diff options
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_attr.c')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_attr.c | 39 |
1 files changed, 23 insertions, 16 deletions
diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c index 1612f9200a5..0f2a9f5d801 100644 --- a/drivers/scsi/qla2xxx/qla_attr.c +++ b/drivers/scsi/qla2xxx/qla_attr.c @@ -91,18 +91,20 @@ qla2x00_sysfs_read_nvram(struct kobject *kobj, { struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj, struct device, kobj))); - unsigned long flags; + int size = ha->nvram_size; + char *nvram_cache = ha->nvram; - if (!capable(CAP_SYS_ADMIN) || off != 0) + if (!capable(CAP_SYS_ADMIN) || off > size || count == 0) return 0; + if (off + count > size) { + size -= off; + count = size; + } - /* Read NVRAM. */ - spin_lock_irqsave(&ha->hardware_lock, flags); - ha->isp_ops->read_nvram(ha, (uint8_t *)buf, ha->nvram_base, - ha->nvram_size); - spin_unlock_irqrestore(&ha->hardware_lock, flags); + /* Read NVRAM data from cache. */ + memcpy(buf, &nvram_cache[off], count); - return ha->nvram_size; + return count; } static ssize_t @@ -144,6 +146,8 @@ qla2x00_sysfs_write_nvram(struct kobject *kobj, /* Write NVRAM. */ spin_lock_irqsave(&ha->hardware_lock, flags); ha->isp_ops->write_nvram(ha, (uint8_t *)buf, ha->nvram_base, count); + ha->isp_ops->read_nvram(ha, (uint8_t *)&ha->nvram, ha->nvram_base, + count); spin_unlock_irqrestore(&ha->hardware_lock, flags); set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); @@ -298,18 +302,20 @@ qla2x00_sysfs_read_vpd(struct kobject *kobj, { struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj, struct device, kobj))); - unsigned long flags; + int size = ha->vpd_size; + char *vpd_cache = ha->vpd; - if (!capable(CAP_SYS_ADMIN) || off != 0) + if (!capable(CAP_SYS_ADMIN) || off > size || count == 0) return 0; + if (off + count > size) { + size -= off; + count = size; + } - /* Read NVRAM. */ - spin_lock_irqsave(&ha->hardware_lock, flags); - ha->isp_ops->read_nvram(ha, (uint8_t *)buf, ha->vpd_base, - ha->vpd_size); - spin_unlock_irqrestore(&ha->hardware_lock, flags); + /* Read NVRAM data from cache. */ + memcpy(buf, &vpd_cache[off], count); - return ha->vpd_size; + return count; } static ssize_t @@ -327,6 +333,7 @@ qla2x00_sysfs_write_vpd(struct kobject *kobj, /* Write NVRAM. */ spin_lock_irqsave(&ha->hardware_lock, flags); ha->isp_ops->write_nvram(ha, (uint8_t *)buf, ha->vpd_base, count); + ha->isp_ops->read_nvram(ha, (uint8_t *)ha->vpd, ha->vpd_base, count); spin_unlock_irqrestore(&ha->hardware_lock, flags); return count; |