -                 * status byte returned by host drivers right
>> -                 * by 1 bit.  This is why target drivers also
>> -                 * use right shifted status byte definitions.
>> -                 * For instance target drivers use
>> -                 * CHECK_CONDITION, defined to 0x1, instead of
>> -                 * the SCSI defined check condition value of
>> -                 * 0x2. Host drivers are supposed to return
>> -                 * the status byte as it is defined by SCSI.
>> -                 */
>> -                scp->result = DRIVER_BYTE(DRIVER_SENSE) |
>> -                    STATUS_BYTE(qdonep->d3.scsi_stat);
>> -            } else {
>> -                scp->result = STATUS_BYTE(qdonep->d3.scsi_stat);
>>               }
>> +            scp->result = status_byte(qdonep->d3.scsi_stat);
>>               break;
> 
> Same comment here: did you really want to delete the code that sets
> DRIVER_SENSE?
> 
See above: yes.
That was kinda the point of this patchset.

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		      Teamlead Storage & Networking
hare@suse.de			                  +49 911 74053 688
SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 Nürnberg
HRB 247165 (AG München), GF: Felix Imendörffer

  reply	other threads:[~2019-10-22  6:26 UTC|newest]

Thread overview: 64+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-21  9:52 [PATCH RFC 00/24] scsi: Revamp result values Hannes Reinecke
2019-10-21  9:52 ` [PATCH 01/24] aic7xxx,aic79xxx: remove driver-defined SAM status definitions Hannes Reinecke
2019-10-21  9:53 ` [PATCH 02/24] bfa: drop driver-defined SCSI status codes Hannes Reinecke
2019-10-21  9:53 ` [PATCH 03/24] wd33c93: use SCSI status Hannes Reinecke
2019-10-21 18:41   ` kbuild test robot
2019-10-21 18:41     ` kbuild test robot
2019-10-21 23:16   ` Finn Thain
2019-10-22  5:59     ` Hannes Reinecke
2019-10-21  9:53 ` [PATCH 04/24] acornscsi: use standard defines Hannes Reinecke
2019-10-21  9:53 ` [PATCH 05/24] scsi: use standard SAM status codes Hannes Reinecke
2019-10-21 23:17   ` Finn Thain
2019-10-22  6:00     ` Hannes Reinecke
2019-10-21  9:53 ` [PATCH 06/24] scsi: change status_byte() to return the standard SCSI status Hannes Reinecke
2019-10-22 12:35   ` Steffen Maier
2019-10-21  9:53 ` [PATCH 07/24] target_core: Fixup target_complete_cmd() usage Hannes Reinecke
2019-10-21  9:53 ` [PATCH 08/24] sg: use SAM status definitions and avoid using masked_status Hannes Reinecke
2019-10-21  9:53 ` [PATCH 09/24] scsi: Kill obsolete linux-specific status codes Hannes Reinecke
2019-10-21 18:12   ` kbuild test robot
2019-10-21 18:12     ` kbuild test robot
2019-10-21 18:56   ` kbuild test robot
2019-10-21 18:56     ` kbuild test robot
2019-10-21  9:53 ` [PATCH 10/24] scsi: introduce set_status_byte() Hannes Reinecke
2019-10-21 22:12   ` Finn Thain
2019-10-22  5:56     ` Hannes Reinecke
2019-10-21  9:53 ` [PATCH 11/24] advansys: kill driver_defined status byte accessors Hannes Reinecke
2019-10-21 16:37   ` Bart Van Assche
2019-10-22  6:25     ` Hannes Reinecke [this message]
2019-10-21  9:53 ` [PATCH 12/24] scsi: introduce scsi_build_sense() Hannes Reinecke
2019-10-21 23:31   ` Finn Thain
2019-10-22  6:02     ` Hannes Reinecke
2019-10-22 12:21   ` Steffen Maier
2019-10-21  9:53 ` [PATCH 13/24] scsi: Kill DRIVER_SENSE Hannes Reinecke
2019-10-21 23:44   ` Finn Thain
2019-10-22  6:10     ` Hannes Reinecke
2021-06-04  6:40   ` Jiri Slaby
2021-06-07 12:21     ` Hannes Reinecke
2021-06-07 12:30       ` Martin K. Petersen
2021-06-07 13:02         ` Hannes Reinecke
2021-06-10 10:52           ` Jiri Slaby
2021-06-10 14:01             ` Hannes Reinecke
2021-06-11  4:50               ` Jiri Slaby
2021-06-11  7:38                 ` Hannes Reinecke
2021-06-14  6:29                   ` Jiri Slaby
2021-06-14  7:20                   ` Jiri Slaby
2019-10-21  9:53 ` [PATCH 14/24] scsi: Kill DRIVER_HARD Hannes Reinecke
2019-10-21  9:53 ` [PATCH 15/24] scsi_error: use DID_TIME_OUT instead of DRIVER_TIMEOUT Hannes Reinecke
2019-10-21  9:53 ` [PATCH 16/24] scsi: Kill DRIVER_TIMEOUT Hannes Reinecke
2019-10-21  9:53 ` [PATCH 17/24] scsi: do not use DRIVER_INVALID Hannes Reinecke
2019-10-21  9:53 ` [PATCH 18/24] st: return error code in st_scsi_execute() Hannes Reinecke
2019-10-21 16:41   ` Bart Van Assche
2019-10-22  6:28     ` Hannes Reinecke
2019-10-22 14:54       ` Bart Van Assche
2019-10-21  9:53 ` [PATCH 19/24] scsi_ioctl: return error code when blk_map_user() fails Hannes Reinecke
2019-10-21 16:44   ` Bart Van Assche
2019-10-22  6:32     ` Hannes Reinecke
2019-10-21  9:53 ` [PATCH 20/24] scsi_dh_alua: do not interpret DRIVER_ERROR Hannes Reinecke
2019-10-21  9:53 ` [PATCH 21/24] xen-scsiback: stop using DRIVER_ERROR Hannes Reinecke
2019-10-21  9:53 ` [PATCH 22/24] scsi: " Hannes Reinecke
2019-10-21  9:53 ` [PATCH 23/24] scsi: Kill DRIVER_MEDIA, DRIVER_SOFT, and DRIVER_BUSY Hannes Reinecke
2019-10-21  9:53 ` [PATCH 24/24] scsi: Drop now obsolete driver_byte definitions Hannes Reinecke
2019-10-21 18:32 ` [PATCH RFC 00/24] scsi: Revamp result values Douglas Gilbert
2019-10-21 23:20   ` Finn Thain
2019-10-22  6:24   ` Hannes Reinecke
2019-10-31 11:04 [PATCHv2 00/24] Revamp SCSI " Hannes Reinecke
2019-10-31 11:04 ` [PATCH 11/24] advansys: kill driver_defined status byte accessors Hannes Reinecke

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