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authorSteve Wise <swise@opengridcomputing.com>2010-09-29 18:21:33 +0000
committerRoland Dreier <rolandd@cisco.com>2010-10-11 20:15:14 -0700
commit3160977a6e66ea4c4b4f33010f5d04f0004b938c (patch)
tree233bff2c8bb78f6a0094f597bcfda40e94586a0d /drivers/infiniband
parent8bbac892fb75d20fa274ca026e24faf00afbf9dd (diff)
downloadlinux-3160977a6e66ea4c4b4f33010f5d04f0004b938c.tar.bz2
RDMA/cxgb4: Use simple_read_from_buffer() for debugfs handlers
We can replace our equivalent open-coded version. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/hw/cxgb4/device.c26
1 files changed, 1 insertions, 25 deletions
diff --git a/drivers/infiniband/hw/cxgb4/device.c b/drivers/infiniband/hw/cxgb4/device.c
index b25435736d44..22a290d0d5bf 100644
--- a/drivers/infiniband/hw/cxgb4/device.c
+++ b/drivers/infiniband/hw/cxgb4/device.c
@@ -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)