linux-kernel - Re: [PATCH v2 08/10] MIPS: SGI-IP27: use generic PCI driver

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Date:   Fri, 22 Feb 2019 06:46:29 -0800
From:   Christoph Hellwig <hch@...radead.org>
To:     Thomas Bogendoerfer <tbogendoerfer@...e.de>
Cc:     Ralf Baechle <ralf@...ux-mips.org>,
        Paul Burton <paul.burton@...s.com>,
        James Hogan <jhogan@...nel.org>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-pci@...r.kernel.org
Subject: Re: [PATCH v2 08/10] MIPS: SGI-IP27: use generic PCI driver

> diff --git a/arch/mips/include/asm/dma-direct.h b/arch/mips/include/asm/dma-direct.h
> index b5c240806e1b..bd11e7934df1 100644
> --- a/arch/mips/include/asm/dma-direct.h
> +++ b/arch/mips/include/asm/dma-direct.h
> @@ -2,6 +2,8 @@
>  #ifndef _MIPS_DMA_DIRECT_H
>  #define _MIPS_DMA_DIRECT_H 1
>  
> +#include <dma-direct.h>
> +
>  static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
>  {
>  	if (!dev->dma_mask)

How is your mach dma-direct.h scheme going to work, given that
we already have non-inline declarations of __phys_to_dma / __dma_to_phys
in this file?

Also this really should go into a separate commit, and we should either
have all of these functions inline or none.  Having all of them out
of line seemed a lot saner to me to avoid all the mach header mess.

Also there seem to be a lot of randomw whitespace / brace cleanups
in this patch.  Shouldn't those be split out as well?