On Thu, Sep 15, 2016 at 11:03:24PM +0800, Baoquan He wrote:
> This enabling should have been done in normal kernel. It's unnecessary
> to enable it again in kdump kernel.
> 
> And clean up the function comments of init_device_table_dma.

Well, no. We don't want to make any assumptions on what the previous
kernel did and what it did not. The init_device_table_dma() code should
run anyway.

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