target/linux/generic/backport-6.1/819-v6.8-0010-nvmem-core-add-nvmem_dev_size-helper.patch

   1 From 33cf42e68efc8ff529a7eee08a4f0ba8c8d0a207 Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
   3 Date: Thu, 21 Dec 2023 18:34:17 +0100
   4 Subject: [PATCH] nvmem: core: add nvmem_dev_size() helper
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 This is required by layouts that need to read whole NVMEM content. It's
  10 especially useful for NVMEM devices without hardcoded layout (like
  11 U-Boot environment data block).
  12
  13 Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
  14 Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
  15 Link: https://lore.kernel.org/r/20231221173421.13737-2-zajec5@gmail.com
  16 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  17 ---
  18  drivers/nvmem/core.c           | 13 +++++++++++++
  19  include/linux/nvmem-consumer.h |  1 +
  20  2 files changed, 14 insertions(+)
  21
  22 --- a/drivers/nvmem/core.c
  23 +++ b/drivers/nvmem/core.c
  24 @@ -2164,6 +2164,19 @@ const char *nvmem_dev_name(struct nvmem_
  25  }
  26  EXPORT_SYMBOL_GPL(nvmem_dev_name);
  27
  28 +/**
  29 + * nvmem_dev_size() - Get the size of a given nvmem device.
  30 + *
  31 + * @nvmem: nvmem device.
  32 + *
  33 + * Return: size of the nvmem device.
  34 + */
  35 +size_t nvmem_dev_size(struct nvmem_device *nvmem)
  36 +{
  37 +       return nvmem->size;
  38 +}
  39 +EXPORT_SYMBOL_GPL(nvmem_dev_size);
  40 +
  41  static int __init nvmem_init(void)
  42  {
  43         int ret;
  44 --- a/include/linux/nvmem-consumer.h
  45 +++ b/include/linux/nvmem-consumer.h
  46 @@ -81,6 +81,7 @@ int nvmem_device_cell_write(struct nvmem
  47                             struct nvmem_cell_info *info, void *buf);
  48
  49  const char *nvmem_dev_name(struct nvmem_device *nvmem);
  50 +size_t nvmem_dev_size(struct nvmem_device *nvmem);
  51
  52  void nvmem_add_cell_lookups(struct nvmem_cell_lookup *entries,
  53                             size_t nentries);