[03/26] nvmem: provide nvmem_dev_name()

Message ID	20180921134026.4596-4-srinivas.kandagatla@linaro.org
State	New
Headers	show Delivered-To: patch@linaro.org Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; From: srinivas.kandagatla@linaro.org To: gregkh@linuxfoundation.org Cc: linux-kernel@vger.kernel.org, Bartosz Golaszewski <bgolaszewski@baylibre.com>, Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Subject: [PATCH 03/26] nvmem: provide nvmem_dev_name() Date: Fri, 21 Sep 2018 06:40:03 -0700 Message-Id: <20180921134026.4596-4-srinivas.kandagatla@linaro.org> In-Reply-To: <20180921134026.4596-1-srinivas.kandagatla@linaro.org> References: <20180921134026.4596-1-srinivas.kandagatla@linaro.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk
Series	nvmem: patches for 4.20 \| expand [00/26] nvmem: patches for 4.20 [01/26] eeprom: eeprom_93xx46: use resource management [02/26] eeprom: at25: use devm_nvmem_register() [03/26] nvmem: provide nvmem_dev_name() [04/26] nvmem: remove the name field from struct nvmem_device [05/26] nvmem: use list_for_each_entry_safe in nvmem_device_remove_all_cells() [06/26] nvmem: remove a stray newline [07/26] nvmem: check the return value of nvmem_add_cells() [08/26] nvmem: use kref [09/26] nvmem: sunxi_sid: return -ENOMEM if kzalloc() fails [10/26] nvmem: sunxi_sid: use devm_nvmem_register() [11/26] nvmem: lpc18xx_eeprom: use devm_nvmem_register() [12/26] nvmem: mxs-ocotp: use devm_nvmem_register() [13/26] nvmem: change the signature of nvmem_unregister() [14/26] nvmem: remove the global cell list [15/26] nvmem: add support for cell info [16/26] nvmem: resolve cells from DT at registration time [17/26] nvmem: add support for cell lookups from machine code [18/26] Documentation: nvmem: document cell tables and lookup entries [19/26] nvmem: add a notifier chain [20/26] nvmem: use SPDX license identifiers [21/26] nvmem: make the naming of arguments in nvmem_cell_get() consistent [22/26] nvmem: use EOPNOTSUPP instead of ENOSYS [23/26] nvmem: fix commenting style [24/26] nvmem: use octal permissions instead of constants [25/26] nvmem: sunxi_sid: remove unused variable in probe [26/26] nvmem: make nvmem_add_cells() static

Message ID

20180921134026.4596-4-srinivas.kandagatla@linaro.org

State

New

Headers

Received-SPF: pass (google.com: best guess record for domain of
	linux-kernel-owner@vger.kernel.org designates 209.132.180.67
	as permitted sender) client-ip=209.132.180.67; 
From: srinivas.kandagatla@linaro.org
To: gregkh@linuxfoundation.org
Cc: linux-kernel@vger.kernel.org,
	Bartosz Golaszewski <bgolaszewski@baylibre.com>,
	Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Subject: [PATCH 03/26] nvmem: provide nvmem_dev_name()
Date: Fri, 21 Sep 2018 06:40:03 -0700
Message-Id: <20180921134026.4596-4-srinivas.kandagatla@linaro.org>
In-Reply-To: <20180921134026.4596-1-srinivas.kandagatla@linaro.org>
References: <20180921134026.4596-1-srinivas.kandagatla@linaro.org>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Series

nvmem: patches for 4.20 | expand

Commit Message

Srinivas Kandagatla Sept. 21, 2018, 1:40 p.m. UTC

From: Bartosz Golaszewski <bgolaszewski@baylibre.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@baylibre.com>

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>

---
 drivers/nvmem/core.c           | 13 +++++++++++++
 include/linux/nvmem-consumer.h |  8 ++++++++
 2 files changed, 21 insertions(+)

-- 
2.19.0

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)

[03/26] nvmem: provide nvmem_dev_name()

Commit Message

Patch