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* Ath10k reboot regression with v5.7-rc1 on dragonboard 845c
@ 2020-04-29 16:20 Amit Pundir
  2020-04-30  4:15 ` Govind Singh
  0 siblings, 1 reply; 6+ messages in thread
From: Amit Pundir @ 2020-04-29 16:20 UTC (permalink / raw)
  To: ath10k; +Cc: Bjorn Andersson, John Stultz, Manivannan Sadhasivam

Hi,

I see a reboot regression with v5.7-rc1 on Dragonboard 845c
(wcn3990/ath10k_snoc) running AOSP. "reboot" or "reboot bootloader"
commands do not work as expected when the board is connected to WiFi
AP. I see "ath10k_snoc 18800000.wifi: firmware crashed"... dump in
dmesg and board reboots into usb debug/crash mode. I do not see this
reboot regression when the board is not connected to WiFi.

It started with qrtr-ns migration from userspace to kernel which
landed in v5.7-rc1. I didn't run into this reboot issue when I was
running qrtr-ns userspace tool. According to Mani, in-kernel qrtr-ns
just live long enough to catch modem shutdown requests and advertise
it to the modem, unlike the userspace tool. Which seem to be the case
here. I further narrowed it down to ath10k_qmi_remove_msa_permission()
call in ath10k shutdown path. If I comment out that function call then
the reboot command works as expected.

Any thoughts as to what might be going wrong? I do not understand
qrtr/ath10k/qmi to see how msa permissions are getting mapped-unmapped
here. I'd be happy to help debug things.

Regards,
Amit Pundir

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^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2020-05-21 15:00 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2020-04-29 16:20 Ath10k reboot regression with v5.7-rc1 on dragonboard 845c Amit Pundir
2020-04-30  4:15 ` Govind Singh
2020-04-30  5:39   ` Manivannan Sadhasivam
2020-04-30  6:56     ` Rakesh Pillai
     [not found]       ` <DM5PR02MB3893EABAD0ABCCB5F6374DAC9CAA0@DM5PR02MB3893.namprd02.prod.outlook.com>
2020-04-30 12:29         ` govinds
2020-05-21 14:59           ` Amit Pundir

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