On December 26, 2019 10:23:41 AM Jean-Philippe Brucker 
[off-list ref] wrote:

Commit 262f2b53f679 ("brcmfmac: call brcmf_attach() just before calling
brcmf_bus_started()") changed the initialization order of the brcmfmac
SDIO driver. Unfortunately since brcmf_sdiod_intr_register() is now
called before the sdiodev->bus_if initialization, it reads the wrong
chip ID and fails to initialize the GPIO on brcm43362. Thus the chip
cannot send interrupts and fails to probe:

[   12.517023] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[   12.531214] ieee80211 phy0: brcmf_bus_started: failed: -110
[   12.536976] ieee80211 phy0: brcmf_attach: dongle is not responding: err=-110
[   12.566467] brcmfmac: brcmf_sdio_firmware_callback: brcmf_attach failed

Initialize the bus interface earlier to ensure that
brcmf_sdiod_intr_register() properly sets up the OOB interrupt.

BugLink: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=908438
Fixes: 262f2b53f679 ("brcmfmac: call brcmf_attach() just before calling 
brcmf_bus_started()")

Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com>

Signed-off-by: Jean-Philippe Brucker <redacted>
---
A workaround [1] disabling the OOB interrupt is being discussed. It
works for me, but this patch fixes the wifi problem on my cubietruck.

I missed that one. Too bad it was not sent to linux-wireless as well. Good 
find here. I did see another patch dealing with the OOB interrupt on Nvidia 
Tegra. Now I wonder if this is the same issue.

Regards,
Arend

[1] 
https://lore.kernel.org/linux-arm-kernel/20180930150927.12076-1-hdegoede@redhat.com/ (local)
---
.../net/wireless/broadcom/brcm80211/brcmfmac/sdio.c  | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)