OrgACRN
/
acrn-kernel
mirror of https://github.com/projectacrn/acrn-kernel.git
1
0
Fork 0
Code Issues Releases Wiki Activity

regulator: Revert "Use driver_deferred_probe_timeout for regulator_init_complete_work" 

This reverts commit dca0b44957 ("regulator: Use
driver_deferred_probe_timeout for regulator_init_complete_work"),
as we ended up reverting the default deferred_probe_timeout
value back to zero, to preserve behavior with 5.6 we need to
decouple the regulator timeout which was previously 30 seconds.

This avoids breaking some systems that depend on the regulator
timeout but don't require the deferred probe timeout.

Cc: linux-pm@vger.kernel.org
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Saravana Kannan <saravanak@google.com>
Cc: Todd Kjos <tkjos@google.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Kevin Hilman <khilman@kernel.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Rob Herring <robh@kernel.org>
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Suggested-by: Mark Brown <broonie@kernel.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20200429172349.55979-1-john.stultz@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
John Stultz 2020-04-29 17:23:49 +00:00 committed by Greg Kroah-Hartman
parent 35a672363a
commit 2a15483b40
1 changed files with 11 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
drivers/regulator/core.c
View File

@ -5754,10 +5754,6 @@ static DECLARE_DELAYED_WORK(regulator_init_complete_work,
static int __init regulator_init_complete(void)
{
int delay = driver_deferred_probe_timeout;
if (delay < 0)
delay = 0;
/*
* Since DT doesn't provide an idiomatic mechanism for
* enabling full constraints and since it's much more natural
@ -5768,17 +5764,18 @@ static int __init regulator_init_complete(void)
has_full_constraints = true;
/*
* If driver_deferred_probe_timeout is set, we punt
* completion for that many seconds since systems like
* distros will load many drivers from userspace so consumers
* might not always be ready yet, this is particularly an
* issue with laptops where this might bounce the display off
* then on. Ideally we'd get a notification from userspace
* when this happens but we don't so just wait a bit and hope
* we waited long enough. It'd be better if we'd only do
* this on systems that need it.
* We punt completion for an arbitrary amount of time since
* systems like distros will load many drivers from userspace
* so consumers might not always be ready yet, this is
* particularly an issue with laptops where this might bounce
* the display off then on. Ideally we'd get a notification
* from userspace when this happens but we don't so just wait
* a bit and hope we waited long enough. It'd be better if
* we'd only do this on systems that need it, and a kernel
* command line option might be useful.
*/
schedule_delayed_work(&regulator_init_complete_work, delay * HZ);
schedule_delayed_work(&regulator_init_complete_work,
msecs_to_jiffies(30000));
return 0;
}