linux-kernel - Re: [RFC PATCH] usb: reduce kernel log spam on driver registration

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Message-ID: <CAL_JsqKnmK+FGRCMz=LOCieHwC7xg9dqZVRd=i1chE=9UUuEsA@mail.gmail.com>
Date:   Thu, 25 Aug 2022 14:59:22 -0500
From:   Rob Herring <robh@...nel.org>
To:     Ard Biesheuvel <ardb@...nel.org>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        linux-samsung-soc <linux-samsung-soc@...r.kernel.org>,
        Vladimir Zapolskiy <vz@...ia.com>,
        Tomer Maimon <tmaimon77@...il.com>,
        linux-omap <linux-omap@...r.kernel.org>,
        Avi Fishman <avifishman70@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Linux USB List <linux-usb@...r.kernel.org>,
        Nancy Yuen <yuenn@...gle.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Alan Stern <stern@...land.harvard.edu>,
        Patrice Chotard <patrice.chotard@...s.st.com>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Patrick Venture <venture@...gle.com>,
        Tali Perry <tali.perry1@...il.com>,
        Claudiu Beznea <claudiu.beznea@...rochip.com>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        Benjamin Fair <benjaminfair@...gle.com>
Subject: Re: [RFC PATCH] usb: reduce kernel log spam on driver registration

On Thu, Aug 25, 2022 at 12:04 PM Ard Biesheuvel <ardb@...nel.org> wrote:
>
> Drivers are typically supposed to be quiet unless they are actually
> probed, but for some reason, USB host controllers seem to be exempt from
> this rule, and happily broadcast their existence into the kernel log at
> boot even if the hardware in question is nowhere to be found.
>
> Let's fix that, and remove these pr_info() calls.
>
> Cc: Alan Stern <stern@...land.harvard.edu>
> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Cc: Nicolas Ferre <nicolas.ferre@...rochip.com>
> Cc: Alexandre Belloni <alexandre.belloni@...tlin.com>
> Cc: Claudiu Beznea <claudiu.beznea@...rochip.com>
> Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> Cc: Alim Akhtar <alim.akhtar@...sung.com>
> Cc: Avi Fishman <avifishman70@...il.com>
> Cc: Tomer Maimon <tmaimon77@...il.com>
> Cc: Tali Perry <tali.perry1@...il.com>
> Cc: Patrick Venture <venture@...gle.com>
> Cc: Nancy Yuen <yuenn@...gle.com>
> Cc: Benjamin Fair <benjaminfair@...gle.com>
> Cc: Patrice Chotard <patrice.chotard@...s.st.com>
> Cc: Vladimir Zapolskiy <vz@...ia.com>
> Cc: linux-usb@...r.kernel.org
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: linux-kernel@...r.kernel.org
> Cc: linux-samsung-soc@...r.kernel.org
> Cc: linux-omap@...r.kernel.org
> Signed-off-by: Ard Biesheuvel <ardb@...nel.org>
> ---
>  drivers/usb/host/ehci-atmel.c    | 1 -
>  drivers/usb/host/ehci-exynos.c   | 1 -
>  drivers/usb/host/ehci-fsl.c      | 2 --
>  drivers/usb/host/ehci-hcd.c      | 1 -
>  drivers/usb/host/ehci-npcm7xx.c  | 2 --
>  drivers/usb/host/ehci-omap.c     | 2 --
>  drivers/usb/host/ehci-orion.c    | 2 --
>  drivers/usb/host/ehci-pci.c      | 2 --
>  drivers/usb/host/ehci-platform.c | 2 --
>  drivers/usb/host/ehci-spear.c    | 2 --
>  drivers/usb/host/ehci-st.c       | 2 --
>  drivers/usb/host/fotg210-hcd.c   | 1 -
>  drivers/usb/host/ohci-at91.c     | 1 -
>  drivers/usb/host/ohci-da8xx.c    | 1 -
>  drivers/usb/host/ohci-exynos.c   | 1 -
>  drivers/usb/host/ohci-hcd.c      | 1 -
>  drivers/usb/host/ohci-nxp.c      | 2 --
>  drivers/usb/host/ohci-omap.c     | 2 --
>  drivers/usb/host/ohci-pci.c      | 2 --
>  drivers/usb/host/ohci-platform.c | 2 --
>  drivers/usb/host/ohci-pxa27x.c   | 2 --
>  drivers/usb/host/ohci-s3c2410.c  | 1 -
>  drivers/usb/host/ohci-spear.c    | 2 --
>  drivers/usb/host/ohci-st.c       | 2 --
>  24 files changed, 39 deletions(-)

Reviewed-by: Rob Herring <robh@...nel.org>

I've had the same patch sitting around since 3.15...

Rob