From d9cef21af03eb56473db5bb20d8754f377a498e7 Mon Sep 17 00:00:00 2001 From: Akinobu Mita Date: Mon, 14 Jul 2008 09:59:15 +0200 Subject: [S390] s390/cio: use memory_read_from_buffer() Signed-off-by: Akinobu Mita Cc: Peter Oberparleiter Signed-off-by: Andrew Morton Signed-off-by Heiko Carstens Signed-off-by: Martin Schwidefsky --- drivers/s390/cio/chp.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) diff --git a/drivers/s390/cio/chp.c b/drivers/s390/cio/chp.c index 8644c80..d58dc9f 100644 --- a/drivers/s390/cio/chp.c +++ b/drivers/s390/cio/chp.c @@ -143,21 +143,14 @@ static ssize_t chp_measurement_chars_read(struct kobject *kobj, { struct channel_path *chp; struct device *device; - unsigned int size; device = container_of(kobj, struct device, kobj); chp = to_channelpath(device); if (!chp->cmg_chars) return 0; - size = sizeof(struct cmg_chars); - - if (off > size) - return 0; - if (off + count > size) - count = size - off; - memcpy(buf, chp->cmg_chars + off, count); - return count; + return memory_read_from_buffer(buf, count, &off, + chp->cmg_chars, sizeof(struct cmg_chars)); } static struct bin_attribute chp_measurement_chars_attr = { -- cgit v1.1