Bluetooth: Remove spurious error message

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.

Since real_len variable was used only to allow conditional error
message it is now also removed.

[72454.143336] bt_err_ratelimited: 10 callbacks suppressed
[72454.143337] Bluetooth: hci0: advertising data len corrected
[72454.296314] Bluetooth: hci0: advertising data len corrected
[72454.892329] Bluetooth: hci0: advertising data len corrected
[72455.051319] Bluetooth: hci0: advertising data len corrected
[72455.357326] Bluetooth: hci0: advertising data len corrected
[72455.663295] Bluetooth: hci0: advertising data len corrected
[72455.787278] Bluetooth: hci0: advertising data len corrected
[72455.942278] Bluetooth: hci0: advertising data len corrected
[72456.094276] Bluetooth: hci0: advertising data len corrected
[72456.249137] Bluetooth: hci0: advertising data len corrected
[72459.416333] bt_err_ratelimited: 13 callbacks suppressed
[72459.416334] Bluetooth: hci0: advertising data len corrected
[72459.721334] Bluetooth: hci0: advertising data len corrected
[72460.011317] Bluetooth: hci0: advertising data len corrected
[72460.327171] Bluetooth: hci0: advertising data len corrected
[72460.638294] Bluetooth: hci0: advertising data len corrected
[72460.946350] Bluetooth: hci0: advertising data len corrected
[72461.225320] Bluetooth: hci0: advertising data len corrected
[72461.690322] Bluetooth: hci0: advertising data len corrected
[72462.118318] Bluetooth: hci0: advertising data len corrected
[72462.427319] Bluetooth: hci0: advertising data len corrected
[72464.546319] bt_err_ratelimited: 7 callbacks suppressed
[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
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index d739504..04b2509 100644 (file)
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -5450,7 +5450,7 @@ static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
        struct hci_conn *conn;
        bool match;
        u32 flags;
-       u8 *ptr, real_len;
+       u8 *ptr;
 
        switch (type) {
        case LE_ADV_IND:
@@ -5481,14 +5481,10 @@ static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
                        break;
        }
 
-       real_len = ptr - data;
-
-       /* 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;
-       }
+       /* Adjust for actual length. This handles the case when remote
+        * device is advertising with incorrect data length.
+        */
+       len = ptr - data;
 
        /* If the direct address is present, then this report is from
         * a LE Direct Advertising Report event. In that case it is