tree 393b48096bb42204690748a63ddf3d91e95e82be
parent c0a0758034c655a78f307588895e63a5d4615abd
author Shawn McCarney <shawnmm@us.ibm.com> 1636097315 -0500
committer Shawn McCarney <shawnmm@us.ibm.com> 1636423644 -0600

Add retry support to I2CInterface

Enhance the I2CInterface class hierarchy to support retrying failed I2C
operations.

Add an optional parameter to i2c::create() to specify the maximum number
of retries to perform for an I2C operation.  Default to 0 retries so
that existing code will not be affected.

Testing:
* Tested each modified function
  * When I2C operation succeeds
  * When I2C operation fails
    * When no retries are done
    * When retries are done
      * When retried operation succeeds
      * When retried operation fails
* See complete test plan at
  https://gist.github.com/smccarney/8d203a40d9984402ac495dc3d689c12d

Signed-off-by: Shawn McCarney <shawnmm@us.ibm.com>
Change-Id: I2b0e782e5caaafa9908ef5625687377b959b38ff