diff options
Diffstat (limited to 'drivers/scsi/ipr.c')
| -rw-r--r-- | drivers/scsi/ipr.c | 16 |
1 files changed, 5 insertions, 11 deletions
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c index 098739deb02..ded854a6dd3 100644 --- a/drivers/scsi/ipr.c +++ b/drivers/scsi/ipr.c @@ -2456,20 +2456,14 @@ static ssize_t ipr_read_trace(struct kobject *kobj, struct Scsi_Host *shost = class_to_shost(dev); struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; unsigned long lock_flags = 0; - int size = IPR_TRACE_SIZE; - char *src = (char *)ioa_cfg->trace; - - if (off > size) - return 0; - if (off + count > size) { - size -= off; - count = size; - } + ssize_t ret; spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); - memcpy(buf, &src[off], count); + ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace, + IPR_TRACE_SIZE); spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); - return count; + + return ret; } static struct bin_attribute ipr_trace_attr = { |