linux-kernel - Re: virtio-mmio: Delete an error message in vm_find

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Message-ID: <96031fc7-dced-95bd-fc57-a5fe890638f4@web.de>
Date:   Thu, 9 Apr 2020 08:02:24 +0200
From:   Markus Elfring <Markus.Elfring@....de>
To:     Jason Wang <jasowang@...hat.com>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        virtualization@...ts.linux-foundation.org
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org,
        Andrzej Hajda <a.hajda@...sung.com>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Javier Martinez Canillas <javierm@...hat.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Mark Brown <broonie@...nel.org>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Rob Herring <robh@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        Stephen Boyd <swboyd@...omium.org>,
        Tang Bin <tangbin@...s.chinamobile.com>
Subject: Re: virtio-mmio: Delete an error message in vm_find_vqs()

>> The function “platform_get_irq” can log an error already.
>> Thus omit a redundant message for the exception handling in the
>> calling function.
>
> It looks to me that not all error path of platform_get_irq() were loggd.

How do you think about to clarify the handling of the error code “-EPROBE_DEFER” any more?
https://elixir.bootlin.com/linux/v5.6.3/source/drivers/base/platform.c#L202


> And git grep told me there're other users of platform_get_irq() that check and log by themselves.

Source code analysis can point further update candidates out, can't it?
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/base/platform.c?id=7723f4c5ecdb8d832f049f8483beb0d1081cedf6

Would you like to achieve collateral evolution?

Regards,
Markus