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Re: brcmfmac: brcmf_p2p_create_p2pdev: timeout occurred

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On 06/08/15 22:17, Jörg Krause wrote:
On Mo, 2015-06-08 at 18:46 +0200, Arend van Spriel wrote:
On 06/08/15 15:48, Jörg Krause wrote:
Hi Arend,

On Mo, 2015-06-08 at 14:41 +0200, Arend van Spriel wrote:
On 06/08/15 14:35, Jörg Krause wrote:
Hi,

I've trouble creating the p2p interface on a BCM43362 wifi
device
running Linux kernel 4.0.4:

       # dmesg | grep brcmfmac
       [    7.010870] brcmfmac: brcmf_c_preinit_dcmds: Firmware
version =
       wl0: Apr 22 2013 14:50:00 version 5.90.195.89.6 FWID 01
-b30a427d
       [    7.158905] brcmfmac: brcmf_cfg80211_reg_notifier: not
a
ISO3166
       code
       [   11.007164] brcmfmac: brcmf_p2p_create_p2pdev: timeout
occurred

Trying to add the p2p interface manually:

       # iw phy0 interface add p2p0 type __p2pdev
       [  372.042704] brcmfmac: brcmf_link_down: WLC_DISASSOC
failed
(-52)
       [  373.637263] brcmfmac: brcmf_p2p_create_p2pdev: timeout
occurred
       [  373.679377] brcmfmac: brcmf_cfg80211_del_key: invalid
key
index (4)
       [  373.685733] brcmfmac: brcmf_cfg80211_del_key: invalid
key
index (5)

Any idea?

Wondering whether it is similar to what Rafal reported. Can you
do a
hexdump, ie. hexdump -C brcmfmac43362-sdio.bin | tail -30

I managed to set up the p2p interface by recompiling the kernel
with
CONFIG_BRCMDBG and loading the brcmfmac module with p2pon=1.

I had a discussion some month ago with Hante Meulemann about
setting up
the p2p interface. This is one of his replies:

      "For what I can see from the log is that we don’t get the
event from
      the FW indicating that the p2p interface was created. This
probably
      means that there is a bug in this FW for this device. I need
to discuss
      this to see how much priority we can give this. The best
option for you
      for the moment is to use the legacy method with the 'p2pon=1'
command."

Thanks for digging your email archive as we clearly forgot about this

entirely.

Me too :-)

The timeout in your log indeed indicates it is missing a
notification from firmware. I assume your primary interface is in
managed mode when trying to create the p2p_dev interface. Is that
correct?

Correct.

So do you have the following commit in your kernel tree:

commit f48556e1b6a60f1b394a6c4b0a7b8cacba3eb107
Author: Arend van Spriel <arend@xxxxxxxxxxxx>
Date:   Tue Sep 30 10:23:16 2014 +0200

brcmfmac: assure P2P discovery is disabled when setting P2P_DEVICE mac addre

Regards,
Arend

Best regards
Jörg Krause
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