In the sysfs i2cDevice implementation, use an ioctl to get the adapter
functionality mask. Prefer SMBus block I/O but if it's not available,
perform read/write calls directly on the file descriptor.
Improve Wiichuck error handling. Add a 1 ms delay between I/O operations
to the Wiichuck; this dramatically improves reliability.
Signed-off-by: Hrishikesh Tapaswi <hrishikesh195@yahoo.com>
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