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 3FCF2D512 for ; Mon, 15 May 2023 17:01:07 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9ECC9C433D2; Mon, 15 May 2023 17:01:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1684170067; bh=kgXIv9b0Q1x6z5FTnOZu/VyQ1bcISavoEtagl+jYDWs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DX2OcBdRKnL9X1p/4MTUkcay3eMohJeJAbMTgPtB/hT6ZJsRN5VZ1PsP9LAWmViP8 F23judGtpWEaBz4x+Yae7oslmDUbT9bzh6pfyqhDpYhR7abXAKZzLZbuifHNb5OfMP pjjdLMTZ3iR1UEx0koCiCdug4C+TaiUno1E5LwOI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Steev Klimaszewski , Manivannan Sadhasivam , Bjorn Andersson , Sasha Levin Subject: [PATCH 6.1 014/239] soc: qcom: llcc: Do not create EDAC platform device on SDM845 Date: Mon, 15 May 2023 18:24:37 +0200 Message-Id: <20230515161722.018718138@linuxfoundation.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230515161721.545370111@linuxfoundation.org> References: <20230515161721.545370111@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Manivannan Sadhasivam [ Upstream commit cca94f1dd6d0a4c7e5c8190672f5747e3c00ddde ] The platforms based on SDM845 SoC locks the access to EDAC registers in the bootloader. So probing the EDAC driver will result in a crash. Hence, disable the creation of EDAC platform device on all SDM845 devices. The issue has been observed on Lenovo Yoga C630 and DB845c. While at it, also sort the members of `struct qcom_llcc_config` to avoid any holes in-between. Cc: # 5.10 Reported-by: Steev Klimaszewski Signed-off-by: Manivannan Sadhasivam Signed-off-by: Bjorn Andersson Link: https://lore.kernel.org/r/20230314080443.64635-15-manivannan.sadhasivam@linaro.org Signed-off-by: Sasha Levin --- drivers/soc/qcom/llcc-qcom.c | 24 +++++++++++++++++------- 1 file changed, 17 insertions(+), 7 deletions(-) diff --git a/drivers/soc/qcom/llcc-qcom.c b/drivers/soc/qcom/llcc-qcom.c index 63a08635fc159..d4cba3b3c56c4 100644 --- a/drivers/soc/qcom/llcc-qcom.c +++ b/drivers/soc/qcom/llcc-qcom.c @@ -101,10 +101,11 @@ struct llcc_slice_config { struct qcom_llcc_config { const struct llcc_slice_config *sct_data; - int size; - bool need_llcc_cfg; const u32 *reg_offset; const struct llcc_edac_reg_offset *edac_reg_offset; + int size; + bool need_llcc_cfg; + bool no_edac; }; enum llcc_reg_offset { @@ -401,6 +402,7 @@ static const struct qcom_llcc_config sdm845_cfg = { .need_llcc_cfg = false, .reg_offset = llcc_v1_reg_offset, .edac_reg_offset = &llcc_v1_edac_reg_offset, + .no_edac = true, }; static const struct qcom_llcc_config sm6350_cfg = { @@ -851,11 +853,19 @@ static int qcom_llcc_probe(struct platform_device *pdev) drv_data->ecc_irq = platform_get_irq_optional(pdev, 0); - llcc_edac = platform_device_register_data(&pdev->dev, - "qcom_llcc_edac", -1, drv_data, - sizeof(*drv_data)); - if (IS_ERR(llcc_edac)) - dev_err(dev, "Failed to register llcc edac driver\n"); + /* + * On some platforms, the access to EDAC registers will be locked by + * the bootloader. So probing the EDAC driver will result in a crash. + * Hence, disable the creation of EDAC platform device for the + * problematic platforms. + */ + if (!cfg->no_edac) { + llcc_edac = platform_device_register_data(&pdev->dev, + "qcom_llcc_edac", -1, drv_data, + sizeof(*drv_data)); + if (IS_ERR(llcc_edac)) + dev_err(dev, "Failed to register llcc edac driver\n"); + } return 0; err: -- 2.39.2