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From:   Sumit Gupta <sumitg@nvidia.com>
To:     <krzysztof.kozlowski@linaro.org>, <treding@nvidia.com>,
        <jonathanh@nvidia.com>, <linux-kernel@vger.kernel.org>,
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CC:     <bbasu@nvidia.com>, <talho@nvidia.com>, <sumitg@nvidia.com>
Subject: [Patch RESEND 4/4] memory: tegra: make icc_set_bw return zero if BWMGR not supported
Date:   Wed, 21 Jun 2023 19:14:00 +0530
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Return zero from icc_set_bw() to MC client driver if MRQ_BWMGR_INT
is not supported by the BPMP-FW. Currently, 'EINVAL' is returned
which causes error message in client drivers even when the platform
doesn't support scaling.

Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
---
 drivers/memory/tegra/tegra234.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/memory/tegra/tegra234.c b/drivers/memory/tegra/tegra234.c
index bc73be7fe143..07aba301a173 100644
--- a/drivers/memory/tegra/tegra234.c
+++ b/drivers/memory/tegra/tegra234.c
@@ -951,7 +951,7 @@ static int tegra234_mc_icc_set(struct icc_node *src, struct icc_node *dst)
 		return 0;
 
 	if (!mc->bwmgr_mrq_supported)
-		return -EINVAL;
+		return 0;
 
 	if (!mc->bpmp) {
 		dev_err(mc->dev, "BPMP reference NULL\n");
@@ -998,7 +998,7 @@ static int tegra234_mc_icc_aggregate(struct icc_node *node, u32 tag, u32 avg_bw,
 	struct tegra_mc *mc = icc_provider_to_tegra_mc(p);
 
 	if (!mc->bwmgr_mrq_supported)
-		return -EINVAL;
+		return 0;
 
 	if (node->id == TEGRA_ICC_MC_CPU_CLUSTER0 ||
 	    node->id == TEGRA_ICC_MC_CPU_CLUSTER1 ||
-- 
2.17.1