Return-path: Received: from mail-wi0-f180.google.com ([209.85.212.180]:34461 "EHLO mail-wi0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751842AbbG1LA3 convert rfc822-to-8bit (ORCPT ); Tue, 28 Jul 2015 07:00:29 -0400 Received: by wibud3 with SMTP id ud3so175464883wib.1 for ; Tue, 28 Jul 2015 04:00:27 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: References: Date: Tue, 28 Jul 2015 13:00:27 +0200 Message-ID: (sfid-20150728_130042_033762_84A093AE) Subject: Re: QCA6174 hw2.1 irq_mode=0 broken on 4.2-rc3, working on 4.1.2 From: Enrico Tagliavini To: Michal Kazior Cc: "ath10k@lists.infradead.org" , linux-wireless Content-Type: text/plain; charset=UTF-8 Sender: linux-wireless-owner@vger.kernel.org List-ID: Hi Michal, this is the dmesg output from a boot with kernel 4.1.2 with patch to make the firmware load [1] Jul 26 10:07:42 alientux.saurisiamonoi.org kernel: ath10k_pci 0000:03:00.0: enabling device (0000 -> 0002) Jul 26 10:07:42 alientux.saurisiamonoi.org kernel: ath10k_pci 0000:03:00.0: pci irq msi-x interrupts 8 irq_mode 0 reset_mode 0 Jul 26 10:07:42 alientux.saurisiamonoi.org kernel: ath10k_pci 0000:03:00.0: Direct firmware load for ath10k/cal-pci-0000:03:00.0.bin failed with error -2 Jul 26 10:07:44 alientux.saurisiamonoi.org kernel: ath10k_pci 0000:03:00.0: qca6174 hw2.1 (0x05010000, 0x003405ff) fw killer-n1525-fw api 4 htt 3.0 wmi 4 cal otp max_sta 32 Jul 26 10:07:44 alientux.saurisiamonoi.org kernel: ath10k_pci 0000:03:00.0: debug 0 debugfs 1 tracing 0 dfs 0 testmode 0 Jul 26 10:07:44 alientux.saurisiamonoi.org kernel: ath10k_pci 0000:03:00.0 wlp3s0: renamed from wlan0 I saw the report you mentioned (I'm subscribed to ath10k and try to keep it up with it). Not being expert at all I was not sure it was the same or not. Also there seems to be a difference that with irq_mode=1 for me it just works like before. [1] https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/drivers/net/wireless/ath/ath10k/pci.c?id=11a002efbaa7fbd9f6e616695ab42aa9f1caf060 On 28 July 2015 at 06:31, Michal Kazior wrote: > On 27 July 2015 at 22:08, Enrico Tagliavini wrote: >> Hello there, >> >> I gave 4.2 rc3 a shot and I discovered the wireless was not working >> anymore with it. I tried adding irq_mode=1 alongside skip_otp=y in >> ath10k_core (I assume you need fw api 5 to remove this, is that >> correct?, I still have fw 4 only). >> >> Loading with irq_mode=0 >> >> [ 21.130224] ath10k_pci 0000:03:00.0: enabling device (0000 -> 0002) >> [ 21.130734] ath10k_pci 0000:03:00.0: pci irq msi-x interrupts 8 >> irq_mode 0 reset_mode 0 > > There was already a similar report[1]. Just for the record: what > number of interrupts did you have before 4.2-rc3? I assume it was "pci > irq msi interrupts 1 irq_mode 0 reset_mode 0". > > My suspicion is that either the firmware is buggy and doesn't play > well with multiple MSI interrupts or the MSI interrupt behaviour > changed significantly (compared to qca988x) and this remained hidden > because not an awful lot of machines seemed to have provided more than > 1 msi interrupt for ath10k. > > [1]: http://lists.infradead.org/pipermail/ath10k/2015-July/005695.html > > > Michał