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regulator: workaround self-referent regulators 

Workaround regulators whose supply name happens to be the same as its
own name. This fixes boards that used to work before the early supply
resolving was removed. The error message is left in place so that
offending drivers can be detected.

Fixes: aea6cb9970 ("regulator: resolve supply after creating regulator")
Cc: stable@vger.kernel.org
Reported-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Tested-by: Ahmad Fatoum <a.fatoum@pengutronix.de> # stpmic1
Link: https://lore.kernel.org/r/d703acde2a93100c3c7a81059d716c50ad1b1f52.1605226675.git.mirq-linux@rere.qmqm.pl
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Michał Mirosław 2020-11-13 01:20:28 +01:00 committed by Mark Brown
parent 4b639e254d
commit f5c042b23f
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 4 additions and 1 deletions
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5
drivers/regulator/core.c
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@ -1844,7 +1844,10 @@ static int regulator_resolve_supply(struct regulator_dev *rdev)
if (r == rdev) {
dev_err(dev, "Supply for %s (%s) resolved to itself\n",
rdev->desc->name, rdev->supply_name);
return -EINVAL;
if (!have_full_constraints())
return -EINVAL;
r = dummy_regulator_rdev;
get_device(&r->dev);
}
/*