diff options
Diffstat (limited to 'drivers/of/base.c')
| -rw-r--r-- | drivers/of/base.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/drivers/of/base.c b/drivers/of/base.c index 7f1720af813c..166fb7d75337 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -1021,19 +1021,23 @@ struct device_node *of_find_matching_node_and_match(struct device_node *from, EXPORT_SYMBOL(of_find_matching_node_and_match); /** - * of_modalias_node - Lookup appropriate modalias for a device node + * of_alias_from_compatible - Lookup appropriate alias for a device node + * depending on compatible * @node: pointer to a device tree node - * @modalias: Pointer to buffer that modalias value will be copied into - * @len: Length of modalias value + * @alias: Pointer to buffer that alias value will be copied into + * @len: Length of alias value * * Based on the value of the compatible property, this routine will attempt - * to choose an appropriate modalias value for a particular device tree node. + * to choose an appropriate alias value for a particular device tree node. * It does this by stripping the manufacturer prefix (as delimited by a ',') * from the first entry in the compatible list property. * + * Note: The matching on just the "product" side of the compatible is a relic + * from I2C and SPI. Please do not add any new user. + * * Return: This routine returns 0 on success, <0 on failure. */ -int of_modalias_node(struct device_node *node, char *modalias, int len) +int of_alias_from_compatible(const struct device_node *node, char *alias, int len) { const char *compatible, *p; int cplen; @@ -1042,10 +1046,10 @@ int of_modalias_node(struct device_node *node, char *modalias, int len) if (!compatible || strlen(compatible) > cplen) return -ENODEV; p = strchr(compatible, ','); - strscpy(modalias, p ? p + 1 : compatible, len); + strscpy(alias, p ? p + 1 : compatible, len); return 0; } -EXPORT_SYMBOL_GPL(of_modalias_node); +EXPORT_SYMBOL_GPL(of_alias_from_compatible); /** * of_find_node_by_phandle - Find a node given a phandle |