linux-kernel - Re: [RESEND PATCH v5 1/5] driver core: add probe

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Message-ID: <20200624152808.GI5472@sirena.org.uk>
Date:   Wed, 24 Jun 2020 16:28:08 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Robin Murphy <robin.murphy@....com>
Cc:     Andy Shevchenko <andy.shevchenko@...il.com>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "open list:DRM DRIVERS" <dri-devel@...ts.freedesktop.org>,
        Russell King - ARM Linux <linux@...linux.org.uk>,
        Neil Armstrong <narmstrong@...libre.com>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Jonas Karlman <jonas@...boo.se>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Daniel Vetter <daniel@...ll.ch>,
        linux-arm Mailing List <linux-arm-kernel@...ts.infradead.org>,
        Marek Szyprowski <m.szyprowski@...sung.com>
Subject: Re: [RESEND PATCH v5 1/5] driver core: add probe_err log helper

On Wed, Jun 24, 2020 at 04:00:34PM +0100, Robin Murphy wrote:

> Be thankful... And count me in as one of those miserable users; here's one
> of mine being bad enough without even printing any specific messages about
> deferring ;)

> [robin@...sel-cheese ~]$ dmesg | grep dwmmc
> [    3.046297] dwmmc_rockchip ff0c0000.mmc: IDMAC supports 32-bit address mode.
> [    3.054312] dwmmc_rockchip ff0c0000.mmc: Using internal DMA controller.
> [    3.061774] dwmmc_rockchip ff0c0000.mmc: Version ID is 270a
> [    3.068101] dwmmc_rockchip ff0c0000.mmc: DW MMC controller at irq 30,32 bit host data width,256 deep fifo

Looking at that driver it's going to have lots of problems whatever
happens - it's printing out a huge amount of stuff before it's finished
acquiring resources.

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