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authorAlex Elder <elder@linaro.org>2018-04-11 00:25:41 +0200
committerAndy Gross <andy.gross@linaro.org>2018-05-25 22:53:55 +0200
commit8fa1a21409da6abfe890f66532f9fcd8d2c25a3d (patch)
tree307f9d4ccf5a83974710e42b11baa3d6a9d1d909 /drivers/soc
parentsoc: qcom: smem: fix off-by-one error in qcom_smem_alloc_private() (diff)
downloadlinux-8fa1a21409da6abfe890f66532f9fcd8d2c25a3d.tar.xz
linux-8fa1a21409da6abfe890f66532f9fcd8d2c25a3d.zip
soc: qcom: smem: fix qcom_smem_set_global_partition()
If there is at least one entry in the partition table, but no global entry, the qcom_smem_set_global_partition() should return an error just like it does if there are no partition table entries. It turns out the function still returns an error in this case, but it waits to do so until it has mistakenly treated the last entry in the table as if it were the global entry found. Fix the function to return immediately if no global entry is found in the table. Signed-off-by: Alex Elder <elder@linaro.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Andy Gross <andy.gross@linaro.org>
Diffstat (limited to 'drivers/soc')
-rw-r--r--drivers/soc/qcom/smem.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/soc/qcom/smem.c b/drivers/soc/qcom/smem.c
index 0ed263055988..6e42599b70d4 100644
--- a/drivers/soc/qcom/smem.c
+++ b/drivers/soc/qcom/smem.c
@@ -698,9 +698,10 @@ static u32 qcom_smem_get_item_count(struct qcom_smem *smem)
static int qcom_smem_set_global_partition(struct qcom_smem *smem)
{
struct smem_partition_header *header;
- struct smem_ptable_entry *entry = NULL;
+ struct smem_ptable_entry *entry;
struct smem_ptable *ptable;
u32 host0, host1, size;
+ bool found = false;
int i;
ptable = qcom_smem_get_ptable(smem);
@@ -712,11 +713,13 @@ static int qcom_smem_set_global_partition(struct qcom_smem *smem)
host0 = le16_to_cpu(entry->host0);
host1 = le16_to_cpu(entry->host1);
- if (host0 == SMEM_GLOBAL_HOST && host0 == host1)
+ if (host0 == SMEM_GLOBAL_HOST && host0 == host1) {
+ found = true;
break;
+ }
}
- if (!entry) {
+ if (!found) {
dev_err(smem->dev, "Missing entry for global partition\n");
return -EINVAL;
}