linux-kernel - Re: [PATCH v2 03/28] acpi: utils: Cleanup acpi_dev_match

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Message-ID: <20190624032007.GA23457@kroah.com>
Date:   Mon, 24 Jun 2019 05:20:07 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     "Rafael J. Wysocki" <rafael@...nel.org>
Cc:     Suzuki K Poulose <suzuki.poulose@....com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Len Brown <lenb@...nel.org>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>
Subject: Re: [PATCH v2 03/28] acpi: utils: Cleanup acpi_dev_match_cb

On Tue, Jun 18, 2019 at 12:08:45AM +0200, Rafael J. Wysocki wrote:
> On Fri, Jun 14, 2019 at 7:54 PM Suzuki K Poulose <suzuki.poulose@....com> wrote:
> >
> > The prototype of bus_find_device() will be unified with that of
> > class_find_device() subsequently, but for this purpose the callback
> > functions passed to it need to take (const void *) as the second
> > argument.  Consequently, they cannot modify the memory pointed to by
> > that argument which currently is not the case for acpi_dev_match_cb().
> > However, acpi_dev_match_cb() really need not modify the "match" object
> > passed to it, because acpi_dev_get_first_match_dev() which uses it via
> > bus_find_device() can easily convert the result of bus_find_device()
> > into the pointer to return.
> >
> > For this reason, update acpi_dev_match_cb() to avoid the redundant
> > memory updates.
> >
> > Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> > Cc: "Rafael J. Wysocki" <rafael@...nel.org>
> > Cc: Len Brown <lenb@...nel.org>
> > Cc: linux-acpi@...r.kernel.org
> > Signed-off-by: Suzuki K Poulose <suzuki.poulose@....com>
> 
> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> 
> Or if you want me to take this patch, please let me know.

I'll take it now, thanks.

greg k-h