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| author | Benjamin Bara <benjamin.bara@skidata.com> | 2023-07-15 09:53:25 +0200 |
|---|---|---|
| committer | Lee Jones <lee@kernel.org> | 2023-07-28 11:33:09 +0100 |
| commit | db2d6038c5e795cab4f0a8d3e86b4f7e33338629 (patch) | |
| tree | 6b318ccae04af4045ba2b81632021e9a4b11c1ce | |
| parent | aa49c90894d06e18a1ee7c095edbd2f37c232d02 (diff) | |
| download | lwn-db2d6038c5e795cab4f0a8d3e86b4f7e33338629.tar.gz lwn-db2d6038c5e795cab4f0a8d3e86b4f7e33338629.zip | |
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>
| -rw-r--r-- | include/linux/reboot.h | 3 | ||||
| -rw-r--r-- | kernel/reboot.c | 3 |
2 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/reboot.h b/include/linux/reboot.h index 2b6bb593be5b..c4cc3b89ced1 100644 --- a/include/linux/reboot.h +++ b/include/linux/reboot.h @@ -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 * diff --git a/kernel/reboot.c b/kernel/reboot.c index 6ebef11c8876..395a0ea3c7a8 100644 --- a/kernel/reboot.c +++ b/kernel/reboot.c @@ -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); |