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69 lines
2.7 KiB
Diff
69 lines
2.7 KiB
Diff
From 9ac53d5532cc4bb595bbee86ccba2172ccc336c3 Mon Sep 17 00:00:00 2001
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From: Mark Brown <broonie@kernel.org>
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Date: Tue, 23 Jan 2024 23:33:07 +0000
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Subject: [PATCH] thermal/drivers/sun8i: Don't fail probe due to zone
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registration failure
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Currently the sun8i thermal driver will fail to probe if any of the
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thermal zones it is registering fails to register with the thermal core.
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Since we currently do not define any trip points for the GPU thermal
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zones on at least A64 or H5 this means that we have no thermal support
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on these platforms:
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[ 1.698703] thermal_sys: Failed to find 'trips' node
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[ 1.698707] thermal_sys: Failed to find trip points for thermal-sensor id=1
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even though the main CPU thermal zone on both SoCs is fully configured.
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This does not seem ideal, while we may not be able to use all the zones
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it seems better to have those zones which are usable be operational.
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Instead just carry on registering zones if we get any non-deferral
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error, allowing use of those zones which are usable.
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This means that we also need to update the interrupt handler to not
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attempt to notify the core for events on zones which we have not
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registered, I didn't see an ability to mask individual interrupts and
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I would expect that interrupts would still be indicated in the ISR even
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if they were masked.
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Reviewed-by: Vasily Khoruzhick <anarsoul@gmail.com>
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Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
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Signed-off-by: Mark Brown <broonie@kernel.org>
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Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
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Link: https://lore.kernel.org/r/20240123-thermal-sun8i-registration-v3-1-3e5771b1bbdd@kernel.org
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---
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drivers/thermal/sun8i_thermal.c | 16 ++++++++++++++--
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1 file changed, 14 insertions(+), 2 deletions(-)
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--- a/drivers/thermal/sun8i_thermal.c
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+++ b/drivers/thermal/sun8i_thermal.c
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@@ -195,6 +195,9 @@ static irqreturn_t sun8i_irq_thread(int
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int i;
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for_each_set_bit(i, &irq_bitmap, tmdev->chip->sensor_num) {
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+ /* We allow some zones to not register. */
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+ if (IS_ERR(tmdev->sensor[i].tzd))
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+ continue;
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thermal_zone_device_update(tmdev->sensor[i].tzd,
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THERMAL_EVENT_UNSPECIFIED);
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}
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@@ -531,8 +534,17 @@ static int sun8i_ths_register(struct ths
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i,
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&tmdev->sensor[i],
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&ths_ops);
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- if (IS_ERR(tmdev->sensor[i].tzd))
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- return PTR_ERR(tmdev->sensor[i].tzd);
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+
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+ /*
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+ * If an individual zone fails to register for reasons
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+ * other than probe deferral (eg, a bad DT) then carry
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+ * on, other zones might register successfully.
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+ */
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+ if (IS_ERR(tmdev->sensor[i].tzd)) {
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+ if (PTR_ERR(tmdev->sensor[i].tzd) == -EPROBE_DEFER)
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+ return PTR_ERR(tmdev->sensor[i].tzd);
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+ continue;
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+ }
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devm_thermal_add_hwmon_sysfs(tmdev->dev, tmdev->sensor[i].tzd);
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}
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