w1: add touch block command
Writes and returns sampled data back to userspace.
Signed-off-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/w1/w1_netlink.c b/drivers/w1/w1_netlink.c
index 2e07b59..cae556c 100644
--- a/drivers/w1/w1_netlink.c
+++ b/drivers/w1/w1_netlink.c
@@ -108,6 +108,10 @@
cmd->cmd, cmd->len);
switch (cmd->cmd) {
+ case W1_CMD_TOUCH:
+ w1_touch_block(sl->master, cmd->data, cmd->len);
+ w1_send_read_reply(sl, msg, hdr, cmd);
+ break;
case W1_CMD_READ:
w1_read_block(sl->master, cmd->data, cmd->len);
w1_send_read_reply(sl, msg, hdr, cmd);
@@ -208,9 +212,6 @@
break;
}
- if (!mlen)
- goto out_cont;
-
if (m->type == W1_MASTER_CMD) {
dev = w1_search_master_id(m->id.mst.id);
} else if (m->type == W1_SLAVE_CMD) {
@@ -227,6 +228,10 @@
goto out_cont;
}
+ err = 0;
+ if (!mlen)
+ goto out_cont;
+
mutex_lock(&dev->mutex);
if (sl && w1_reset_select_slave(sl)) {