[PATCH v4 2/4] ACPI: property: Add acpi_fwnode_name()
From: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Date: 2018-11-27 14:29:05
Also in:
linux-acpi, lkml
Subsystem:
acpi, the rest · Maintainers:
"Rafael J. Wysocki", Linus Torvalds
This implements the get_name fwnode op for ACPI. Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> --- drivers/acpi/property.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+)
diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c
index 8c7c4583b52d..c24cf02e9214 100644
--- a/drivers/acpi/property.c
+++ b/drivers/acpi/property.c@@ -1219,6 +1219,33 @@ acpi_graph_get_remote_endpoint(const struct fwnode_handle *__fwnode) return acpi_graph_get_child_prop_value(fwnode, "endpoint", endpoint_nr); } +static int +acpi_fwnode_get_name(const struct fwnode_handle *fwnode, char *buf, size_t len) +{ + struct acpi_buffer buffer; + acpi_status status; + + if (is_acpi_data_node(fwnode)) { + if (len < strlen(to_acpi_data_node(fwnode)->name) + 1) + return -EOVERFLOW; + sprintf(buf, "%s", to_acpi_data_node(fwnode)->name); + return 0; + } + + if (len < ACPI_NAME_SIZE + 1) + return -EOVERFLOW; + + buffer.length = ACPI_NAME_SIZE + 1; + buffer.pointer = buf; + + status = acpi_get_name(to_acpi_device_node(fwnode)->handle, + ACPI_SINGLE_NAME, &buffer); + if (ACPI_FAILURE(status)) + return -ENXIO; + + return 0; +} + static bool acpi_fwnode_device_is_available(const struct fwnode_handle *fwnode) { if (!is_acpi_device_node(fwnode))
@@ -1310,6 +1337,7 @@ acpi_fwnode_device_get_match_data(const struct fwnode_handle *fwnode, #define DECLARE_ACPI_FWNODE_OPS(ops) \ const struct fwnode_operations ops = { \ + .get_name = acpi_fwnode_get_name, \ .device_is_available = acpi_fwnode_device_is_available, \ .device_get_match_data = acpi_fwnode_device_get_match_data, \ .property_present = acpi_fwnode_property_present, \
--
2.19.2