diff options
| author | Eric Auger <eric.auger@linaro.org> | 2016-02-19 09:42:30 -0700 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2016-02-19 09:42:30 -0700 |
| commit | 58e71097ced49600de1b38d2b59a823a9db66f19 (patch) | |
| tree | 54f61c6fb3704a282575d4586710b941d86e94ab /include/sysemu | |
| parent | 78e24f235eda4d3313917a50e135b7e06a046407 (diff) | |
device_tree: qemu_fdt_getprop_cell converted to use the error API
This patch aligns the prototype with qemu_fdt_getprop. The caller
can choose whether the function self-asserts on error (passing
&error_fatal as Error ** argument, corresponding to the legacy behavior),
or behaves differently such as simply output a message.
In this later case the caller can use the new lenp parameter to interpret
the error if any.
Signed-off-by: Eric Auger <eric.auger@linaro.org>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'include/sysemu')
| -rw-r--r-- | include/sysemu/device_tree.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/include/sysemu/device_tree.h b/include/sysemu/device_tree.h index 48bf3b5ab1..705650aad4 100644 --- a/include/sysemu/device_tree.h +++ b/include/sysemu/device_tree.h @@ -67,8 +67,20 @@ int qemu_fdt_setprop_phandle(void *fdt, const char *node_path, const void *qemu_fdt_getprop(void *fdt, const char *node_path, const char *property, int *lenp, Error **errp); +/** + * qemu_fdt_getprop_cell: retrieve the value of a given 4 byte property + * @fdt: pointer to the device tree blob + * @node_path: node path + * @property: name of the property to find + * @lenp: fdt error if any or -EINVAL if the property size is different from + * 4 bytes, or 4 (expected length of the property) upon success. + * @errp: handle to an error object + * + * returns the property value on success + */ uint32_t qemu_fdt_getprop_cell(void *fdt, const char *node_path, - const char *property); + const char *property, int *lenp, + Error **errp); uint32_t qemu_fdt_get_phandle(void *fdt, const char *path); uint32_t qemu_fdt_alloc_phandle(void *fdt); int qemu_fdt_nop_node(void *fdt, const char *node_path); |