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It primarily uses the device's of_node to read mode- properties. Remove the dependency on struct device and introduce support for firmware node (fwnode) based registration. This enables drivers that are not associated with a struct device to leverage the reboot-mode framework. Signed-off-by: Shivendra Pratap --- drivers/power/reset/reboot-mode.c | 19 ++++++++++++++++--- include/linux/reboot-mode.h | 4 +++- 2 files changed, 19 insertions(+), 4 deletions(-) diff --git a/drivers/power/reset/reboot-mode.c b/drivers/power/reset/reboot= -mode.c index ac4223794083f36960b2bd37a601b7e1f1872de5..eff60d6e04df2cb84ba59d38512= 654336f272f8a 100644 --- a/drivers/power/reset/reboot-mode.c +++ b/drivers/power/reset/reboot-mode.c @@ -8,10 +8,12 @@ #include #include #include +#include #include #include #include #include +#include =20 #define PREFIX "mode-" =20 @@ -67,18 +69,26 @@ static int reboot_mode_notify(struct notifier_block *th= is, /** * reboot_mode_register - register a reboot mode driver * @reboot: reboot mode driver + * @fwnode: Firmware node with reboot-mode configuration * * Returns: 0 on success or a negative error code on failure. */ -int reboot_mode_register(struct reboot_mode_driver *reboot) +int reboot_mode_register(struct reboot_mode_driver *reboot, struct fwnode_= handle *fwnode) { struct mode_info *info; struct mode_info *next; + struct device_node *np; struct property *prop; - struct device_node *np =3D reboot->dev->of_node; size_t len =3D strlen(PREFIX); int ret; =20 + if (!fwnode) + return -EINVAL; + + np =3D to_of_node(fwnode); + if (!np) + return -EINVAL; + INIT_LIST_HEAD(&reboot->head); =20 for_each_property_of_node(np, prop) { @@ -168,11 +178,14 @@ int devm_reboot_mode_register(struct device *dev, struct reboot_mode_driver **dr; int rc; =20 + if (!reboot->dev || !reboot->dev->of_node) + return -EINVAL; + dr =3D devres_alloc(devm_reboot_mode_release, sizeof(*dr), GFP_KERNEL); if (!dr) return -ENOMEM; =20 - rc =3D reboot_mode_register(reboot); + rc =3D reboot_mode_register(reboot, of_fwnode_handle(reboot->dev->of_node= )); if (rc) { devres_free(dr); return rc; diff --git a/include/linux/reboot-mode.h b/include/linux/reboot-mode.h index 4a2abb38d1d612ec0fdf05eb18c98b210f631b7f..22f707ade4ba93592823ea8718d= 467dbfc5ffd7c 100644 --- a/include/linux/reboot-mode.h +++ b/include/linux/reboot-mode.h @@ -2,6 +2,8 @@ #ifndef __REBOOT_MODE_H__ #define __REBOOT_MODE_H__ =20 +#include + struct reboot_mode_driver { struct device *dev; struct list_head head; @@ -9,7 +11,7 @@ struct reboot_mode_driver { struct notifier_block reboot_notifier; }; =20 -int reboot_mode_register(struct reboot_mode_driver *reboot); +int reboot_mode_register(struct reboot_mode_driver *reboot, struct fwnode_= handle *fwnode); int reboot_mode_unregister(struct reboot_mode_driver *reboot); int devm_reboot_mode_register(struct device *dev, struct reboot_mode_driver *reboot); --=20 2.34.1