aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/bluetooth
diff options
context:
space:
mode:
authorMarcel Holtmann <marcel@holtmann.org>2017-08-17 21:41:09 +0200
committerJohan Hedberg <johan.hedberg@intel.com>2017-08-17 22:51:50 +0300
commit01d5e44ace8a20fc51e0d530f98acb3c365345a5 (patch)
tree477dc9634fc5d7af5fb23bc6ba17d37ec1f4365e /drivers/bluetooth
parent778ead344acce7ad38df390f2f28b91118c9b2b0 (diff)
Bluetooth: hci_bcm: Handle empty packet after firmware loading
The Broadcom controller on the Raspberry Pi3 sends an empty packet with packet type 0x00 after launching the firmware. This will cause logging of errors. Bluetooth: hci0: Frame reassembly failed (-84) Since this seems to be an intented behaviour of the controller, handle it gracefully by parsing that empty packet with packet type 0x00 and then just simply report it as diagnostic packet. With that change no errors are logging and the packet itself is actually recorded in the Bluetooth monitor traces. < HCI Command: Broadcom Launch RAM (0x3f|0x004e) plen 4 Address: 0xffffffff > HCI Event: Command Complete (0x0e) plen 4 Broadcom Launch RAM (0x3f|0x004e) ncmd 1 Status: Success (0x00) = Vendor Diagnostic (len 0) < HCI Command: Broadcom Update UART Baud Rate (0x3f|0x0018) plen 6 00 00 00 10 0e 00 ...... > HCI Event: Command Complete (0x0e) plen 4 Broadcom Update UART Baud Rate (0x3f|0x0018) ncmd 1 Status: Success (0x00) < HCI Command: Reset (0x03|0x0003) plen 0 > HCI Event: Command Complete (0x0e) plen 4 Reset (0x03|0x0003) ncmd 1 Status: Success (0x00) Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Diffstat (limited to 'drivers/bluetooth')
-rw-r--r--drivers/bluetooth/hci_bcm.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/bluetooth/hci_bcm.c b/drivers/bluetooth/hci_bcm.c
index 34882f18c563..e2540113d0da 100644
--- a/drivers/bluetooth/hci_bcm.c
+++ b/drivers/bluetooth/hci_bcm.c
@@ -44,6 +44,9 @@
#include "btbcm.h"
#include "hci_uart.h"
+#define BCM_NULL_PKT 0x00
+#define BCM_NULL_SIZE 0
+
#define BCM_LM_DIAG_PKT 0x07
#define BCM_LM_DIAG_SIZE 63
@@ -468,11 +471,19 @@ finalize:
.lsize = 0, \
.maxlen = BCM_LM_DIAG_SIZE
+#define BCM_RECV_NULL \
+ .type = BCM_NULL_PKT, \
+ .hlen = BCM_NULL_SIZE, \
+ .loff = 0, \
+ .lsize = 0, \
+ .maxlen = BCM_NULL_SIZE
+
static const struct h4_recv_pkt bcm_recv_pkts[] = {
{ H4_RECV_ACL, .recv = hci_recv_frame },
{ H4_RECV_SCO, .recv = hci_recv_frame },
{ H4_RECV_EVENT, .recv = hci_recv_frame },
{ BCM_RECV_LM_DIAG, .recv = hci_recv_diag },
+ { BCM_RECV_NULL, .recv = hci_recv_diag },
};
static int bcm_recv(struct hci_uart *hu, const void *data, int count)

Privacy Policy