[PATCH v5 08/21] nvmem: core: drop the removal of the cells in nvmem_add_cells()

Michael Walle
2022-12-06T20:10:38Z

If nvmem_add_cells() fails, the whole nvmem_register() will fail
and the cells will then be removed anyway. This is a preparation
to introduce a nvmem_add_one_cell() which can then be used by
nvmem_add_cells().

This is then the same to what nvmem_add_cells_from_table() and
nvmem_add_cells_from_of() do.

Signed-off-by: Michael Walle <michael@walle.cc>
---
changes since v4:
- none

changes since v3:
- fix typo, s/prepartion/preparation/

changes since v2:
- none

changes since v1:
- none

drivers/nvmem/core.c | 14 ++++----------
1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index 24573e63e5a9..7c76e0e0072e 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -515,7 +515,7 @@ static int nvmem_add_cells(struct nvmem_device *nvmem,
int ncells)
{
struct nvmem_cell_entry **cells;
- int i, rval;
+ int i, rval = 0;

cells = kcalloc(ncells, sizeof(*cells), GFP_KERNEL);
if (!cells)
@@ -525,28 +525,22 @@ static int nvmem_add_cells(struct nvmem_device *nvmem,
cells[i] = kzalloc(sizeof(**cells), GFP_KERNEL);
if (!cells[i]) {
rval = -ENOMEM;
- goto err;
+ goto out;
}

rval = nvmem_cell_info_to_nvmem_cell_entry(nvmem, &info[i], cells[i]);
if (rval) {
kfree(cells[i]);
- goto err;
+ goto out;
}

nvmem_cell_entry_add(cells[i]);
}

+out:
/* remove tmp array */
kfree(cells);

- return 0;
-err:
- while (i--)
- nvmem_cell_entry_drop(cells[i]);
-
- kfree(cells);
-
return rval;
}