Re: [PATCH v2 04/28] bus_find_device: Unify the match callback with class_find_device

From: Rob Herring
Date: Fri Jun 14 2019 - 16:36:23 EST


On Fri, Jun 14, 2019 at 11:54 AM Suzuki K Poulose
<suzuki.poulose@xxxxxxx> 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@xxxxxxxxxxxxxxx>
> Cc: Andrew Lunn <andrew@xxxxxxx>
> Cc: Andreas Noever <andreas.noever@xxxxxxxxx>
> Cc: Arnd Bergmann <arnd@xxxxxxxx>
> Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
> Cc: Corey Minyard <minyard@xxxxxxx>
> Cc: Christian Borntraeger <borntraeger@xxxxxxxxxx>
> Cc: David Kershner <david.kershner@xxxxxxxxxx>
> Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
> Cc: David Airlie <airlied@xxxxxxxx>
> Cc: Felipe Balbi <balbi@xxxxxxxxxx>
> Cc: Frank Rowand <frowand.list@xxxxxxxxx>
> Cc: Grygorii Strashko <grygorii.strashko@xxxxxx>
> Cc: Harald Freudenberger <freude@xxxxxxxxxxxxx>
> Cc: Hartmut Knaack <knaack.h@xxxxxx>
> Cc: Heiko Stuebner <heiko@xxxxxxxxx>
> Cc: Jason Gunthorpe <jgg@xxxxxxxx>
> Cc: Jonathan Cameron <jic23@xxxxxxxxxx>
> Cc: Jonathan Cameron <jic23@xxxxxxxxxx>
> Cc: "James E.J. Bottomley" <jejb@xxxxxxxxxxxxx>
> Cc: Len Brown <lenb@xxxxxxxxxx>
> Cc: Mark Brown <broonie@xxxxxxxxxx>
> Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
> Cc: Michael Jamet <michael.jamet@xxxxxxxxx>
> Cc: "Martin K. Petersen" <martin.petersen@xxxxxxxxxx>
> Cc: Peter Oberparleiter <oberpar@xxxxxxxxxxxxx>
> Cc: Rob Herring <robh+dt@xxxxxxxxxx>
> Cc: Sebastian Ott <sebott@xxxxxxxxxxxxx>
> Cc: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
> Cc: Yehezkel Bernat <YehezkelShB@xxxxxxxxx>
> Cc: Wolfram Sang <wsa@xxxxxxxxxxxxx>
> Cc: rafael@xxxxxxxxxx
> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> Acked-by: Corey Minyard <minyard@xxxxxxx>
> Acked-by: David Kershner <david.kershner@xxxxxxxxxx>
> Acked-by: Mark Brown <broonie@xxxxxxxxxx>
> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
> Acked-by: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
> Signed-off-by: Suzuki K Poulose <suzuki.poulose@xxxxxxx>

Acked-by: Rob Herring <robh@xxxxxxxxxx>