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Fri, 07 Mar 2025 09:58:04 -0800 (PST) Received: from localhost.localdomain ([5.133.47.210]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-5e5c745c5afsm2803622a12.18.2025.03.07.09.58.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 07 Mar 2025 09:58:03 -0800 (PST) From: srinivas.kandagatla@linaro.org To: gregkh@linuxfoundation.org Cc: linux-kernel@vger.kernel.org, Dmitry Baryshkov , Mark Brown , Srinivas Kandagatla Subject: [PATCH 12/14] nvmem: make the misaligned raw_len non-fatal Date: Fri, 7 Mar 2025 17:57:22 +0000 Message-Id: <20250307175724.15068-13-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=1367; i=srinivas.kandagatla@linaro.org; h=from:subject; bh=9QZjd6mQ88in1BGtGMk3bYHEXDJuYcnE0RuCLJqKxlE=; b=owEBbQGS/pANAwAKAXqh/VnHNFU3AcsmYgBnyzN9IZKCrf2NaI359lPwEfGXiJ7+5dLr1X6Mp KO0risUtH+JATMEAAEKAB0WIQQi509axvzi9vce3Y16of1ZxzRVNwUCZ8szfQAKCRB6of1ZxzRV Nw6BB/9+y/QfU4PJOKIXO60eBVIhU1IS3QOkYY44/NG6yBQvzhqeTF39PkI1z/ZWa+KGPi9A5Eo keKdSDWzF8xbbFrrXy/qIJi0zIodfdTNGHPw5Ect3fHVh28TkpZcDgKqY34CB9j+ubTJEyuwNcp krpLehXKL4upjzmIjQJSYG0TM5X+z29gJ76/fkevIbcbCPgtFX1qdRs3r+6nlW5Eii6ETecy3Y8 NJgDX/PIF9ZrQ1Xjcwk+8qS9GqMVeeceUU7gjYAbpWE+doU9R33AJzBxfRSnz8bFYUPQcg9f4tb Fzrm6jKtqcC/cuXQWTohQh0EK2VMwlivJJ9pWiHXUCSJruuR 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 The commit 11ccaa312111 ("nvmem: core: verify cell's raw_len") enforced the raw read len being aligned to the NVMEM's word_size. However this change broke some of the platforms, because those used misaligned reads. Make this error non-fatal for the drivers that didn't specify raw_len directly and just increase the raw_len making it aligned. Fixes: 11ccaa312111 ("nvmem: core: verify cell's raw_len") Reported-by: Mark Brown Closes: https://lore.kernel.org/linux-arm-msm/Z7Xv9lNc6ckJVtKc@finisterre.s= irena.org.uk/ Tested-by: Mark Brown Signed-off-by: Dmitry Baryshkov Signed-off-by: Srinivas Kandagatla --- drivers/nvmem/core.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c index b6f8544fd966..e206efc29a00 100644 --- a/drivers/nvmem/core.c +++ b/drivers/nvmem/core.c @@ -612,7 +612,11 @@ static int nvmem_cell_info_to_nvmem_cell_entry_nodup(s= truct nvmem_device *nvmem, "cell %s raw len %zd unaligned to nvmem word size %d\n", cell->name ?: "", cell->raw_len, nvmem->word_size); - return -EINVAL; + + if (info->raw_len) + return -EINVAL; + + cell->raw_len =3D ALIGN(cell->raw_len, nvmem->word_size); } =20 return 0; --=20 2.25.1