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[LIBATA] Blacklist certain Maxtor firmware revisions for FUA support

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It looks like they are either discarding or corrupting data when the FUA
command is used, bad.

Signed-off-by: Jens Axboe <axboe@suse.de>
This commit is contained in:
Jens Axboe 2006-01-30 16:09:35 +01:00
parent dfcd77d16b
commit 48bdc8ec4a
1 changed files with 26 additions and 1 deletions
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27
drivers/scsi/libata-scsi.c
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@ -1700,6 +1700,31 @@ static unsigned int ata_msense_rw_recovery(u8 **ptr_io, const u8 *last)
return sizeof(def_rw_recovery_mpage);
}
/*
* We can turn this into a real blacklist if it's needed, for now just
* blacklist any Maxtor BANC1G10 revision firmware
*/
static int ata_dev_supports_fua(u16 *id)
{
unsigned char model[41], fw[9];
if (!ata_id_has_fua(id))
return 0;
model[40] = '\0';
fw[8] = '\0';
ata_dev_id_string(id, model, ATA_ID_PROD_OFS, sizeof(model) - 1);
ata_dev_id_string(id, fw, ATA_ID_FW_REV_OFS, sizeof(fw) - 1);
if (strncmp(model, "Maxtor", 6))
return 1;
if (strncmp(fw, "BANC1G10", 8))
return 1;
return 0; /* blacklisted */
}
/**
* ata_scsiop_mode_sense - Simulate MODE SENSE 6, 10 commands
* @args: device IDENTIFY data / SCSI command of interest.
@ -1797,7 +1822,7 @@ unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf,
return 0;
dpofua = 0;
if (ata_id_has_fua(args->id) && dev->flags & ATA_DFLAG_LBA48 &&
if (ata_dev_supports_fua(args->id) && dev->flags & ATA_DFLAG_LBA48 &&
(!(dev->flags & ATA_DFLAG_PIO) || dev->multi_count))
dpofua = 1 << 4;