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

[Christian Mauderer]

On 01/04/2020 14:10, Sebastian Huber wrote:
> On 01/04/2020 14:09, Christian Mauderer wrote:
> 
>> 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.
> Both branches please.

Thanks. I pushed it.
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