linux-kernel - Re: [PATCH] microblaze/PCI: Remove stale pcibios_align

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Date:   Tue, 21 Aug 2018 08:24:53 +0200
From:   Michal Simek <monstr@...str.eu>
To:     Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        linux-kernel@...r.kernel.org
Cc:     linux-pci@...r.kernel.org, Palmer Dabbelt <palmer@...belt.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Bharat Kumar Gogada <bharatku@...inx.com>
Subject: Re: [PATCH] microblaze/PCI: Remove stale pcibios_align_resource()
 comment

On 20.8.2018 11:47, Lorenzo Pieralisi wrote:
> commit 01cf9d524ff0 ("microblaze/PCI: Support generic Xilinx AXI PCIe Host
> Bridge IP driver")
> 
> and
> 
> commit ecf677c8dcaa ("PCI: Add a generic weak pcibios_align_resource()")
> 
> first patched then removed pcibios_align_resource() from the microblaze
> architecture code but failed to remove the comment that was added to
> it.
> 
> Remove it since it has now become stale and it is quite confusing.
> 
> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@....com>
> Cc: Palmer Dabbelt <palmer@...belt.com>
> Cc: Bjorn Helgaas <bhelgaas@...gle.com>
> Cc: Bharat Kumar Gogada <bharatku@...inx.com>
> Cc: Michal Simek <monstr@...str.eu>
> ---
>  arch/microblaze/pci/pci-common.c | 13 -------------
>  1 file changed, 13 deletions(-)
> 
> diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
> index f34346d56095..2ffd171af8b6 100644
> --- a/arch/microblaze/pci/pci-common.c
> +++ b/arch/microblaze/pci/pci-common.c
> @@ -597,19 +597,6 @@ static void pcibios_fixup_resources(struct pci_dev *dev)
>  }
>  DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, pcibios_fixup_resources);
>  
> -/*
> - * We need to avoid collisions with `mirrored' VGA ports
> - * and other strange ISA hardware, so we always want the
> - * addresses to be allocated in the 0x000-0x0ff region
> - * modulo 0x400.
> - *
> - * Why? Because some silly external IO cards only decode
> - * the low 10 bits of the IO address. The 0x00-0xff region
> - * is reserved for motherboard devices that decode all 16
> - * bits, so it's ok to allocate at, say, 0x2800-0x28ff,
> - * but we want to try to avoid allocating at 0x2900-0x2bff
> - * which might have be mirrored at 0x0100-0x03ff..
> - */
>  int pcibios_add_device(struct pci_dev *dev)
>  {
>  	dev->irq = of_irq_parse_and_map_pci(dev, 0, 0);
> 

Applied.
M

-- 
Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel - Xilinx Microblaze
Maintainer of Linux kernel - Xilinx Zynq ARM and ZynqMP ARM64 SoCs
U-Boot custodian - Xilinx Microblaze/Zynq/ZynqMP SoCs




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