From patchwork Tue Jun 26 00:58:49 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [resend, 05/12] soc: qcom: smem: verify both host ids in partition header X-Patchwork-Submitter: Alex Elder X-Patchwork-Id: 139903 Message-Id: <20180626005856.14174-6-elder@linaro.org> To: andy.gross@linaro.org Cc: clew@codeaurora.org, aneela@codeaurora.org, david.brown@linaro.org, linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org, linux-kernel@vger.kernel.org Date: Mon, 25 Jun 2018 19:58:49 -0500 From: Alex Elder List-Id: The global partition is indicated by having both host values in its table of contents entry equal SMEM_GLOBAL_HOST=0xfffe. In qcom_smem_set_global_partition(), we check whether the header structure at the beginning of the partition contains that host value, but the check only verifies *one* of them. Change the check so the partition header must have SMEM_GLOBAL_HOST for *both* its host fields. Signed-off-by: Alex Elder --- drivers/soc/qcom/smem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- 2.17.1 diff --git a/drivers/soc/qcom/smem.c b/drivers/soc/qcom/smem.c index 5d3ed510e54b..6931602d9a9e 100644 --- a/drivers/soc/qcom/smem.c +++ b/drivers/soc/qcom/smem.c @@ -769,7 +769,7 @@ static int qcom_smem_set_global_partition(struct qcom_smem *smem) return -EINVAL; } - if (host0 != SMEM_GLOBAL_HOST && host1 != SMEM_GLOBAL_HOST) { + if (host0 != SMEM_GLOBAL_HOST || host1 != SMEM_GLOBAL_HOST) { dev_err(smem->dev, "Global partition hosts are invalid\n"); return -EINVAL; }