linux-kernel - Re: [PATCH 1/2] mmc: meson-gx: make replace WARN_ONCE with dev_warn

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Message-ID: <CAFBinCCN88nfSnmPoFq4H_ROWFMbq=Kcpr1W6CpNs58XeHtV2w@mail.gmail.com>
Date:   Tue, 27 Apr 2021 20:34:08 +0200
From:   Martin Blumenstingl <martin.blumenstingl@...glemail.com>
To:     Neil Armstrong <narmstrong@...libre.com>
Cc:     ulf.hansson@...aro.org, khilman@...libre.com,
        linux-mmc@...r.kernel.org, linux-amlogic@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Christian Hewitt <christianshewitt@...il.com>
Subject: Re: [PATCH 1/2] mmc: meson-gx: make replace WARN_ONCE with
 dev_warn_once about scatterlist offset alignment

Hi Neil,

On Mon, Apr 26, 2021 at 7:58 PM Neil Armstrong <narmstrong@...libre.com> wrote:
>
> Some drivers like ath10k can sometimg give an sg buffer with an offset whose alignment
sometimg -> sometimes

> is not compatible with the Amlogic DMA descriptor engine requirements.
>
> Simply replace with dev_warn_once() to inform user this should be fixed to avoid
> degraded performance.
>
> This should be ultimately fixed in ath10k, but since it's only a performance issue
> the warning should be removed.
>
> Fixes: 79ed05e329c3 ("mmc: meson-gx: add support for descriptor chain mode")
> Reported-by: Christian Hewitt <christianshewitt@...il.com>
> Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
Acked-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>