https://bugzilla.kernel.org/show_bug.cgi?id=58481 Summary: [pandaboard] btwilink - st_register failed -22 Product: Drivers Version: 2.5 Kernel Version: 3.9.2 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Bluetooth AssignedTo: linux-bluetooth@xxxxxxxxxxxxxxx ReportedBy: liquid.acid@xxxxxxx Regression: No Hello, I was trying to get bluetooth running on a Pandaboard ES. I turns out that the board does some multiplexing to access WiFi/BT/FM on the same chip, or something. The correct module for the chip seems to be btwilink, but it needs a userspace application to run (uim from http://gitorious.org/uim/uim). Relevant dmesg output: [ 5726.790222] (stc): chnl_id list empty :4 [ 5726.794403] (stk) : st_kim_start [ 5726.936126] (stk) :ldisc_install = 1 [ 5727.936859] (stk) :ldisc installation timeout [ 5727.941497] (stk) :ldisc_install = 0 [ 5728.936859] (stk) : timed out waiting for ldisc to be un-installed [ 5729.084136] (stk) :ldisc_install = 1 [ 5730.076843] (stk) :ldisc installation timeout [ 5730.081451] (stk) :ldisc_install = 0 [ 5731.076843] (stk) : timed out waiting for ldisc to be un-installed [ 5731.224487] (stk) :ldisc_install = 1 [ 5732.216888] (stk) :ldisc installation timeout [ 5732.221496] (stk) :ldisc_install = 0 [ 5733.216857] (stk) : timed out waiting for ldisc to be un-installed [ 5733.364471] (stk) :ldisc_install = 1 [ 5734.356872] (stk) :ldisc installation timeout [ 5734.361480] (stk) :ldisc_install = 0 [ 5735.356872] (stk) : timed out waiting for ldisc to be un-installed [ 5735.504425] (stk) :ldisc_install = 1 [ 5736.496856] (stk) :ldisc installation timeout [ 5736.501464] (stk) :ldisc_install = 0 [ 5737.496887] (stk) : timed out waiting for ldisc to be un-installed [ 5737.644470] (stk) :ldisc_install = 1 [ 5738.636840] (stk) :ldisc installation timeout [ 5738.641479] (stk) :ldisc_install = 0 [ 5739.636871] (stk) : timed out waiting for ldisc to be un-installed [ 5739.646026] Bluetooth: st_register failed -22 This is the output generated from inserting btwilink. Before insertion, I double-checked that uim was running. This is the uim output: uim:@ main uim:begin polling... uim:poll broke due to event 10(PRI:2/ERR:8) uim:read 1 from install uim:@ st_uart_config uim: signal received, opening /dev/ttyO1 uim:@ set_baud_rate uim:set_baud_rate() done uim:Setting speed to 3000000 uim:@ read_command_complete uim: Command complete started uim:@ read_hci_event uim: read_hci_event uim:Invalid response -------------------------------------------- So, what seems to happen is the following: In st_kim_start from drivers/misc/ti-st/st_kim.c, the module notifies uim through sysfs to take action. uim then fires up st_uart_config (in uim.c) which eventually tries to increase the baud rate. For this it sends a speed-set command. It fails when it gets an invalid response. Greets, Tobias -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. -- 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
