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Fri, 11 Apr 2025 04:23:14 -0700 (PDT) Received: from localhost.localdomain ([5.133.47.210]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-43f2075fc8esm85171445e9.30.2025.04.11.04.23.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 11 Apr 2025 04:23:13 -0700 (PDT) From: srinivas.kandagatla@linaro.org To: gregkh@linuxfoundation.org Cc: linux-kernel@vger.kernel.org, srini@kernel.org, Dmitry Baryshkov , Srinivas Kandagatla Subject: [RESEND PATCH v3 10/13] nvmem: core: update raw_len if the bit reading is required Date: Fri, 11 Apr 2025 12:22:48 +0100 Message-Id: <20250411112251.68002-11-srinivas.kandagatla@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250411112251.68002-1-srinivas.kandagatla@linaro.org> References: <20250411112251.68002-1-srinivas.kandagatla@linaro.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Dmitry Baryshkov 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 Signed-off-by: Srinivas Kandagatla --- 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 7b8c85f9e035..e206efc29a00 100644 --- a/drivers/nvmem/core.c +++ b/drivers/nvmem/core.c @@ -594,9 +594,11 @@ static int nvmem_cell_info_to_nvmem_cell_entry_nodup(s= truct nvmem_device *nvmem, cell->nbits =3D info->nbits; cell->np =3D info->np; =20 - if (cell->nbits) + if (cell->nbits) { cell->bytes =3D DIV_ROUND_UP(cell->nbits + cell->bit_offset, BITS_PER_BYTE); + cell->raw_len =3D ALIGN(cell->bytes, nvmem->word_size); + } =20 if (!IS_ALIGNED(cell->offset, nvmem->stride)) { dev_err(&nvmem->dev, --=20 2.25.1