question on mips/kernel/setup.c

[Randy Dunlap <rdunlap@xxxxxxxxxxxxx>]

from commit 14ac09a65e19
Author: Christoph Hellwig <hch@xxxxxx>
Date:   Wed Feb 10 10:56:38 2021 +0100

    MIPS: refactor the runtime coherent vs noncoherent DMA indicators


Both of these command line options set 'dma_default_coherent' to true.

Is that correct or a typo?  Or it doesn't matter?
Thanks.


arch/mips/kernel/setup.c:

static int __init setcoherentio(char *str)
{
	dma_default_coherent = true;
	pr_info("Hardware DMA cache coherency (command line)\n");
	return 0;
}
early_param("coherentio", setcoherentio);

static int __init setnocoherentio(char *str)
{
	dma_default_coherent = true;
	pr_info("Software DMA cache coherency (command line)\n");
	return 0;
}
early_param("nocoherentio", setnocoherentio);

-- 
~Randy