From 3a22550ab50a2bed1779c7d03c9f0239d33cc514 Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Mon, 5 Sep 2022 22:27:24 +0200 Subject: net: mac802154: Avoid displaying misleading debug information With DEBUG defined, any frame received will see its MHR fields (fc and addresses, mainly) being printed in the kernel log buffer, unconditionally. In most cases this is fine, but in some specific cases (like Acknowledgment frames, where both the source and destination addressing fields are omitted), it displays garbage which is misleading. Only print the addressing fields when they are present, which clarifies the logs. Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/r/20220905202724.1322046-1-miquel.raynal@bootlin.com Signed-off-by: Stefan Schmidt --- net/mac802154/rx.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'net/mac802154') diff --git a/net/mac802154/rx.c b/net/mac802154/rx.c index 6640bd237352..d1f7b8df41fe 100644 --- a/net/mac802154/rx.c +++ b/net/mac802154/rx.c @@ -114,8 +114,10 @@ fail: static void ieee802154_print_addr(const char *name, const struct ieee802154_addr *addr) { - if (addr->mode == IEEE802154_ADDR_NONE) + if (addr->mode == IEEE802154_ADDR_NONE) { pr_debug("%s not present\n", name); + return; + } pr_debug("%s PAN ID: %04x\n", name, le16_to_cpu(addr->pan_id)); if (addr->mode == IEEE802154_ADDR_SHORT) { -- cgit v1.2.3