Changeset 10506:0d4e2892ee6a
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mem: dram ctrl: correct errors due to busBusyUntil variable
The busBusyUntil is unsigned and is initialised to 0, but at places
a value greater than 0 is subtracted from the variable, making its value
highly positive.  This patch checks that this would not be happen before
performing the subtraction.  Another possible way could be to change the
initialisation of busBusyUntil.