Hi Amit, Seems del_server is being notified early due to qrtr-ns migration from userspace to kernel prior remote(modem + wifi) actually went down. As per of del_server we are removing the MSA permission via SCM call, but remote(wifi user pd in modem Q6) is still accessing the region.
BR, Govind -----Original Message----- From: ath10k <ath10k-boun...@lists.infradead.org> On Behalf Of Amit Pundir Sent: Wednesday, April 29, 2020 9:51 PM To: ath10k@lists.infradead.org Cc: bjorn.anders...@linaro.org; John Stultz <john.stu...@linaro.org>; manivannan.sadhasi...@linaro.org Subject: [EXT] Ath10k reboot regression with v5.7-rc1 on dragonboard 845c 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 _______________________________________________ ath10k mailing list ath10k@lists.infradead.org http://lists.infradead.org/mailman/listinfo/ath10k _______________________________________________ ath10k mailing list ath10k@lists.infradead.org http://lists.infradead.org/mailman/listinfo/ath10k
