From: Srinivas Kandagatla Date: Wed, 22 Jul 2020 10:06:58 +0000 (+0100) Subject: nvmem: core: add support to auto devid X-Git-Tag: v5.10.7~1954^2~8 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=731aa3fae8137ebca83a01d20fbf3effb4798fc8;p=platform%2Fkernel%2Flinux-rpi.git nvmem: core: add support to auto devid For nvmem providers which have multiple instances, it is required to suffix the provider name with proper id, so that they do not confict for the same name. Currently the core does not handle this case properly eventhough core already has logic to generate the id. This patch add new devid type NVMEM_DEVID_AUTO for providers to be able to allow core to assign id and append it to provier name. Reported-by: Shawn Guo Signed-off-by: Srinivas Kandagatla Tested-by: Shawn Guo Link: https://lore.kernel.org/r/20200722100705.7772-8-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c index d6bacc8..6cd3edb 100644 --- a/drivers/nvmem/core.c +++ b/drivers/nvmem/core.c @@ -635,12 +635,18 @@ struct nvmem_device *nvmem_register(const struct nvmem_config *config) if (!config->no_of_node) nvmem->dev.of_node = config->dev->of_node; - if (config->id == -1 && config->name) { + switch (config->id) { + case NVMEM_DEVID_NONE: dev_set_name(&nvmem->dev, "%s", config->name); - } else { + break; + case NVMEM_DEVID_AUTO: + dev_set_name(&nvmem->dev, "%s%d", config->name, nvmem->id); + break; + default: dev_set_name(&nvmem->dev, "%s%d", config->name ? : "nvmem", config->name ? config->id : nvmem->id); + break; } nvmem->read_only = device_property_present(config->dev, "read-only") || diff --git a/include/linux/nvmem-provider.h b/include/linux/nvmem-provider.h index 6d6f8e5..06409a6c4 100644 --- a/include/linux/nvmem-provider.h +++ b/include/linux/nvmem-provider.h @@ -27,6 +27,9 @@ enum nvmem_type { NVMEM_TYPE_BATTERY_BACKED, }; +#define NVMEM_DEVID_NONE (-1) +#define NVMEM_DEVID_AUTO (-2) + /** * struct nvmem_config - NVMEM device configuration *