[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Fri, 5 May 2023 09:25:48 +0100
From: John Garry <john.g.garry@...cle.com>
To: Damien Le Moal <dlemoal@...nel.org>,
Xingui Yang <yangxingui@...wei.com>, jejb@...ux.ibm.com,
martin.petersen@...cle.com, damien.lemoal@...nsource.wdc.com
Cc: linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
linuxarm@...wei.com, prime.zeng@...ilicon.com,
kangfenglong@...wei.com
Subject: Re: [PATCH v2] ata: libata-scsi: Fix get identity data failed
On 05/05/2023 09:17, Damien Le Moal wrote:
>> --- a/drivers/ata/libata-scsi.c
>> +++ b/drivers/ata/libata-scsi.c
>> @@ -26,6 +26,7 @@
>> #include <scsi/scsi_device.h>
>> #include <scsi/scsi_tcq.h>
>> #include <scsi/scsi_transport.h>
>> +#include <scsi/libsas.h>
hmmm... is it really acceptable that libata is referencing libsas? I
didn't think that it would be. libsas uses libata, not the other way around.
>> #include <linux/libata.h>
>> #include <linux/hdreg.h>
>> #include <linux/uaccess.h>
>> @@ -2745,10 +2746,17 @@ static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap,
>> * Associated ATA device, or %NULL if not found.
>> */
>> struct ata_device *
>> -ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev)
> Why drop the const ?
>
>> +ata_scsi_find_dev(struct ata_port *ap, struct scsi_device *scsidev)
>> {
>> - struct ata_device *dev = __ata_scsi_find_dev(ap, scsidev);
>> + struct ata_device *dev;
>> +
>> + if (ap->flags & ATA_FLAG_SAS_HOST) {
And this is SAS host. Not necessarily libsas (even though with ipr
libata usage gone, it would be the only user).
>> + struct domain_device *ddev = sdev_to_domain_dev(scsidev);
>> +
>> + return sas_to_ata_dev(ddev);
> Do you really need the ddev variable ? Also, this really should be a libsas
> helper. I beleive this pattern is repeated in several places in libsas, so that
> would nicely clean things up.
>
Thanks,
John
Powered by blists - more mailing lists