Hi!
In kernel often used constructions, similar to next:
if (get_cds(drv ? drv - 1 : default_drive) == NULL)
but for `default_drive' get_cds() always should be non-NULL, so this code
may be optimized:
if (drv && get_cds(drv - 1) == NULL)
Question: is there possible, that CDSp[default_drive].cdsFlags will be
changed or .cdsDpb will be cleared, but default_drive will not be changed?
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