On Tuesday 23 October 2012 11:39 PM, Kevin Hilman wrote:
From: Kevin Hilman <[email protected]>
When debounce clocks are disabled, ensure that the banks
dbck_enable_mask is cleared also. Otherwise, context restore on
subsequent off-mode transition will restore previous value from the
shadow copies (bank->context.debounce*) leading to mismatch state
between driver state and hardware state.
This was discovered when board code was doing
gpio_request_one()
gpio_set_debounce()
gpio_free()
which was leaving the GPIO debounce settings in a confused state.
Then, enabling off mode causing bogus state to be restored, leaving
GPIO debounce enabled which then prevented the CORE powerdomain from
transitioning.
Reported-by: Paul Walmsley <[email protected]>
Cc: Igor Grinberg <[email protected]>
Signed-off-by: Kevin Hilman <[email protected]>
---
Acked-by: Santosh Shilimkar <[email protected]>
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