diff options
Diffstat (limited to 'drivers/scsi/scsi_sysfs.c')
| -rw-r--r-- | drivers/scsi/scsi_sysfs.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c index e0bd3f790fca..04c2a278076e 100644 --- a/drivers/scsi/scsi_sysfs.c +++ b/drivers/scsi/scsi_sysfs.c @@ -246,6 +246,43 @@ show_shost_active_mode(struct device *dev, static DEVICE_ATTR(active_mode, S_IRUGO | S_IWUSR, show_shost_active_mode, NULL); +static int check_reset_type(char *str) +{ + if (strncmp(str, "adapter", 10) == 0) + return SCSI_ADAPTER_RESET; + else if (strncmp(str, "firmware", 10) == 0) + return SCSI_FIRMWARE_RESET; + else + return 0; +} + +static ssize_t +store_host_reset(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct scsi_host_template *sht = shost->hostt; + int ret = -EINVAL; + char str[10]; + int type; + + sscanf(buf, "%s", str); + type = check_reset_type(str); + + if (!type) + goto exit_store_host_reset; + + if (sht->host_reset) + ret = sht->host_reset(shost, type); + +exit_store_host_reset: + if (ret == 0) + ret = count; + return ret; +} + +static DEVICE_ATTR(host_reset, S_IWUSR, NULL, store_host_reset); + shost_rd_attr(unique_id, "%u\n"); shost_rd_attr(host_busy, "%hu\n"); shost_rd_attr(cmd_per_lun, "%hd\n"); @@ -272,6 +309,7 @@ static struct attribute *scsi_sysfs_shost_attrs[] = { &dev_attr_active_mode.attr, &dev_attr_prot_capabilities.attr, &dev_attr_prot_guard_type.attr, + &dev_attr_host_reset.attr, NULL }; |