i2c-bfin-twi: fix lost interrupts at high speeds
i2c event of next read/write byte may trigger before current int state is cleared in the interrupt handler. So, this should be done at the beginning of interrupt handler to avoid losing new i2c events. Signed-off-by: NSonic Zhang <sonic.zhang@analog.com> Signed-off-by: NMike Frysinger <vapier@gentoo.org> Signed-off-by: NBen Dooks <ben-linux@fluff.org>
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