[Bug 1586] New: Add retries to SD card accesses

[bugzilla-daemon at rtems.org]

https://www.rtems.org/bugzilla/show_bug.cgi?id=1586

           Summary: Add retries to SD card accesses
           Product: RTEMS
           Version: HEAD
          Platform: All
        OS/Version: RTEMS
            Status: NEW
          Severity: enhancement
          Priority: P3
         Component: misc
        AssignedTo: joel.sherrill at oarcorp.com
        ReportedBy: arnout at mind.be
                CC: chrisj at rtems.org, sebastian.huber at embedded-brains.de


Created an attachment (id=815)
 --> (https://www.rtems.org/bugzilla/attachment.cgi?id=815)
Retry accesses to SD cards

+++ This bug was initially created as a clone of Bug #1578 +++

I have an SPI controller that sometimes breaks down, which results in IO errors
in the SD card driver (cfr. bug 1569).  Attached patch adds retries to the
accesses to the SD card (initialization and block requests).

The default retry value is 0, which reproduces the original behaviour.

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