From 48bdc8ec4aa2ca04e339bf5c3a47677d8dd00bb6 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Mon, 30 Jan 2006 16:09:35 +0100 Subject: [PATCH] [LIBATA] Blacklist certain Maxtor firmware revisions for FUA support It looks like they are either discarding or corrupting data when the FUA command is used, bad. Signed-off-by: Jens Axboe --- drivers/scsi/libata-scsi.c | 27 ++++++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c index cfbceb504718..07b1e7cc61df 100644 --- a/drivers/scsi/libata-scsi.c +++ b/drivers/scsi/libata-scsi.c @@ -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; -- 2.39.5