interconnect: qcom: icc-rpmh: Add BCMs to commit list in pre_aggregate

We're only adding BCMs to the commit list in aggregate(), but there are
cases where pre_aggregate() is called without subsequently calling
aggregate(). In particular, in icc_sync_state() when a node with initial
BW has zero requests. Since BCMs aren't added to the commit list in
these cases, we don't actually send the zero BW request to HW. So the
resources remain on unnecessarily.

Add BCMs to the commit list in pre_aggregate() instead, which is always
called even when there are no requests.

Fixes: 976daac4a1c5 ("interconnect: qcom: Consolidate interconnect RPMh support")
Signed-off-by: Mike Tipton <mdtipton@codeaurora.org>
Link: https://lore.kernel.org/r/20210721175432.2119-5-mdtipton@codeaurora.org
Signed-off-by: Georgi Djakov <djakov@kernel.org>

diff --git a/drivers/interconnect/qcom/icc-rpmh.c b/drivers/interconnect/qcom/icc-rpmh.c
index f6fae64..27cc5f0 100644 (file)
--- a/drivers/interconnect/qcom/icc-rpmh.c
+++ b/drivers/interconnect/qcom/icc-rpmh.c
@@ -20,13 +20,18 @@ void qcom_icc_pre_aggregate(struct icc_node *node)
 {
        size_t i;
        struct qcom_icc_node *qn;
+       struct qcom_icc_provider *qp;
 
        qn = node->data;
+       qp = to_qcom_provider(node->provider);
 
        for (i = 0; i < QCOM_ICC_NUM_BUCKETS; i++) {
                qn->sum_avg[i] = 0;
                qn->max_peak[i] = 0;
        }
+
+       for (i = 0; i < qn->num_bcms; i++)
+               qcom_icc_bcm_voter_add(qp->voter, qn->bcms[i]);
 }
 EXPORT_SYMBOL_GPL(qcom_icc_pre_aggregate);
 
@@ -44,10 +49,8 @@ int qcom_icc_aggregate(struct icc_node *node, u32 tag, u32 avg_bw,
 {
        size_t i;
        struct qcom_icc_node *qn;
-       struct qcom_icc_provider *qp;
 
        qn = node->data;
-       qp = to_qcom_provider(node->provider);
 
        if (!tag)
                tag = QCOM_ICC_TAG_ALWAYS;
@@ -67,9 +70,6 @@ int qcom_icc_aggregate(struct icc_node *node, u32 tag, u32 avg_bw,
        *agg_avg += avg_bw;
        *agg_peak = max_t(u32, *agg_peak, peak_bw);
 
-       for (i = 0; i < qn->num_bcms; i++)
-               qcom_icc_bcm_voter_add(qp->voter, qn->bcms[i]);
-
        return 0;
 }
 EXPORT_SYMBOL_GPL(qcom_icc_aggregate);