linux-kernel - Re: [PATCH v2 12/35] brcmfmac: pcie: Fix crashes due to early IRQs

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Date:   Mon, 10 Jan 2022 15:54:54 +0200
From:   Kalle Valo <kvalo@...nel.org>
To:     Hector Martin <marcan@...can.st>
Cc:     Andy Shevchenko <andy.shevchenko@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>,
        Arend van Spriel <aspriel@...il.com>,
        Franky Lin <franky.lin@...adcom.com>,
        Hante Meuleman <hante.meuleman@...adcom.com>,
        Chi-hsien Lin <chi-hsien.lin@...ineon.com>,
        Wright Feng <wright.feng@...ineon.com>,
        Dmitry Osipenko <digetx@...il.com>,
        Sven Peter <sven@...npeter.dev>,
        Alyssa Rosenzweig <alyssa@...enzweig.io>,
        Mark Kettenis <kettenis@...nbsd.org>,
        Rafał Miłecki <zajec5@...il.com>,
        Pieter-Paul Giesberts <pieter-paul.giesberts@...adcom.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Hans de Goede <hdegoede@...hat.com>,
        "John W. Linville" <linville@...driver.com>,
        "brian m. carlson" <sandals@...stytoothpaste.net>,
        "open list\:TI WILINK WIRELES..." <linux-wireless@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        "open list\:BROADCOM BRCM80211 IEEE802.11n WIRELESS DRIVER" 
        <brcm80211-dev-list.pdl@...adcom.com>,
        SHA-cyfmac-dev-list@...ineon.com
Subject: Re: [PATCH v2 12/35] brcmfmac: pcie: Fix crashes due to early IRQs

Hector Martin <marcan@...can.st> writes:

> On 04/01/2022 23.12, Andy Shevchenko wrote:
>> On Tue, Jan 4, 2022 at 9:29 AM Hector Martin <marcan@...can.st> wrote:
>>>
>>> The driver was enabling IRQs before the message processing was
>>> initialized. This could cause IRQs to come in too early and crash the
>>> driver. Instead, move the IRQ enable and hostready to a bus preinit
>>> function, at which point everything is properly initialized.
>>>
>>> Fixes: 9e37f045d5e7 ("brcmfmac: Adding PCIe bus layer support.")
>> 
>> You should gather fixes at the beginning of the series, and even
>> possible to send them as a separate series. In the current state it's
>> unclear if there are dependencies on your new feature (must not be for
>> fixes that meant to be backported).
>> 
>
> Thanks, I wasn't sure what order you wanted those in. I'll put them at
> the top for v3. I think none of those should have any dependencies on
> the rest of the patches, modulo some trivial rebase wrangling.

If there are no dependencies, please send the brcmfmac fixes separately
so that I can apply them earlier.

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