[PATCH] i2c: exynos5: Properly use the "noirq" variants of suspend/resume
khilman at linaro.org
Thu Jun 19 11:43:11 PDT 2014
Doug Anderson <dianders at chromium.org> writes:
> The original code for the exynos i2c controller registered for the
> "noirq" variants. However during review feedback it was moved to
> SIMPLE_DEV_PM_OPS without anyone noticing that it meant we were no
> longer actually "noirq" (despite functions named
> exynos5_i2c_suspend_noirq and exynos5_i2c_resume_noirq).
> i2c controllers that might have wakeup sources on them seem to need to
> resume at noirq time so that the individual drivers can actually read
> the i2c bus to handle their wakeup.
I suspect usage of the noirq variants pre-dates the existence of the
late/early callbacks in the PM core, but based on the description above,
I suspect what you actually want is the late/early callbacks.
More information about the linux-arm-kernel