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8cb4373141
bad math: it does not handle page-boundary conditions, and will not end up mapping all of the requested addresses. This will cause a panic: page fault during probe on some systems. I have a machine that will panic every time (when using the dpt driver) on kernel probe when there are 5 drives installed. When there are 4 drives, it is fine. Fix is to always allocate/deallocate an extra page. There is also a bonus splx() fix on an early error return. Submitted by: Mark J. Taylor <mtaylor@cybernet.com> PR: 9367