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| author |   Dmitry Osipenko <digetx@gmail.com> | 2020-07-09 20:12:03 +0300 |
|---|---|---|
| committer |   Linus Walleij <linus.walleij@linaro.org> | 2020-07-16 10:50:40 +0200 |
| commit | e6827bc3faa4da29ddbf48f48d04e87ca7c1c3c7 (patch) | |
| tree | 99513e17a424bfa0f6cb2f0214d2316c4e984159 /tools/perf/scripts/python/exported-sql-viewer.py | |
| parent | gpio: max77620: Use irqchip template (diff) | |
| download | linux-dev-e6827bc3faa4da29ddbf48f48d04e87ca7c1c3c7.tar.xz linux-dev-e6827bc3faa4da29ddbf48f48d04e87ca7c1c3c7.zip | |
gpio: max77620: Initialize hardware state of interrupts
I noticed on Nexus 7 that after rebooting from downstream kernel to
upstream, the GPIO interrupt is triggering non-stop despite interrupts
being disabled for all of GPIOs. This happens because Nexus 7 uses a
soft-reboot, meaning that bootloader should take care of resetting
hardware, but the bootloader doesn't do it well. As a result, GPIO
interrupt may be left ON at a boot time. Let's mask all GPIO interrupts
at the driver's initialization time in order to resolve the issue.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Link: https://lore.kernel.org/r/20200709171203.12950-7-digetx@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
0 files changed, 0 insertions, 0 deletions