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Signed-off-by: Viresh Kumar --- drivers/firmware/arm_ffa/bus.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/drivers/firmware/arm_ffa/bus.c b/drivers/firmware/arm_ffa/bus.c index dea3eb741d95..ca526e438e71 100644 --- a/drivers/firmware/arm_ffa/bus.c +++ b/drivers/firmware/arm_ffa/bus.c @@ -7,6 +7,8 @@ #include #include +#include +#include #include #include #include @@ -187,6 +189,32 @@ bool ffa_device_is_valid(struct ffa_device *ffa_dev) return valid; } +static void ffa_device_of_setup(struct ffa_device *ffa_dev) +{ + struct device_node *np; + uuid_t uuid; + u32 val; + + /* vm-id and UUID must match */ + for_each_compatible_node(np, NULL, "arm,ffa") { + if (of_property_read_u32(np, "vm-id", &val)) + continue; + + if (ffa_dev->vm_id != val) + continue; + + if (of_property_read_u32_array(np, "uuid", (u32 *)&uuid, + sizeof(uuid) / sizeof(u32))) + continue; + + if (!uuid_equal(&ffa_dev->uuid, &uuid)) + continue; + + device_set_node(&ffa_dev->dev, of_fwnode_handle(np)); + break; + } +} + struct ffa_device * ffa_device_register(const struct ffa_partition_info *part_info, const struct ffa_ops *ops) @@ -222,6 +250,8 @@ ffa_device_register(const struct ffa_partition_info *part_info, import_uuid(&uuid, (u8 *)part_info->uuid); uuid_copy(&ffa_dev->uuid, &uuid); + ffa_device_of_setup(ffa_dev); + ret = device_register(&ffa_dev->dev); if (ret) { dev_err(dev, "unable to register device %s err=%d\n", -- 2.31.1.272.g89b43f80a514