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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: Dmitry Osipenko <dmitry.osipenko@collabora.com> Signed-off-by: Benjamin Bara <benjamin.bara@skidata.com> Link: https://lore.kernel.org/r/20230327-tegra-pmic-reboot-v7-3-18699d5dcd76@skidata.com Signed-off-by: Lee Jones <lee@kernel.org>
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2 changed files with 6 additions and 0 deletions
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@ -129,11 +129,14 @@ enum sys_off_mode {
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* @cb_data: User's callback data.
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* @cmd: Command string. Currently used only by the sys-off restart mode,
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* NULL otherwise.
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* @dev: Device of the sys-off handler. Only if known (devm_register_*),
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* NULL otherwise.
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*/
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struct sys_off_data {
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int mode;
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void *cb_data;
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const char *cmd;
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struct device *dev;
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};
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struct sys_off_handler *
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@ -55,6 +55,7 @@ struct sys_off_handler {
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enum sys_off_mode mode;
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bool blocking;
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void *list;
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struct device *dev;
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};
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/*
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@ -324,6 +325,7 @@ static int sys_off_notify(struct notifier_block *nb,
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data.cb_data = handler->cb_data;
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data.mode = mode;
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data.cmd = cmd;
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data.dev = handler->dev;
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return handler->sys_off_cb(&data);
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}
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@ -511,6 +513,7 @@ int devm_register_sys_off_handler(struct device *dev,
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handler = register_sys_off_handler(mode, priority, callback, cb_data);
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if (IS_ERR(handler))
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return PTR_ERR(handler);
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handler->dev = dev;
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return devm_add_action_or_reset(dev, devm_unregister_sys_off_handler,
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handler);
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