target/linux/generic/backport-5.10/804-v5.14-0005-nvmem-core-constify-nvmem_cell_read_variable_common-.patch

   1 From 1f7b4d87874624f4beb25253900a25306a193b8b Mon Sep 17 00:00:00 2001
   2 From: Douglas Anderson <dianders@chromium.org>
   3 Date: Fri, 11 Jun 2021 09:33:47 +0100
   4 Subject: [PATCH] nvmem: core: constify nvmem_cell_read_variable_common()
   5  return value
   6
   7 The caller doesn't modify the memory pointed to by the pointer so it
   8 can be const.
   9
  10 Suggested-by: Stephen Boyd <swboyd@chromium.org>
  11 Signed-off-by: Douglas Anderson <dianders@chromium.org>
  12 Reviewed-by: Stephen Boyd <swboyd@chromium.org>
  13 Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
  14 Link: https://lore.kernel.org/r/20210611083348.20170-9-srinivas.kandagatla@linaro.org
  15 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  16 ---
  17  drivers/nvmem/core.c | 10 +++++-----
  18  1 file changed, 5 insertions(+), 5 deletions(-)
  19
  20 --- a/drivers/nvmem/core.c
  21 +++ b/drivers/nvmem/core.c
  22 @@ -1614,9 +1614,9 @@ int nvmem_cell_read_u64(struct device *d
  23  }
  24  EXPORT_SYMBOL_GPL(nvmem_cell_read_u64);
  25
  26 -static void *nvmem_cell_read_variable_common(struct device *dev,
  27 -                                            const char *cell_id,
  28 -                                            size_t max_len, size_t *len)
  29 +static const void *nvmem_cell_read_variable_common(struct device *dev,
  30 +                                                  const char *cell_id,
  31 +                                                  size_t max_len, size_t *len)
  32  {
  33         struct nvmem_cell *cell;
  34         int nbits;
  35 @@ -1660,7 +1660,7 @@ int nvmem_cell_read_variable_le_u32(stru
  36                                     u32 *val)
  37  {
  38         size_t len;
  39 -       u8 *buf;
  40 +       const u8 *buf;
  41         int i;
  42
  43         buf = nvmem_cell_read_variable_common(dev, cell_id, sizeof(*val), &len);
  44 @@ -1691,7 +1691,7 @@ int nvmem_cell_read_variable_le_u64(stru
  45                                     u64 *val)
  46  {
  47         size_t len;
  48 -       u8 *buf;
  49 +       const u8 *buf;
  50         int i;
  51
  52         buf = nvmem_cell_read_variable_common(dev, cell_id, sizeof(*val), &len);