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RDMA/cxgb4: Use simple_read_from_buffer() for debugfs handlers

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We can replace our equivalent open-coded version.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Steve Wise 2010-09-29 18:21:33 +00:00 committed by Roland Dreier
parent 8bbac892fb
commit 3160977a6e
1 changed files with 1 additions and 25 deletions
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26
drivers/infiniband/hw/cxgb4/device.c
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@ -68,32 +68,8 @@ static ssize_t debugfs_read(struct file *file, char __user *buf, size_t count,
loff_t *ppos)
{
struct c4iw_debugfs_data *d = file->private_data;
loff_t pos = *ppos;
loff_t avail = d->pos;
if (pos < 0)
return -EINVAL;
if (pos >= avail)
return 0;
if (count > avail - pos)
count = avail - pos;
while (count) {
size_t len = 0;
len = min((int)count, (int)d->pos - (int)pos);
if (copy_to_user(buf, d->buf + pos, len))
return -EFAULT;
if (len == 0)
return -EINVAL;
buf += len;
pos += len;
count -= len;
}
count = pos - *ppos;
*ppos = pos;
return count;
return simple_read_from_buffer(buf, count, ppos, d->buf, d->pos);
}
static int dump_qp(int id, void *p, void *data)