From d777aaf386ba71d6fbe803c015330a766cad53d8 Mon Sep 17 00:00:00 2001 From: Akinobu Mita Date: Mon, 22 Sep 2008 14:56:47 -0700 Subject: [PATCH] [SCSI] ipr: use memory_read_from_buffer() Signed-off-by: Akinobu Mita Signed-off-by: Andrew Morton Acked-by: Brian King Signed-off-by: James Bottomley --- drivers/scsi/ipr.c | 16 +++++----------- 1 file changed, 5 insertions(+), 11 deletions(-) diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c index d30eb7ba018e..de62f4dfeb0e 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 = { -- 2.20.1