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Date: Fri, 21 Sep 2018 09:29:00 +0200 From: Bartosz Golaszewski <brgl@...ev.pl> To: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>, "David S . Miller" <davem@...emloft.net>, Mauro Carvalho Chehab <mchehab+samsung@...nel.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Andrew Morton <akpm@...ux-foundation.org>, Arnd Bergmann <arnd@...db.de>, Jonathan Corbet <corbet@....net>, Sekhar Nori <nsekhar@...com>, Kevin Hilman <khilman@...nel.org>, David Lechner <david@...hnology.com>, Boris Brezillon <boris.brezillon@...tlin.com>, Andrew Lunn <andrew@...n.ch>, Alban Bedel <albeu@...e.fr>, Maxime Ripard <maxime.ripard@...tlin.com>, Chen-Yu Tsai <wens@...e.org> Cc: linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, Bartosz Golaszewski <bgolaszewski@...libre.com> Subject: [PATCH v5 01/22] nvmem: provide nvmem_dev_name() From: Bartosz Golaszewski <bgolaszewski@...libre.com> Kernel users don't have any means of checking the names of nvmem devices. Add a routine that returns the name of the nvmem provider. This will be useful for future nvmem notifier subscribers - otherwise they can't check what device is being added/removed. Signed-off-by: Bartosz Golaszewski <bgolaszewski@...libre.com> --- drivers/nvmem/core.c | 13 +++++++++++++ include/linux/nvmem-consumer.h | 8 ++++++++ 2 files changed, 21 insertions(+) diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c index 6f064002f439..11afa3b6d551 100644 --- a/drivers/nvmem/core.c +++ b/drivers/nvmem/core.c @@ -1343,6 +1343,19 @@ int nvmem_device_write(struct nvmem_device *nvmem, } EXPORT_SYMBOL_GPL(nvmem_device_write); +/** + * nvmem_dev_name() - Get the name of a given nvmem device. + * + * @nvmem: nvmem device. + * + * Return: name of the nvmem device. + */ +const char *nvmem_dev_name(struct nvmem_device *nvmem) +{ + return dev_name(&nvmem->dev); +} +EXPORT_SYMBOL_GPL(nvmem_dev_name); + static int __init nvmem_init(void) { return bus_register(&nvmem_bus_type); diff --git a/include/linux/nvmem-consumer.h b/include/linux/nvmem-consumer.h index 4e85447f7860..0389fe00b177 100644 --- a/include/linux/nvmem-consumer.h +++ b/include/linux/nvmem-consumer.h @@ -55,6 +55,8 @@ ssize_t nvmem_device_cell_read(struct nvmem_device *nvmem, int nvmem_device_cell_write(struct nvmem_device *nvmem, struct nvmem_cell_info *info, void *buf); +const char *nvmem_dev_name(struct nvmem_device *nvmem); + #else static inline struct nvmem_cell *nvmem_cell_get(struct device *dev, @@ -143,6 +145,12 @@ static inline int nvmem_device_write(struct nvmem_device *nvmem, { return -ENOSYS; } + +static inline const char *nvmem_dev_name(struct nvmem_device *nvmem) +{ + return NULL; +} + #endif /* CONFIG_NVMEM */ #if IS_ENABLED(CONFIG_NVMEM) && IS_ENABLED(CONFIG_OF) -- 2.18.0
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