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memory: tegra186-emc: Handle errors in BPMP response

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The return value from tegra_bpmp_transfer indicates the success or
failure of the IPC transaction with BPMP. If the transaction
succeeded, we also need to check the actual command's result code.
Add code to do this.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Link: https://lore.kernel.org/r/20210915085517.1669675-3-mperttunen@nvidia.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
This commit is contained in:
Mikko Perttunen 2021-09-15 11:55:15 +03:00 committed by Krzysztof Kozlowski
parent 77b14c9d05
commit 13324edbe9
1 changed files with 4 additions and 0 deletions
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4
drivers/memory/tegra/tegra186-emc.c
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@ -197,6 +197,10 @@ static int tegra186_emc_probe(struct platform_device *pdev)
dev_err(&pdev->dev, "failed to EMC DVFS pairs: %d\n", err);
goto put_bpmp;
}
if (msg.rx.ret < 0) {
dev_err(&pdev->dev, "EMC DVFS MRQ failed: %d (BPMP error code)\n", msg.rx.ret);
goto put_bpmp;
}
emc->debugfs.min_rate = ULONG_MAX;
emc->debugfs.max_rate = 0;