libertas: ensure response buffer size is always set for lbs_cmd_with_response
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/libertas/cmd.h b/drivers/net/wireless/libertas/cmd.h
index 2f4c1ec..e334f0e 100644
--- a/drivers/net/wireless/libertas/cmd.h
+++ b/drivers/net/wireless/libertas/cmd.h
@@ -9,6 +9,10 @@
#define lbs_cmd(priv, cmdnr, cmd, cb, cb_arg) \
__lbs_cmd(priv, cmdnr, &(cmd)->hdr, sizeof(*(cmd)), cb, cb_arg)
+
+/* lbs_cmd_with_response() infers the size of the command to be _sent_
+ and requires that the caller sets cmd->size to the (LE) size of
+ the _response_ buffer. */
#define lbs_cmd_with_response(priv, cmdnr, cmd) \
lbs_cmd(priv, cmdnr, cmd, lbs_cmd_copyback, (unsigned long) (cmd))