Messages in this thread | | | Date | Sun, 1 Nov 2020 02:31:15 +0100 | From | Ondřej Jirman <> | Subject | Re: [BUG] Error applying setting, reverse things back on lot of devices |
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Hello Michał,
On Sat, Oct 24, 2020 at 01:53:07PM +0200, Michał Mirosław wrote: > On Fri, Oct 23, 2020 at 10:39:43PM +0200, Corentin Labbe wrote: > > On Fri, Oct 23, 2020 at 03:42:01PM +0200, Corentin Labbe wrote: > > > On Wed, Oct 21, 2020 at 08:31:49PM +0200, Corentin Labbe wrote: > > > > [ 5.796585] dcdc4: supplied by regulator-dummy > > > > [ 5.801647] vcc-dram: supplied by regulator-dummy > > > > [ 5.806470] vcc-gmac-phy: failed to get the current voltage: -EINVAL > > > > [ 5.812839] axp20x-regulator axp20x-regulator: Failed to register dc1sw > > > > [ 5.820291] axp20x-regulator: probe of axp20x-regulator failed with error -22 > > > > > > I have just saw thoses 3 lines which are probably the real problem. > > > I have started a new bisect with this error, but it is hitting the same "crash range" the first one. > > > > > > > I have bisected the problem to commit aea6cb99703e17019e025aa71643b4d3e0a24413 ("regulator: resolve supply after creating regulator") > > Reverting this fix my problem. > > Can you try the hack below? > > Best Regards, > Michał Mirosław > > diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c > index a4ffd71696da..9ad091f5f1ab 100644 > --- a/drivers/regulator/core.c > +++ b/drivers/regulator/core.c > @@ -1169,6 +1169,9 @@ static int machine_constraints_voltage(struct regulator_dev *rdev, > } > > if (current_uV < 0) { > + if (current_uV == -EINVAL && rdev->supply_name) > + return -EPROBE_DEFER; > + > rdev_err(rdev, > "failed to get the current voltage: %pe\n", > ERR_PTR(current_uV));
I did hit the same problem on sun8i-a83t-tbs-a711.dts tablet.
The patch helps on top of v5.9.2, and on linus/master.
regards, o.
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