i2c: rcar: remove spinlock
We make sure to reinit the HW in the timeout case; then we know that interrupts are always disabled in the sections protected by the spinlock. Thus, we can simply remove it which is a preparation for further refactoring. While here, rename the timeout variable to time_left which is way more readable. Signed-off-by: NWolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: NWolfram Sang <wsa@the-dreams.de>
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