[PATCH libbsd v2] mmcsd: Don't handle multiple hardware partitions.

[Christian Mauderer]

On 01/04/2020 11:55, Sebastian Huber wrote:
> On 01/04/2020 11:45, Christian Mauderer wrote:
>> The rtems_bsd_mmcsd_attach_worker acquired the bus without releasing it.
>> If a MMC device has multiple hardware partitions (like eMMC which
>> typically has at least one boot partition) the
>> rtems_bsd_mmcsd_attach_worker would try to acquire the bus multiple
>> times. This doesn't work.
>>
>> Doing it right would mean to acquire and release the bus for each
>> access which would have an performance impact. Beneath that it would
>> mean that partition switching has to be supported by the RTEMS code too.
>>
>> There is currently no known use case where the access would be
>> necessary. Therefore this patch prefers the performance and just avoids
>> all further hardware partitions.
> 
> Looks good.
> 

Should we apply it only to master or to 5-freebsd-12 too? The problem
affects both so I would suggest to apply it to both branches.

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