From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C7D8E274FE8; Tue, 29 Apr 2025 23:50:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745970620; cv=none; b=m0S9mP6dxPkKfKzBuiLs4aQb1BH3G8NqKNkyFBdSdWtEzvM7AigUHGjFzuOdIjtXZoskxa2LwafpLng9Pe5dFVXo20hSw7sq/0aZPn9V31o5RKUf98BTTFkm0zyt0dC4OUz/KmqEw1QcyYa4Hkp/TEfWbEcnAOI+9b4qJOwsq5c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745970620; c=relaxed/simple; bh=6N+9fP+CW7lhN19iz9KPcmJsUXKjoiVupQ+fXp5A/Is=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=TlUKWzEZS7fpJD4ZdHn8KEuyQWswnkDRnImMS4xTTKbGNdezp4O+vmp/Uya72B/u8YoH0JlCWTJc4yJkwxqZnWlJ7Af+yqXiaJkHi9kAE5J9zBnH9BB5IrW5kNcfiaIQ8Il6Ojzh3eX6iEcdZMDxQsW6ry0S/BDd63g++zPZLGM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=X0IT/e+2; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="X0IT/e+2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6F66FC4CEEE; Tue, 29 Apr 2025 23:50:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1745970620; bh=6N+9fP+CW7lhN19iz9KPcmJsUXKjoiVupQ+fXp5A/Is=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=X0IT/e+2geXdtmAwhRe9nauLgfvraDYu06cnFXVfAmajUiERX76YTrSTjDEuP0L9O KtCOFNtPX2YOhwRlWYevvJe+eIqqc5qPaG16IcylkVBQ8dxhw1t6d+P5+fZzGdWVaa c26p2KWVLFqvWqNXpKDOiOOmXJGQt2MKHr6QvGUg4HMHt5DazlqW963EVqSNtcU3gp tTWOci7C7Ug1KTGi3ImW9P4Xii5DPYYGyUo/YDjPd1Mzgq36/r15wJzbw/mIQajOoH 009OVXeJVJTxL9Y7RwvH34STmyygb8GFWeMLwAa9WY40cdqoY7vW3/X6DiaOacvFqb GCBWxm5deSVjg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Dmitry Baryshkov , Srinivas Kandagatla , Greg Kroah-Hartman , Sasha Levin , srini@kernel.org Subject: [PATCH AUTOSEL 6.14 07/39] nvmem: core: update raw_len if the bit reading is required Date: Tue, 29 Apr 2025 19:49:34 -0400 Message-Id: <20250429235006.536648-7-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250429235006.536648-1-sashal@kernel.org> References: <20250429235006.536648-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.14.4 Content-Transfer-Encoding: 8bit From: Dmitry Baryshkov [ 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 Signed-off-by: Srinivas Kandagatla Link: https://lore.kernel.org/r/20250411112251.68002-11-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- 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 7b8c85f9e035c..e206efc29a004 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(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, -- 2.39.5