memory: tegra: make icc_set_bw return zero if BWMGR not supported

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.

Fixes: 9365bf006f53 ("PCI: tegra194: Add interconnect support in Tegra234")
Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20230621134400.23070-5-sumitg@nvidia.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

diff --git a/drivers/memory/tegra/tegra234.c b/drivers/memory/tegra/tegra234.c
index 4469430aa5fbefbdaf4bd30f1b1fe2993ceba9ae..8fb83b39f5f5b1903601da493b3f5cc2b8bff448 100644 (file)
--- a/drivers/memory/tegra/tegra234.c
+++ b/drivers/memory/tegra/tegra234.c
@@ -827,7 +827,7 @@ 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");
@@ -874,7 +874,7 @@ 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 ||