Michal Meloun dfb7360222 dwmmc: Calculate the maximum transaction length correctly.
We should reserve two descriptors (not MMC_SECTORS) for potentially
unaligned (so bounced) buffer fragments, one for the starting fragment
and one for the ending fragment.

Submitted by:	kjopek@gmail.com
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D30387
2021-10-08 09:21:03 +02:00
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