Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
[linux-2.6.git] / drivers / scsi / ipr.c
index 098739deb02e1394dc466f51061284a484245cf8..ded854a6dd35bd0d916f630090fc87990cd59182 100644 (file)
@@ -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 = {