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-rw-r--r--drivers/scsi/libata-scsi.c27
1 files changed, 26 insertions, 1 deletions
diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c
index cfbceb50471..07b1e7cc61d 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;