cris: use simple_read_from_buffer()
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/cris/kernel/profile.c b/arch/cris/kernel/profile.c
index 44f7b4f..9aa5711 100644
--- a/arch/cris/kernel/profile.c
+++ b/arch/cris/kernel/profile.c
@@ -35,19 +35,16 @@
size_t count, loff_t *ppos)
{
unsigned long p = *ppos;
+ ssize_t ret;
- if (p > SAMPLE_BUFFER_SIZE)
- return 0;
+ ret = simple_read_from_buffer(buf, count, ppos, sample_buffer,
+ SAMPLE_BUFFER_SIZE);
+ if (ret < 0)
+ return ret;
- if (p + count > SAMPLE_BUFFER_SIZE)
- count = SAMPLE_BUFFER_SIZE - p;
- if (copy_to_user(buf, sample_buffer + p,count))
- return -EFAULT;
+ memset(sample_buffer + p, 0, ret);
- memset(sample_buffer + p, 0, count);
- *ppos += count;
-
- return count;
+ return ret;
}
static ssize_t