Am Freitag, 16. Juli 2010, 18:10:36 schrieb Marcel Holtmann: > Hi Oliver, > > > Some devices fail to reset properly at the first attempt to reset > > them under unknown circumstances. Failures can be identified by > > an invalid btaddr. Retry in those cases. > > I am not sure about this. Can you provide some examples when this is > suppose to be happening. The empty BD_ADDR might not be a good indicator > for this. It happens with traces like this: ece2d0c0 1582934618 S Ii:2:003:1 -115:1 16 < ecd717c0 1582934818 S Bi:2:003:2 -115 1028 < f44c0340 1582934828 S Bi:2:003:2 -115 1028 < f44c02c0 1582934851 S Co:2:003:0 s 20 00 0000 0000 0003 3 = 030c00 f44c02c0 1582935005 C Co:2:003:0 0 3 > ece2d0c0 1582938187 C Ii:2:003:1 0:1 6 = 0e040103 0c00 ece2d0c0 1582938194 S Ii:2:003:1 -115:1 16 < ece2d740 1582938207 S Co:2:003:0 s 20 00 0000 0000 0003 3 = 031000 ece2d740 1582938376 C Co:2:003:0 0 3 > ece2d0c0 1582940160 C Ii:2:003:1 0:1 14 = 0e0c0103 1000ffff 8ffe9bff 7987 ece2d0c0 1582940163 S Ii:2:003:1 -115:1 16 < ecd71a40 1582940171 S Co:2:003:0 s 20 00 0000 0000 0003 3 = 011000 ecd71a40 1582940286 C Co:2:003:0 0 3 > ece2d0c0 1582941179 C Ii:2:003:1 0:1 14 = 0e0c0101 100005e1 01050f00 0342 ece2d0c0 1582941186 S Ii:2:003:1 -115:1 16 < ece2d1c0 1582941201 S Co:2:003:0 s 20 00 0000 0000 0003 3 = 051000 ece2d1c0 1582941421 C Co:2:003:0 0 3 > Even a second reset doesn't always help. If it works, ou get traces like this: f37f35c0 3365799877 S Ii:2:003:1 -115:1 16 < ecd76ac0 3365800125 S Bi:2:003:2 -115 1028 < ecd76c40 3365800135 S Bi:2:003:2 -115 1028 < hci_init_req(): ecd76d40 3365800155 S Co:2:003:0 s 20 00 0000 0000 0003 3 = 030c00 ecd76d40 3365800280 C Co:2:003:0 0 3 > HCI_OP_RESET f37f35c0 3365804088 C Ii:2:003:1 0:1 6 = 0e040103 0c00 f37f35c0 3365804097 S Ii:2:003:1 -115:1 16 < ecd76d40 3365804119 S Co:2:003:0 s 20 00 0000 0000 0003 3 = 031000 ecd76d40 3365804276 C Co:2:003:0 0 3 > HCI_OP_READ_LOCAL_FEATURES f37f35c0 3365805026 C Ii:2:003:1 0:1 14 = 0e0c0103 1000ffff 8ffe9bff 7987 f37f35c0 3365805030 S Ii:2:003:1 -115:1 16 < ecd76240 3365805037 S Co:2:003:0 s 20 00 0000 0000 0003 3 = 011000 ecd76240 3365805150 C Co:2:003:0 0 3 > HCI_OP_READ_LOCAL_VERSION f37f35c0 3365806027 C Ii:2:003:1 0:1 14 = 0e0c0101 100005e1 01050f00 0342 f37f35c0 3365806030 S Ii:2:003:1 -115:1 16 < f45703c0 3365806037 S Co:2:003:0 s 20 00 0000 0000 0003 3 = 051000 f45703c0 3365806152 C Co:2:003:0 0 3 > HCI_OP_READ_BUFFER_SIZE - no answer ------------------------------------------------------------------------ ecf40ec0 3395924102 S Co:2:003:0 s 20 00 0000 0000 0003 3 = 030c00 ecf40ec0 3395924297 C Co:2:003:0 0 3 > Again HCI_OP_RESET <presumably from second command> f37f35c0 3395925197 C Ii:2:003:1 0:1 13 = 0e0b0105 1000fd03 40080001 00 Here's the answer to HCI_OP_READ_BUFFER_SIZE f37f35c0 3395925204 S Ii:2:003:1 -115:1 16 < f37f35c0 3395928199 C Ii:2:003:1 0:1 6 = 0e040103 0c00 Answer to the reset f37f35c0 3395928205 S Ii:2:003:1 -115:1 16 < f37f35c0 3395928277 C Ii:2:003:1 -2:1 0 ecd76c40 3395928447 C Bi:2:003:2 -2 0 ecd76ac0 3395928555 C Bi:2:003:2 -2 0 f45709c0 3395928572 S Co:2:002:0 s 23 08 9032 0001 0000 0 ecd76ac0 3395928601 S Ii:2:003:1 -115:1 16 < f45709c0 3395928742 C Co:2:002:0 0 0 ecd76c40 3395928750 S Bi:2:003:2 -115 1028 < f37f35c0 3395928752 S Bi:2:003:2 -115 1028 < >From now on hci_init_req() that works is running: ecd66440 3395928764 S Co:2:003:0 s 20 00 0000 0000 0003 3 = 030c00 ecd66440 3395929102 C Co:2:003:0 0 3 > Here's the reset HCI_OP_RESET ecd76ac0 3395932203 C Ii:2:003:1 0:1 6 = 0e040103 0c00 ecd76ac0 3395932209 S Ii:2:003:1 -115:1 16 < f4578240 3395932223 S Co:2:003:0 s 20 00 0000 0000 0003 3 = 031000 f4578240 3395932406 C Co:2:003:0 0 3 > HCI_OP_READ_LOCAL_FEATURES ecd76ac0 3395933198 C Ii:2:003:1 0:1 14 = 0e0c0103 1000ffff 8ffe9bff 7987 ecd76ac0 3395933204 S Ii:2:003:1 -115:1 16 < ecd66640 3395933215 S Co:2:003:0 s 20 00 0000 0000 0003 3 = 011000 ecd66640 3395933477 C Co:2:003:0 0 3 > HCI_OP_READ_LOCAL_VERSION ecd76ac0 3395934203 C Ii:2:003:1 0:1 14 = 0e0c0101 100005e1 01050f00 0342 ecd76ac0 3395934208 S Ii:2:003:1 -115:1 16 < f4578340 3395934219 S Co:2:003:0 s 20 00 0000 0000 0003 3 = 051000 f4578340 3395934439 C Co:2:003:0 0 3 > HCI_OP_READ_BUFFER_SIZE ecd76ac0 3395936200 C Ii:2:003:1 0:1 13 = 0e0b0105 1000fd03 40080001 00 ecd76ac0 3395936206 S Ii:2:003:1 -115:1 16 < ecf6d7c0 3395936222 S Co:2:003:0 s 20 00 0000 0000 0003 3 = 091000 ecf6d7c0 3395936452 C Co:2:003:0 0 3 > HCI_OP_READ_BD_ADDR ecd76ac0 3395937198 C Ii:2:003:1 0:1 12 = 0e0a0109 10004031 63132700 requested bdaddr Regards Oliver -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
