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[93.34.93.173]) by smtp.googlemail.com with ESMTPSA id b21-20020a05600c4e1500b003f4283f5c1bsm15922064wmq.2.2023.05.26.04.55.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 26 May 2023 04:55:31 -0700 (PDT) From: Christian Marangi To: Andy Gross , Bjorn Andersson , Konrad Dybcio , Dmitry Baryshkov , linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Christian Marangi , Robert Marko , stable@vger.kernel.org Subject: [PATCH] soc: qcom: mdt_loader: Fix unconditional call to scm_pas_mem_setup Date: Fri, 26 May 2023 13:55:11 +0200 Message-Id: <20230526115511.3328-1-ansuelsmth@gmail.com> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Commit ebeb20a9cd3f ("soc: qcom: mdt_loader: Always invoke PAS mem_setup") dropped the relocate check and made pas_mem_setup run unconditionally. The code was later moved with commit f4e526ff7e38 ("soc: qcom: mdt_loader: Extract PAS operations") to qcom_mdt_pas_init() effectively losing track of what was actually done. The assumption that PAS mem_setup can be done anytime was effectively wrong, with no good reason and this caused regression on some SoC that use remoteproc to bringup ath11k. One example is IPQ8074 SoC that effectively broke resulting in remoteproc silently die and ath11k not working. On this SoC FW relocate is not enabled and PAS mem_setup was correctly skipped in previous kernel version resulting in correct bringup and function of remoteproc and ath11k. To fix the regression, reintroduce the relocate check in qcom_mdt_pas_init() and correctly skip PAS mem_setup where relocate is not enabled. Fixes: ebeb20a9cd3f ("soc: qcom: mdt_loader: Always invoke PAS mem_setup") Tested-by: Robert Marko Co-developed-by: Robert Marko Signed-off-by: Robert Marko Signed-off-by: Christian Marangi Cc: stable@vger.kernel.org Reviewed-by: Mukesh Ojha --- drivers/soc/qcom/mdt_loader.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/drivers/soc/qcom/mdt_loader.c b/drivers/soc/qcom/mdt_loader.c index 33dd8c315eb7..46820bcdae98 100644 --- a/drivers/soc/qcom/mdt_loader.c +++ b/drivers/soc/qcom/mdt_loader.c @@ -210,6 +210,7 @@ int qcom_mdt_pas_init(struct device *dev, const struct = firmware *fw, const struct elf32_hdr *ehdr; phys_addr_t min_addr =3D PHYS_ADDR_MAX; phys_addr_t max_addr =3D 0; + bool relocate =3D false; size_t metadata_len; void *metadata; int ret; @@ -224,6 +225,9 @@ int qcom_mdt_pas_init(struct device *dev, const struct = firmware *fw, if (!mdt_phdr_valid(phdr)) continue; =20 + if (phdr->p_flags & QCOM_MDT_RELOCATABLE) + relocate =3D true; + if (phdr->p_paddr < min_addr) min_addr =3D phdr->p_paddr; =20 @@ -246,11 +250,13 @@ int qcom_mdt_pas_init(struct device *dev, const struc= t firmware *fw, goto out; } =20 - ret =3D qcom_scm_pas_mem_setup(pas_id, mem_phys, max_addr - min_addr); - if (ret) { - /* Unable to set up relocation */ - dev_err(dev, "error %d setting up firmware %s\n", ret, fw_name); - goto out; + if (relocate) { + ret =3D qcom_scm_pas_mem_setup(pas_id, mem_phys, max_addr - min_addr); + if (ret) { + /* Unable to set up relocation */ + dev_err(dev, "error %d setting up firmware %s\n", ret, fw_name); + goto out; + } } =20 out: --=20 2.39.2