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Thu, 03 Apr 2025 07:45:31 -0700 (PDT) Received: from localhost.localdomain ([5.133.47.210]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-39c3020d661sm2044374f8f.66.2025.04.03.07.45.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Apr 2025 07:45:30 -0700 (PDT) From: srinivas.kandagatla@linaro.org To: gregkh@linuxfoundation.org Cc: linux-kernel@vger.kernel.org, Dmitry Baryshkov , Srinivas Kandagatla Subject: [PATCH v3 10/13] nvmem: core: update raw_len if the bit reading is required Date: Thu, 3 Apr 2025 15:44:58 +0100 Message-Id: <20250403144501.202742-11-srinivas.kandagatla@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250403144501.202742-1-srinivas.kandagatla@linaro.org> References: <20250403144501.202742-1-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=6o2wzllNpXzhs6trxDlkHyVJbZYKpTR68bXt6jsCi1k=; b=owEBbQGS/pANAwAKAXqh/VnHNFU3AcsmYgBn7p7jboJ8XxL0UyZ73ssdMQeBJBYfMcuFV+Wn2 kjZEOmMDKKJATMEAAEKAB0WIQQi509axvzi9vce3Y16of1ZxzRVNwUCZ+6e4wAKCRB6of1ZxzRV N2i4B/9iOLMMFNB4XiTLe/mblgmJKaF80deufEJDCTikFMfY7B3JOb8ML/jjfqotRQCxj2lrr3L WA1fkhBq7PWv5rIiAkYyUEUSxT0s6fRDsM8/XoHbuMmMzFRSfcB1qaEUIcDVuFfZjwAD141guqe 56RuHE9XnxE4So2IoIoRyzgR613AXx6Mq8gKhld5zAkkUmWVleRD+E4VUVJkZKqMSER1rxbxsAy 8hc6oVC3dC9I6RA/YBdSxpOfAUlpCiB/vsYSew7UhCZB2ME7SqS4+AAqxc4RqZcsOTm2DWi0rKK CNdB23epCYmbH+ildXOoiDtPhjXYBPNiGYYd0xBuVAt5IWxl 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 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