soc: qcom: smem: check sooner in qcom_smem_set_global_partition()

There's no sense in scanning the partition table again if we know
the global partition has already been discovered.  Check for a
non-null global_partition pointer in qcom_smem_set_global_partition()
immediately.

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>

diff --git a/drivers/soc/qcom/smem.c b/drivers/soc/qcom/smem.c
index 6e42599..7d9a43d 100644 (file)
--- a/drivers/soc/qcom/smem.c
+++ b/drivers/soc/qcom/smem.c
@@ -364,6 +364,11 @@ static int qcom_smem_alloc_private(struct qcom_smem *smem,
        end = phdr_to_last_uncached_entry(phdr);
        cached = phdr_to_last_cached_entry(phdr);
 
+       if (smem->global_partition) {
+               dev_err(smem->dev, "Already found the global partition\n");
+               return -EINVAL;
+       }
+
        while (hdr < end) {
                if (hdr->canary != SMEM_PRIVATE_CANARY)
                        goto bad_canary;
@@ -729,11 +734,6 @@ static int qcom_smem_set_global_partition(struct qcom_smem *smem)
                return -EINVAL;
        }
 
-       if (smem->global_partition) {
-               dev_err(smem->dev, "Already found the global partition\n");
-               return -EINVAL;
-       }
-
        header = smem->regions[0].virt_base + le32_to_cpu(entry->offset);
        host0 = le16_to_cpu(header->host0);
        host1 = le16_to_cpu(header->host1);