i2c: tegra: Fix suspending in active runtime PM state

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I noticed that sometime I2C clock is kept enabled during suspend-resume.
This happens because runtime PM defers dynamic suspension and thus it may
happen that runtime PM is in active state when system enters into suspend.
In particular I2C controller that is used for CPU's DVFS is often kept ON
during suspend because CPU's voltage scaling happens quite often.

Fixes: 8ebf15e9c8 ("i2c: tegra: Move suspend handling to NOIRQ phase")
Cc: <stable@vger.kernel.org> # v5.4+
Tested-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

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Dmitry Osipenko 2020-01-14 04:34:35 +03:00 • committed by Wolfram Sang

parent b3a987b026

commit 9f42de8d4e

1 changed files with 9 additions and 0 deletions

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drivers/i2c/busses/i2c-tegra.c

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