hwmon: (drivetemp) Avoid SCT usage on Toshiba DT01ACA family drives

	return err;

}

static const char * const sct_avoid_models[] = {

/*

 * These drives will have WRITE FPDMA QUEUED command timeouts and sometimes just

 * freeze until power-cycled under heavy write loads when their temperature is

 * getting polled in SCT mode. The SMART mode seems to be fine, though.

 *

 * While only the 3 TB model (DT01ACA3) was actually caught exhibiting the

 * problem let's play safe here to avoid data corruption and ban the whole

 * DT01ACAx family.

 * The models from this array are prefix-matched.

 */

	"TOSHIBA DT01ACA",

};

static bool drivetemp_sct_avoid(struct drivetemp_data *st)

{

	struct scsi_device *sdev = st->sdev;

	unsigned int ctr;

	if (!sdev->model)

		return false;

	/*

	 * The "model" field contains just the raw SCSI INQUIRY response

	 * "product identification" field, which has a width of 16 bytes.

	 * This field is space-filled, but is NOT NULL-terminated.

	 */

	for (ctr = 0; ctr < ARRAY_SIZE(sct_avoid_models); ctr++)

		if (!strncmp(sdev->model, sct_avoid_models[ctr],

			     strlen(sct_avoid_models[ctr])))

			return true;

	return false;

}

static int drivetemp_identify_sata(struct drivetemp_data *st)

{

	struct scsi_device *sdev = st->sdev;

	/* bail out if this is not a SATA device */

	if (!is_ata || !is_sata)

		return -ENODEV;

	if (have_sct && drivetemp_sct_avoid(st)) {

		dev_notice(&sdev->sdev_gendev,

			   "will avoid using SCT for temperature monitoring\n");

		have_sct = false;

	}

	if (!have_sct)

		goto skip_sct;