linux-kernel - Re: [PATCH 18/28] ia64: remove CONFIG

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Date:   Tue, 13 Aug 2019 21:07:12 +0000
From:   "Vaden, Tom (HPE Server OS Architecture)" <tom.vaden@....com>
To:     Christoph Hellwig <hch@....de>, Tony Luck <tony.luck@...el.com>,
        "Fenghua Yu" <fenghua.yu@...el.com>,
        "Travis, Mike" <mike.travis@....com>,
        "Sivanich, Dimitri" <dimitri.sivanich@....com>
CC:     Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "linux-ia64@...r.kernel.org" <linux-ia64@...r.kernel.org>,
        "linux-ide@...r.kernel.org" <linux-ide@...r.kernel.org>,
        "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 18/28] ia64: remove CONFIG_PCI ifdefs



On 8/13/19 3:25 AM, Christoph Hellwig wrote:
> Now that hpsim support is gone, CONFIG_PCI is forced on for ia64, and
> we can remove a few ifdefs for it.
> 
> Signed-off-by: Christoph Hellwig <hch@....de>

Okay to remove hpsim support
Acked-by: Tom Vaden <tom.vaden@....com>

> ---
>   arch/ia64/Makefile              |  2 +-
>   arch/ia64/hp/common/sba_iommu.c | 10 +---------
>   arch/ia64/include/asm/dma.h     |  6 +-----
>   arch/ia64/kernel/sys_ia64.c     | 18 ------------------
>   arch/ia64/mm/init.c             |  2 --
>   5 files changed, 3 insertions(+), 35 deletions(-)
> 
> diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile
> index 8b866fc1f9cb..c06802799659 100644
> --- a/arch/ia64/Makefile
> +++ b/arch/ia64/Makefile
> @@ -57,7 +57,7 @@ core-$(CONFIG_IA64_HP_ZX1)	+= arch/ia64/dig/
>   core-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += arch/ia64/dig/
>   core-$(CONFIG_IA64_SGI_UV)	+= arch/ia64/uv/
>   
> -drivers-$(CONFIG_PCI)		+= arch/ia64/pci/
> +drivers-y			+= arch/ia64/pci/
>   drivers-$(CONFIG_IA64_HP_ZX1)	+= arch/ia64/hp/common/ arch/ia64/hp/zx1/
>   drivers-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += arch/ia64/hp/common/ arch/ia64/hp/zx1/
>   drivers-$(CONFIG_IA64_GENERIC)	+= arch/ia64/hp/common/ arch/ia64/hp/zx1/ arch/ia64/uv/
> diff --git a/arch/ia64/hp/common/sba_iommu.c b/arch/ia64/hp/common/sba_iommu.c
> index 3d24cc43385b..18321ce8bfa0 100644
> --- a/arch/ia64/hp/common/sba_iommu.c
> +++ b/arch/ia64/hp/common/sba_iommu.c
> @@ -251,12 +251,8 @@ static SBA_INLINE void sba_free_range(struct ioc *, dma_addr_t, size_t);
>   static u64 prefetch_spill_page;
>   #endif
>   
> -#ifdef CONFIG_PCI
> -# define GET_IOC(dev)	((dev_is_pci(dev))						\
> +#define GET_IOC(dev)	((dev_is_pci(dev))						\
>   			 ? ((struct ioc *) PCI_CONTROLLER(to_pci_dev(dev))->iommu) : NULL)
> -#else
> -# define GET_IOC(dev)	NULL
> -#endif
>   
>   /*
>   ** DMA_CHUNK_SIZE is used by the SCSI mid-layer to break up
> @@ -1741,9 +1737,7 @@ ioc_sac_init(struct ioc *ioc)
>   	controller->iommu = ioc;
>   	sac->sysdata = controller;
>   	sac->dma_mask = 0xFFFFFFFFUL;
> -#ifdef CONFIG_PCI
>   	sac->dev.bus = &pci_bus_type;
> -#endif
>   	ioc->sac_only_dev = sac;
>   }
>   
> @@ -2121,13 +2115,11 @@ sba_init(void)
>   	}
>   #endif
>   
> -#ifdef CONFIG_PCI
>   	{
>   		struct pci_bus *b = NULL;
>   		while ((b = pci_find_next_bus(b)) != NULL)
>   			sba_connect_bus(b);
>   	}
> -#endif
>   
>   #ifdef CONFIG_PROC_FS
>   	ioc_proc_init();
> diff --git a/arch/ia64/include/asm/dma.h b/arch/ia64/include/asm/dma.h
> index 23604d6a2cb2..59625e9c1f9c 100644
> --- a/arch/ia64/include/asm/dma.h
> +++ b/arch/ia64/include/asm/dma.h
> @@ -12,11 +12,7 @@
>   
>   extern unsigned long MAX_DMA_ADDRESS;
>   
> -#ifdef CONFIG_PCI
> -  extern int isa_dma_bridge_buggy;
> -#else
> -# define isa_dma_bridge_buggy 	(0)
> -#endif
> +extern int isa_dma_bridge_buggy;
>   
>   #define free_dma(x)
>   
> diff --git a/arch/ia64/kernel/sys_ia64.c b/arch/ia64/kernel/sys_ia64.c
> index 9ebe1d633abc..e14db25146c2 100644
> --- a/arch/ia64/kernel/sys_ia64.c
> +++ b/arch/ia64/kernel/sys_ia64.c
> @@ -166,21 +166,3 @@ ia64_mremap (unsigned long addr, unsigned long old_len, unsigned long new_len, u
>   		force_successful_syscall_return();
>   	return addr;
>   }
> -
> -#ifndef CONFIG_PCI
> -
> -asmlinkage long
> -sys_pciconfig_read (unsigned long bus, unsigned long dfn, unsigned long off, unsigned long len,
> -		    void *buf)
> -{
> -	return -ENOSYS;
> -}
> -
> -asmlinkage long
> -sys_pciconfig_write (unsigned long bus, unsigned long dfn, unsigned long off, unsigned long len,
> -		     void *buf)
> -{
> -	return -ENOSYS;
> -}
> -
> -#endif /* CONFIG_PCI */
> diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
> index aae75fd7b810..9a4a16439900 100644
> --- a/arch/ia64/mm/init.c
> +++ b/arch/ia64/mm/init.c
> @@ -632,14 +632,12 @@ mem_init (void)
>   	BUG_ON(PTRS_PER_PMD * sizeof(pmd_t) != PAGE_SIZE);
>   	BUG_ON(PTRS_PER_PTE * sizeof(pte_t) != PAGE_SIZE);
>   
> -#ifdef CONFIG_PCI
>   	/*
>   	 * This needs to be called _after_ the command line has been parsed but _before_
>   	 * any drivers that may need the PCI DMA interface are initialized or bootmem has
>   	 * been freed.
>   	 */
>   	platform_dma_init();
> -#endif
>   
>   #ifdef CONFIG_FLATMEM
>   	BUG_ON(!mem_map);
>