linux-kernel - Re: [PATCH v3 04/11] driver core: Constify API device_find

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20241206135209.GA133715@workstation.local>
Date: Fri, 6 Dec 2024 22:52:09 +0900
From: Takashi Sakamoto <o-takashi@...amocchi.jp>
To: Zijun Hu <zijun_hu@...oud.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Uwe Kleine-König <ukleinek@...nel.org>,
	James Bottomley <James.Bottomley@...senpartnership.com>,
	Thomas Weißschuh <thomas@...ch.de>,
	linux-kernel@...r.kernel.org, nvdimm@...ts.linux.dev,
	linux-sound@...r.kernel.org, sparclinux@...r.kernel.org,
	linux-block@...r.kernel.org, linux-cxl@...r.kernel.org,
	linux1394-devel@...ts.sourceforge.net, arm-scmi@...r.kernel.org,
	linux-efi@...r.kernel.org, linux-gpio@...r.kernel.org,
	dri-devel@...ts.freedesktop.org, linux-mediatek@...ts.infradead.org,
	linux-hwmon@...r.kernel.org, linux-media@...r.kernel.org,
	linux-pwm@...r.kernel.org, linux-remoteproc@...r.kernel.org,
	linux-scsi@...r.kernel.org, open-iscsi@...glegroups.com,
	linux-usb@...r.kernel.org, linux-serial@...r.kernel.org,
	netdev@...r.kernel.org, Zijun Hu <quic_zijuhu@...cinc.com>
Subject: Re: [PATCH v3 04/11] driver core: Constify API device_find_child()
 then adapt for various usages

Hi,

On Thu, Dec 05, 2024 at 08:10:13AM +0800, Zijun Hu wrote:
> From: Zijun Hu <quic_zijuhu@...cinc.com>
> 
> Constify the following API:
> struct device *device_find_child(struct device *dev, void *data,
> 		int (*match)(struct device *dev, void *data));
> To :
> struct device *device_find_child(struct device *dev, const void *data,
>                                  device_match_t match);
> typedef int (*device_match_t)(struct device *dev, const void *data);
> with the following reasons:
> 
> - Protect caller's match data @*data which is for comparison and lookup
>   and the API does not actually need to modify @*data.
> 
> - Make the API's parameters (@match)() and @data have the same type as
>   all of other device finding APIs (bus|class|driver)_find_device().
> 
> - All kinds of existing device match functions can be directly taken
>   as the API's argument, they were exported by driver core.
> 
> Constify the API and adapt for various existing usages by simply making
> various match functions take 'const void *' as type of match data @data.
> 
> Signed-off-by: Zijun Hu <quic_zijuhu@...cinc.com>
> ---
>  arch/sparc/kernel/vio.c                |  6 +++---
>  drivers/base/core.c                    |  6 +++---
>  drivers/block/sunvdc.c                 |  6 +++---
>  drivers/bus/fsl-mc/dprc-driver.c       |  4 ++--
>  drivers/cxl/core/pci.c                 |  4 ++--
>  drivers/cxl/core/pmem.c                |  2 +-
>  drivers/cxl/core/region.c              | 21 ++++++++++++---------
>  drivers/firewire/core-device.c         |  4 ++--
>  drivers/firmware/arm_scmi/bus.c        |  4 ++--
>  drivers/firmware/efi/dev-path-parser.c |  4 ++--
>  drivers/gpio/gpio-sim.c                |  2 +-
>  drivers/gpu/drm/mediatek/mtk_drm_drv.c |  2 +-
>  drivers/hwmon/hwmon.c                  |  2 +-
>  drivers/media/pci/mgb4/mgb4_core.c     |  4 ++--
>  drivers/nvdimm/bus.c                   |  2 +-
>  drivers/pwm/core.c                     |  2 +-
>  drivers/rpmsg/rpmsg_core.c             |  4 ++--
>  drivers/scsi/qla4xxx/ql4_os.c          |  3 ++-
>  drivers/scsi/scsi_transport_iscsi.c    | 10 +++++-----
>  drivers/slimbus/core.c                 |  8 ++++----
>  drivers/thunderbolt/retimer.c          |  2 +-
>  drivers/thunderbolt/xdomain.c          |  2 +-
>  drivers/tty/serial/serial_core.c       |  4 ++--
>  drivers/usb/typec/class.c              |  8 ++++----
>  include/linux/device.h                 |  4 ++--
>  include/scsi/scsi_transport_iscsi.h    |  4 ++--
>  net/dsa/dsa.c                          |  2 +-
>  tools/testing/cxl/test/cxl.c           |  2 +-
>  28 files changed, 66 insertions(+), 62 deletions(-)

For the changes in FireWire subsystem:

Reviewed-by: Takashi Sakamoto <o-takashi@...amocchi.jp>


Thanks

Takashi Sakamoto