6.6-stable review patch. If anyone has any objections, please let me know.
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From: Dmitry Baryshkov dmitry.baryshkov@linaro.org
[ Upstream commit 6786484223d5705bf7f919c1e5055d478ebeec32 ]
If NVMEM cell uses bit offset or specifies bit truncation, update raw_len manually (following the cell->bytes update), ensuring that the NVMEM access is still word-aligned.
Signed-off-by: Dmitry Baryshkov dmitry.baryshkov@linaro.org Signed-off-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org Link: https://lore.kernel.org/r/20250411112251.68002-11-srinivas.kandagatla@linaro... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/nvmem/core.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c index 3d69c76f19236..dd00cc09ae5ec 100644 --- a/drivers/nvmem/core.c +++ b/drivers/nvmem/core.c @@ -456,9 +456,11 @@ static int nvmem_cell_info_to_nvmem_cell_entry_nodup(struct nvmem_device *nvmem, cell->nbits = info->nbits; cell->np = info->np;
- if (cell->nbits) + if (cell->nbits) { cell->bytes = DIV_ROUND_UP(cell->nbits + cell->bit_offset, BITS_PER_BYTE); + cell->raw_len = ALIGN(cell->bytes, nvmem->word_size); + }
if (!IS_ALIGNED(cell->offset, nvmem->stride)) { dev_err(&nvmem->dev,