linux-kernel - Re: [PATCH v3 09/17] mmc: sdhci-msm: Fix error handling for dev_pm_opp_of_add

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Date:   Tue, 5 May 2020 13:33:01 +0200
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Rajendra Nayak <rnayak@...eaurora.org>
Cc:     Viresh Kumar <viresh.kumar@...aro.org>,
        Stephen Boyd <sboyd@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Andy Gross <agross@...nel.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        DTML <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Matthias Kaehlcke <mka@...omium.org>,
        Pradeep P V K <ppvk@...eaurora.org>,
        Veerabhadrarao Badiganti <vbadigan@...eaurora.org>,
        "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>
Subject: Re: [PATCH v3 09/17] mmc: sdhci-msm: Fix error handling for dev_pm_opp_of_add_table()

On Wed, 29 Apr 2020 at 16:09, Rajendra Nayak <rnayak@...eaurora.org> wrote:
>
>
> On 4/28/2020 11:59 PM, Ulf Hansson wrote:
> > On Tue, 28 Apr 2020 at 15:39, Rajendra Nayak <rnayak@...eaurora.org> wrote:
> >>
> >> Even though specifying OPP's in device tree is optional, ignoring all errors
> >> reported by dev_pm_opp_of_add_table() means we can't distinguish between a
> >> missing OPP table and a wrong/buggy OPP table. While missing OPP table
> >> (dev_pm_opp_of_add_table() returns a -ENODEV in such case) can be ignored,
> >> a wrong/buggy OPP table in device tree should make the driver error out.
> >>
> >> while we fix that, lets also fix the variable names for opp/opp_table to
> >> avoid confusion and name them opp_table/has_opp_table instead.
> >>
> >> Suggested-by: Matthias Kaehlcke <matthias@...omium.org>
> >> Signed-off-by: Rajendra Nayak <rnayak@...eaurora.org>
> >> Cc: Ulf Hansson <ulf.hansson@...aro.org>
> >> Cc: Pradeep P V K <ppvk@...eaurora.org>
> >> Cc: Veerabhadrarao Badiganti <vbadigan@...eaurora.org>
> >> Cc: linux-mmc@...r.kernel.org
> >
> > Is this a standalone patch that I queue up via my mmc tree?
>
> Hi Ulf, yes, its a standalone patch which applies on top of the one
> you already have in your tree. No other dependencies.

Thanks for confirming! Perhaps next time you could add this
information as part of a description to the patch (where we usually
add patch version information).

Anyway, applied for next!

[...]

Kind regards
Uffe