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Date:   Fri, 14 Jun 2019 14:30:31 -0600
From:   Rob Herring <robh+dt@...nel.org>
To:     Suzuki K Poulose <suzuki.poulose@....com>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Andrew Lunn <andrew@...n.ch>,
        Andreas Noever <andreas.noever@...il.com>,
        Arnd Bergmann <arnd@...db.de>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Corey Minyard <minyard@....org>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        David Kershner <david.kershner@...sys.com>,
        "David S. Miller" <davem@...emloft.net>,
        David Airlie <airlied@...ux.ie>,
        Felipe Balbi <balbi@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        Grygorii Strashko <grygorii.strashko@...com>,
        Harald Freudenberger <freude@...ux.ibm.com>,
        Hartmut Knaack <knaack.h@....de>,
        Heiko Stuebner <heiko@...ech.de>,
        Jason Gunthorpe <jgg@...pe.ca>,
        Jonathan Cameron <jic23@...nel.org>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        Len Brown <lenb@...nel.org>, Mark Brown <broonie@...nel.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Michael Jamet <michael.jamet@...el.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Peter Oberparleiter <oberpar@...ux.ibm.com>,
        Sebastian Ott <sebott@...ux.ibm.com>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Yehezkel Bernat <YehezkelShB@...il.com>,
        Wolfram Sang <wsa@...-dreams.de>
Subject: Re: [PATCH v2 04/28] bus_find_device: Unify the match callback with class_find_device

On Fri, Jun 14, 2019 at 11:54 AM Suzuki K Poulose
<suzuki.poulose@....com> wrote:
>
> There is an arbitrary difference between the prototypes of
> bus_find_device() and class_find_device() preventing their callers
> from passing the same pair of data and match() arguments to both of
> them, which is the const qualifier used in the prototype of
> class_find_device().  If that qualifier is also used in the
> bus_find_device() prototype, it will be possible to pass the same
> match() callback function to both bus_find_device() and
> class_find_device(), which will allow some optimizations to be made in
> order to avoid code duplication going forward.  Also with that, constify
> the "data" parameter as it is passed as a const to the match function.
>
> For this reason, change the prototype of bus_find_device() to match
> the prototype of class_find_device() and adjust its callers to use the
> const qualifier in accordance with the new prototype of it.
>
> Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
> Cc: Andrew Lunn <andrew@...n.ch>
> Cc: Andreas Noever <andreas.noever@...il.com>
> Cc: Arnd Bergmann <arnd@...db.de>
> Cc: Bjorn Helgaas <bhelgaas@...gle.com>
> Cc: Corey Minyard <minyard@....org>
> Cc: Christian Borntraeger <borntraeger@...ibm.com>
> Cc: David Kershner <david.kershner@...sys.com>
> Cc: "David S. Miller" <davem@...emloft.net>
> Cc: David Airlie <airlied@...ux.ie>
> Cc: Felipe Balbi <balbi@...nel.org>
> Cc: Frank Rowand <frowand.list@...il.com>
> Cc: Grygorii Strashko <grygorii.strashko@...com>
> Cc: Harald Freudenberger <freude@...ux.ibm.com>
> Cc: Hartmut Knaack <knaack.h@....de>
> Cc: Heiko Stuebner <heiko@...ech.de>
> Cc: Jason Gunthorpe <jgg@...pe.ca>
> Cc: Jonathan Cameron <jic23@...nel.org>
> Cc: Jonathan Cameron <jic23@...nel.org>
> Cc: "James E.J. Bottomley" <jejb@...ux.ibm.com>
> Cc: Len Brown <lenb@...nel.org>
> Cc: Mark Brown <broonie@...nel.org>
> Cc: Michael Ellerman <mpe@...erman.id.au>
> Cc: Michael Jamet <michael.jamet@...el.com>
> Cc: "Martin K. Petersen" <martin.petersen@...cle.com>
> Cc: Peter Oberparleiter <oberpar@...ux.ibm.com>
> Cc: Rob Herring <robh+dt@...nel.org>
> Cc: Sebastian Ott <sebott@...ux.ibm.com>
> Cc: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
> Cc: Yehezkel Bernat <YehezkelShB@...il.com>
> Cc: Wolfram Sang <wsa@...-dreams.de>
> Cc: rafael@...nel.org
> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Acked-by: Corey Minyard <minyard@....org>
> Acked-by: David Kershner <david.kershner@...sys.com>
> Acked-by: Mark Brown <broonie@...nel.org>
> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> Acked-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
> Signed-off-by: Suzuki K Poulose <suzuki.poulose@....com>

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

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