From 13324edbe9269e6fbca4d0f5146b18ef8478c958 Mon Sep 17 00:00:00 2001 From: Mikko Perttunen Date: Wed, 15 Sep 2021 11:55:15 +0300 Subject: 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 Link: https://lore.kernel.org/r/20210915085517.1669675-3-mperttunen@nvidia.com Signed-off-by: Krzysztof Kozlowski --- drivers/memory/tegra/tegra186-emc.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/memory/tegra') diff --git a/drivers/memory/tegra/tegra186-emc.c b/drivers/memory/tegra/tegra186-emc.c index d65e7c2a580b..abc0c2eeaab7 100644 --- a/drivers/memory/tegra/tegra186-emc.c +++ b/drivers/memory/tegra/tegra186-emc.c @@ -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; -- cgit