Check that the NVMEM cell's raw_len is a aligned to word_size. Otherwise
Otherwise drivers might face incomplete read while accessing the last
part of the NVMEM cell.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
---
drivers/nvmem/core.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index c0af43a37195c3869507a203b370615309aeee67..a03a3006bd611ea6e91703cd19c2842bd4f56659 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -602,6 +602,14 @@ static int nvmem_cell_info_to_nvmem_cell_entry_nodup(struct nvmem_device *nvmem,
return -EINVAL;
}
+ if (!IS_ALIGNED(cell->raw_len, nvmem->word_size)) {
+ dev_err(&nvmem->dev,
+ "cell %s raw len %zd unaligned to nvmem word size %d\n",
+ cell->name ?: "<unknown>", cell->raw_len,
+ nvmem->word_size);
+ return -EINVAL;
+ }
+
return 0;
}
--
2.39.5
