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Pavel Pisa authored
The loop is mandatory when edge triggered interrupts are used. It is necessary to achieve state when all enabled interrupts are served and cleared or disabled and actual IRQ pin or MSI request is inactive. Some more cleanup to access chip only through routines and register description found in ctu_can_fd_hw.h and ctu_can_fd_regs.h. Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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