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device_tree: Allow name wildcards in qemu_fdt_node_path()

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Allow name wildcards in qemu_fdt_node_path(). This is useful
to find all nodes with a given compatibility string.

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 20200423121114.4274-2-edgar.iglesias@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Edgar E. Iglesias 2020-04-23 14:11:11 +02:00 committed by Peter Maydell
parent 51c510aa58
commit 80972d3bb2
2 changed files with 4 additions and 1 deletions
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2
device_tree.c
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@ -308,7 +308,7 @@ char **qemu_fdt_node_path(void *fdt, const char *name, char *compat,
offset = len;
break;
}
if (!strcmp(iter_name, name)) {
if (!name || !strcmp(iter_name, name)) {
char *path;
path = g_malloc(path_len);

3
include/sysemu/device_tree.h
View File

@ -39,6 +39,9 @@ void *load_device_tree_from_sysfs(void);
* NULL. If there is no error but no matching node was found, the
* returned array contains a single element equal to NULL. If an error
* was encountered when parsing the blob, the function returns NULL
*
* @name may be NULL to wildcard names and only match compatibility
* strings.
*/
char **qemu_fdt_node_path(void *fdt, const char *name, char *compat,
Error **errp);