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soc/tegra: pmc: Don't register sys-off handler for multi-socket devices

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The kernel does not permit a device to register multiple sys-off
handlers for non-default priority levels. Hence, for multi-socket Tegra
devices, registering the sys-off handler in the Tegra PMC driver (which
uses the low priority level) more than once fails.

The Tegra PMC sys-off handler is supported for all current generations
of the Tegra SoC, however, it is only used as a low priority handler if
everything else fails. For example, on Tegra264 the EFI reboot handler
is called to restart the device. Therefore, for multi-socket devices,
skip the registering of the sys-off handler to because this is not
critical.

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Jon Hunter 2026-07-15 12:10:37 +01:00 committed by Thierry Reding
parent dc59e4fea9
commit 74a161d20e
1 changed files with 12 additions and 9 deletions
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21
drivers/soc/tegra/pmc.c
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@ -3074,15 +3074,18 @@ static int tegra_pmc_probe(struct platform_device *pdev)
}
}
err = devm_register_sys_off_handler(&pdev->dev,
SYS_OFF_MODE_RESTART,
SYS_OFF_PRIO_LOW,
tegra_pmc_restart_handler,
pmc);
if (err) {
dev_err(&pdev->dev, "failed to register sys-off handler: %d\n",
err);
return err;
if (dev_to_node(&pdev->dev) == NUMA_NO_NODE) {
err = devm_register_sys_off_handler(&pdev->dev,
SYS_OFF_MODE_RESTART,
SYS_OFF_PRIO_LOW,
tegra_pmc_restart_handler,
pmc);
if (err) {
dev_err(&pdev->dev,
"failed to register sys-off handler: %d\n",
err);
return err;
}
}
/*