static void start_stop_endio(struct request *req, int error)
{
struct hp_sw_dh_data *h = req->end_io_data;
unsigned err = SCSI_DH_OK;
if (error || host_byte(req->errors) != DID_OK ||
msg_byte(req->errors) != COMMAND_COMPLETE) {
sdev_printk(KERN_WARNING, h->sdev,
"%s: sending start_stop_unit failed with %x\n",
HP_SW_NAME, req->errors);
err = SCSI_DH_IO;
goto done;
}
if (req->sense_len > 0) {
err = start_done(h->sdev, h->sense);
if (err == SCSI_DH_RETRY) {
err = SCSI_DH_IO;
if (--h->retry_cnt) {
blk_put_request(req);
err = hp_sw_start_stop(h);
if (err == SCSI_DH_OK)
return;
}
}
}
done:
blk_put_request(req);
if (h->callback_fn) {
h->callback_fn(h->callback_data, err);
h->callback_fn = h->callback_data = NULL;
}
return;
}
/*
* hp_sw_activate - Activate a path
* @sdev: sdev on the path to be activated
*
* The HP Active/Passive firmware is pretty simple;
* the passive path reports NOT READY with sense codes
* 0x04/0x02; a START STOP UNIT command will then
* activate the passive path (and deactivate the
* previously active one).
*/
static int hp_sw_activate(struct scsi_device *sdev,
activate_complete fn, void *data)
{
int ret = SCSI_DH_OK;
struct hp_sw_dh_data *h = sdev->handler_data;
ret = hp_sw_tur(sdev, h);
if (ret == SCSI_DH_OK && h->path_state == HP_SW_PATH_PASSIVE)
ret = hp_sw_start_stop(h);
if (fn)
fn(data, ret);
return 0;
}
/*
* hp_sw_activate - Activate a path
* @sdev: sdev on the path to be activated
*
* The HP Active/Passive firmware is pretty simple;
* the passive path reports NOT READY with sense codes
* 0x04/0x02; a START STOP UNIT command will then
* activate the passive path (and deactivate the
* previously active one).
*/
static int hp_sw_activate(struct scsi_device *sdev,
activate_complete fn, void *data)
{
int ret = SCSI_DH_OK;
struct hp_sw_dh_data *h = sdev->handler_data;
ret = hp_sw_tur(sdev, h);
if (ret == SCSI_DH_OK && h->path_state == HP_SW_PATH_PASSIVE) {
h->retry_cnt = h->retries;
h->callback_fn = fn;
h->callback_data = data;
ret = hp_sw_start_stop(h);
if (ret == SCSI_DH_OK)
return 0;
h->callback_fn = h->callback_data = NULL;
}
if (fn)
fn(data, ret);
return 0;
}