memory: tegra186-emc: Handle errors in BPMP response

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 коммит произвёл Krzysztof Kozlowski
Родитель 77b14c9d05
Коммит 13324edbe9
1 изменённых файлов: 4 добавлений и 0 удалений

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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;