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Fri, 07 Mar 2025 09:58:01 -0800 (PST) Received: from localhost.localdomain ([5.133.47.210]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-5e5c745c5afsm2803622a12.18.2025.03.07.09.58.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 07 Mar 2025 09:58:00 -0800 (PST) From: srinivas.kandagatla@linaro.org To: gregkh@linuxfoundation.org Cc: linux-kernel@vger.kernel.org, Dmitry Baryshkov , Srinivas Kandagatla Subject: [PATCH 10/14] nvmem: core: update raw_len if the bit reading is required Date: Fri, 7 Mar 2025 17:57:20 +0000 Message-Id: <20250307175724.15068-11-srinivas.kandagatla@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250307175724.15068-1-srinivas.kandagatla@linaro.org> References: <20250307175724.15068-1-srinivas.kandagatla@linaro.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=999; i=srinivas.kandagatla@linaro.org; h=from:subject; bh=xVVZjRsf56W4+bQzTy7AY8cftfLAm8ijSLXuk7bNC3A=; b=owEBbQGS/pANAwAKAXqh/VnHNFU3AcsmYgBnyzN96jPOMBgH4szUGTLHYuB7YAdWbuTzMIalV 8RLx+cjJw2JATMEAAEKAB0WIQQi509axvzi9vce3Y16of1ZxzRVNwUCZ8szfQAKCRB6of1ZxzRV NzOIB/kBTQbl8usgSteslbgvRoLsbhvGvV3kta9lLU7TKLMwM04vsvf312YxQyfKT0qhBLdOuUs VDfzh6DWqn7Uyea+x1LIf8nku0kJnSkBwY1cXIWTbHwDKRPpHrPWp4fwj9nrhh5oZJ3Lma76sCJ v17ODqZNAieMYOMrJVAaKMVyz4aBCWgZMc3NYIPdaPF37P1hV6RxpZut77CmbwzjApG48OfPvyY qR1gLs2bcA+wcX4VqRBvLvyuzTnKqiez3wVnlkanTaaGGuU9mIFTFXq20Pr4nXNGf5TZe+Nl5m1 J7+6b8V+T+EcITZwZYGXvukTQ2rQRHx97xtRXyycWzWjH9uF X-Developer-Key: i=srinivas.kandagatla@linaro.org; a=openpgp; fpr=ED6472765AB36EC43B3EF97AD77E3FC0562560D6 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 ad9b716e8123..b6f8544fd966 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