tree 3158932f2d015a482ad4a5bca046f51bc5907b0d
parent 3eca2520e459cc17be62c20400c385d15a72bff9
author Brad Bishop <bradleyb@fuzziesquirrel.com> 1504846018 -0400
committer Brad Bishop <bradleyb@fuzziesquirrel.com> 1504901180 -0400

sysfs IO enhancements

Add retries for some sysfs IO errors:
 EIO: Tolerate intermittant device or bus failures.
 ETIMEDOUT: Tolerate intermittant timeouts.
 EAGAIN: Tolerate drivers that do not block.
 ENXIO: Tolerate momentarily unplugged devices on busses that don't
    support hotplug.
 EBADMSG: Tolerate CRC errors.

Flush stdio buffers after writes.
Remove redundant retry and delay constants.

Resolves: openbmc/openbmc#2262

Change-Id: I2104139bf7ced96bb10f7450b42ca36e61c84287
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>