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regulator: core: don't ignore errors from event forwarding setup

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Receiving and forwarding critical supply events seems like they're
important information and we shouldn't ignore errors occurring during
registration for such events.

With this change the supply is unset on event registration failure,
allowing us to potentially retry another time.

Fixes: 433e294c3c ("regulator: core: forward undervoltage events downstream by default")
Signed-off-by: André Draszik <andre.draszik@linaro.org>
Link: https://patch.msgid.link/20260109-regulators-defer-v2-6-1a25dc968e60@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
André Draszik 2026-01-09 08:38:42 +00:00 committed by Mark Brown
parent bdbdc4b398
commit e23c0a59da
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1 changed files with 12 additions and 1 deletions
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13
drivers/regulator/core.c
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@ -2273,10 +2273,21 @@ static int regulator_resolve_supply(struct regulator_dev *rdev)
* under-voltage.
*/
ret = register_regulator_event_forwarding(rdev);
if (ret < 0)
if (ret < 0) {
struct regulator *supply;
rdev_warn(rdev, "Failed to register event forwarding: %pe\n",
ERR_PTR(ret));
supply = rdev->supply;
rdev->supply = NULL;
regulator_unlock_two(rdev, supply->rdev, &ww_ctx);
regulator_put(supply);
goto out;
}
regulator_unlock_two(rdev, r, &ww_ctx);
/* rdev->supply was created in set_supply() */