From: Alex Elder <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
Subject: [PATCH 05/12] soc: qcom: smem: verify both host ids in partition header
Date: Tue, 1 May 2018 20:10:12 -0500 [thread overview]
Message-ID: <20180502011019.22812-6-elder@linaro.org> (raw)
In-Reply-To: <20180502011019.22812-1-elder@linaro.org>
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 <elder@linaro.org>
---
drivers/soc/qcom/smem.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
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;
}
--
2.14.1
next prev parent reply other threads:[~2018-05-02 1:10 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-02 1:10 [PATCH 00/12] soc: qcom: smem: some refactoring Alex Elder
2018-05-02 1:10 ` [PATCH 01/12] soc: qcom: smem: rename variable in qcom_smem_get_global() Alex Elder
2018-05-02 1:10 ` [PATCH 02/12] soc: qcom: smem: initialize region struct only when successful Alex Elder
2018-05-02 1:10 ` [PATCH 03/12] soc: qcom: smem: always ignore partitions with 0 offset or size Alex Elder
2018-05-02 1:10 ` [PATCH 04/12] soc: qcom: smem: small refactor in qcom_smem_enumerate_partitions() Alex Elder
2018-05-02 1:10 ` Alex Elder [this message]
2018-05-02 1:10 ` [PATCH 06/12] soc: qcom: smem: require order of host ids to match Alex Elder
2018-05-02 1:10 ` [PATCH 07/12] soc: qcom: smem: introduce qcom_smem_partition_header() Alex Elder
2018-05-02 1:10 ` [PATCH 08/12] soc: qcom: smem: verify partition header size Alex Elder
2018-05-02 1:10 ` [PATCH 09/12] soc: qcom: smem: verify partition offset_free_uncached Alex Elder
2018-05-02 1:10 ` [PATCH 10/12] soc: qcom: smem: small change in global entry loop Alex Elder
2018-05-02 1:10 ` [PATCH 11/12] soc: qcom: smem: verify partition host ids match Alex Elder
2018-05-02 1:10 ` [PATCH 12/12] soc: qcom: smem: a few last cleanups Alex Elder
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