[PATCH 2/7] nvmem: core: round up to word_size

[Sven Peter via B4 Relay]

From: Sven Peter <sven at svenpeter.dev>

Some nvmem controllers like Apple's eFuses or Nintendo's OTP have a cell
word size that's larger than one byte and cannot read anything smaller.
Round up cell->bytes correctly when accessing a subset of bits.

Signed-off-by: Sven Peter <sven at svenpeter.dev>
---
 drivers/nvmem/core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index 1bd39b12c21a86b9b135be95251a52a10543c2ea..02081c93fa467e5448bd78a4920072d437365fb9 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -595,8 +595,8 @@ static int nvmem_cell_info_to_nvmem_cell_entry_nodup(struct nvmem_device *nvmem,
 	cell->np = info->np;
 
 	if (cell->nbits)
-		cell->bytes = DIV_ROUND_UP(cell->nbits + cell->bit_offset,
-					   BITS_PER_BYTE);
+		cell->bytes = round_up(DIV_ROUND_UP(cell->nbits + cell->bit_offset,
+					   BITS_PER_BYTE), nvmem->word_size);
 
 	if (!IS_ALIGNED(cell->offset, nvmem->stride)) {
 		dev_err(&nvmem->dev,

-- 
2.34.1