linux-kernel - Re: [PATCH] PCI: dwc: Change size to u64 for EP outbound iATU

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Message-ID: <20201223203821.GA320232@bjorn-Precision-5520>
Date:   Wed, 23 Dec 2020 14:38:21 -0600
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Shradha Todi <shradha.t@...sung.com>
Cc:     linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
        jingoohan1@...il.com, gustavo.pimentel@...opsys.com,
        lorenzo.pieralisi@....com, robh@...nel.org, bhelgaas@...gle.com,
        pankaj.dubey@...sung.com
Subject: Re: [PATCH] PCI: dwc: Change size to u64 for EP outbound iATU

On Fri, Dec 18, 2020 at 09:04:08PM +0530, Shradha Todi wrote:
> Since outbound iATU permits size to be greater than
> 4GB for which the support is also available, allow
> EP function to send u64 size instead of truncating
> to u32.

Please wrap your commit messages so they use more of an 80-column
window.  I use "set textwidth=75" for vim to account for git log
indenting by 4 characters.

I know 80 isn't a magic width, but it's the convention in drivers/pci.

This also affects other patches from you, e.g., "PCI: dwc: Add upper
limit address for outbound iATU".

> Signed-off-by: Shradha Todi <shradha.t@...sung.com>
> ---
>  drivers/pci/controller/dwc/pcie-designware.c | 2 +-
>  drivers/pci/controller/dwc/pcie-designware.h | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c
> index 7eba3b2..6298212 100644
> --- a/drivers/pci/controller/dwc/pcie-designware.c
> +++ b/drivers/pci/controller/dwc/pcie-designware.c
> @@ -325,7 +325,7 @@ void dw_pcie_prog_outbound_atu(struct dw_pcie *pci, int index, int type,
>  
>  void dw_pcie_prog_ep_outbound_atu(struct dw_pcie *pci, u8 func_no, int index,
>  				  int type, u64 cpu_addr, u64 pci_addr,
> -				  u32 size)
> +				  u64 size)
>  {
>  	__dw_pcie_prog_outbound_atu(pci, func_no, index, type,
>  				    cpu_addr, pci_addr, size);
> diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
> index 28b72fb..bb33f28 100644
> --- a/drivers/pci/controller/dwc/pcie-designware.h
> +++ b/drivers/pci/controller/dwc/pcie-designware.h
> @@ -307,7 +307,7 @@ void dw_pcie_prog_outbound_atu(struct dw_pcie *pci, int index,
>  			       u64 size);
>  void dw_pcie_prog_ep_outbound_atu(struct dw_pcie *pci, u8 func_no, int index,
>  				  int type, u64 cpu_addr, u64 pci_addr,
> -				  u32 size);
> +				  u64 size);
>  int dw_pcie_prog_inbound_atu(struct dw_pcie *pci, u8 func_no, int index,
>  			     int bar, u64 cpu_addr,
>  			     enum dw_pcie_as_type as_type);
> -- 
> 2.7.4
>