linux-kernel - [PATCH v4 07/12] interconnect: qcom: icc-rpm: Allow negative num_bus

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Message-Id: <20230214143720.2416762-8-konrad.dybcio@linaro.org>
Date:   Tue, 14 Feb 2023 15:37:15 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     linux-arm-msm@...r.kernel.org, andersson@...nel.org,
        agross@...nel.org
Cc:     marijn.suijten@...ainline.org,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Georgi Djakov <djakov@...nel.org>, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v4 07/12] interconnect: qcom: icc-rpm: Allow negative num_bus_clocks

In some rare cases, buses will not have *any* bus-scaling clocks,
which is "fine", as the voting can be done through RPM provided that
the necessary QoS clocks are enabled. Allow specifying a negative (-1)
number of clocks to make the driver accept such cases, without having
to add a lot of boilerplate to all existing ICC drivers for SoCs with
SMD RPM.

FWIW this value was previously being assigned to a >>signed<< integer
as well.

Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
---
 drivers/interconnect/qcom/icc-rpm.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/interconnect/qcom/icc-rpm.h b/drivers/interconnect/qcom/icc-rpm.h
index 729573f0d9fe..9dd631964b8c 100644
--- a/drivers/interconnect/qcom/icc-rpm.h
+++ b/drivers/interconnect/qcom/icc-rpm.h
@@ -96,7 +96,7 @@ struct qcom_icc_desc {
 	struct qcom_icc_node * const *nodes;
 	size_t num_nodes;
 	const char * const *bus_clocks;
-	size_t num_bus_clocks;
+	int num_bus_clocks;
 	const char * const *intf_clocks;
 	size_t num_intf_clocks;
 	bool has_bus_pd;
-- 
2.39.1