Commit db2d6038 authored by Benjamin Bara's avatar Benjamin Bara Committed by Lee Jones
Browse files

kernel/reboot: Add device to sys_off_handler 



If the dev is known (e.g. a devm-based sys_off_handler is used), it can
be passed to the handler's callback to have it available there.
Otherwise, cb_data might be set to the dev in most of the cases.

Reviewed-by: default avatarDmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: default avatarBenjamin Bara <benjamin.bara@skidata.com>
Link: https://lore.kernel.org/r/20230327-tegra-pmic-reboot-v7-3-18699d5dcd76@skidata.com


Signed-off-by: default avatarLee Jones <lee@kernel.org>
parent aa49c908

include/linux/reboot.h

+3 −0
Original line number Diff line number Diff line
@@ -129,11 +129,14 @@ enum sys_off_mode { 
 * @cb_data: User's callback data.

 * @cmd: Command string. Currently used only by the sys-off restart mode,

 *       NULL otherwise.

 * @dev: Device of the sys-off handler. Only if known (devm_register_*),

 *       NULL otherwise.

 */

struct sys_off_data {

	int mode;

	void *cb_data;

	const char *cmd;

	struct device *dev;

};



struct sys_off_handler *

kernel/reboot.c

+3 −0
Original line number Diff line number Diff line
@@ -55,6 +55,7 @@ struct sys_off_handler { 
	enum sys_off_mode mode;

	bool blocking;

	void *list;

	struct device *dev;

};



/*
@@ -324,6 +325,7 @@ static int sys_off_notify(struct notifier_block *nb, 
	data.cb_data = handler->cb_data;

	data.mode = mode;

	data.cmd = cmd;

	data.dev = handler->dev;



	return handler->sys_off_cb(&data);

}
@@ -511,6 +513,7 @@ int devm_register_sys_off_handler(struct device *dev, 
	handler = register_sys_off_handler(mode, priority, callback, cb_data);

	if (IS_ERR(handler))

		return PTR_ERR(handler);

	handler->dev = dev;



	return devm_add_action_or_reset(dev, devm_unregister_sys_off_handler,

					handler);