On Tue, 24 Dec 2024 21:05:03 +0800
Zijun Hu <zijun_hu@xxxxxxxxxx> wrote:
> From: Zijun Hu <quic_zijuhu@xxxxxxxxxxx>
>
> 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.
>
> BTW, various subsystem changes are squashed into this commit to meet
> 'git bisect' requirement, and this commit has the minimal and simplest
> changes to complement squashing shortcoming, and that may bring extra
> code improvement.
>
> Reviewed-by: Alison Schofield <alison.schofield@xxxxxxxxx>
> Reviewed-by: Takashi Sakamoto <o-takashi@xxxxxxxxxxxxx>
> Acked-by: Uwe Kleine-König <ukleinek@xxxxxxxxxx> # for drivers/pwm
> Signed-off-by: Zijun Hu <quic_zijuhu@xxxxxxxxxxx>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
[Index of Archives]
[Pulseaudio]
[Linux Audio Users]
[ALSA Devel]
[Fedora Desktop]
[Fedora SELinux]
[Big List of Linux Books]
[Yosemite News]
[KDE Users]