Hi Szymon!
Am Mi., 12. Mai 2021 um 15:34 Uhr schrieb Szymon Janc szymon.janc@codecoup.pl:
Even with rate limited reporting this is very spammy and since it is remote device that is providing bogus data there is no need to report this as error.
[...]
[72464.546319] Bluetooth: hci0: advertising data len corrected [72464.857318] Bluetooth: hci0: advertising data len corrected [72465.163332] Bluetooth: hci0: advertising data len corrected [72465.278331] Bluetooth: hci0: advertising data len corrected [72465.432323] Bluetooth: hci0: advertising data len corrected [72465.891334] Bluetooth: hci0: advertising data len corrected [72466.045334] Bluetooth: hci0: advertising data len corrected [72466.197321] Bluetooth: hci0: advertising data len corrected [72466.340318] Bluetooth: hci0: advertising data len corrected [72466.498335] Bluetooth: hci0: advertising data len corrected [72469.803299] bt_err_ratelimited: 10 callbacks suppressed
Signed-off-by: Szymon Janc szymon.janc@codecoup.pl Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=203753 Cc: stable@vger.kernel.org
net/bluetooth/hci_event.c | 2 -- 1 file changed, 2 deletions(-)
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index 5e99968939ce..abdc44dc0b2f 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -5476,8 +5476,6 @@ static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
/* Adjust for actual length */ if (len != real_len) {
bt_dev_err_ratelimited(hdev, "advertising data len corrected %u -> %u",len, real_len); len = real_len; }
This renders the "if" quite useless since it now always ensures len = real_len and nothing else. At this point, the "if" can be removed, and len can be set unconditionally. Depending on the further context of the patch, destinction between real_len and len may not be needed at all and real_len could be renamed to len, ditching the unused original which is potentially bogus data anyways according to your commit description.
Regards, Kai