linux-kernel - RE: [PATCH RESEND v5 02/14] PCI: dwc: Fix inbound iATU entries out-of-bounds warning message

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Date:   Fri, 12 May 2023 09:55:52 +0000
From:   Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
To:     Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Cai Huoqing <cai.huoqing@...ux.dev>,
        Jingoo Han <jingoohan1@...il.com>,
        Gustavo Pimentel <gustavo.pimentel@...opsys.com>,
        Vinod Koul <vkoul@...nel.org>,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        Rob Herring <robh@...nel.org>,
        Manivannan Sadhasivam <mani@...nel.org>,
        Serge Semin <fancer.lancer@...il.com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>
CC:     Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Pavel Parkhomenko <Pavel.Parkhomenko@...kalelectronics.ru>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "dmaengine@...r.kernel.org" <dmaengine@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH RESEND v5 02/14] PCI: dwc: Fix inbound iATU entries
 out-of-bounds warning message

Hi Serge,

> From: Serge Semin, Sent: Friday, May 12, 2023 4:09 AM
> 
> The message is printed if the number of requested inbound iATU windows
> exceed the device capability. In that case the message should either refer
> to the "dma-ranges" DT property or to the DMA-ranges mapping. We suggest
> to use the later version as a counterpart to the just CPU-ranges mapping.
> In any case the current "Dma-ranges" phrase seems incorrect.
> 
> Suggested-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>

I'm not sure whether my review is useful or not, but anyway,

Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>

Best regards,
Yoshihiro Shimoda

> ---
>  drivers/pci/controller/dwc/pcie-designware-host.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
> index 9952057c8819..5718b4bb67f0 100644
> --- a/drivers/pci/controller/dwc/pcie-designware-host.c
> +++ b/drivers/pci/controller/dwc/pcie-designware-host.c
> @@ -723,7 +723,7 @@ static int dw_pcie_iatu_setup(struct dw_pcie_rp *pp)
>  	}
> 
>  	if (pci->num_ib_windows <= i)
> -		dev_warn(pci->dev, "Dma-ranges exceed inbound iATU size (%u)\n",
> +		dev_warn(pci->dev, "DMA-ranges exceed inbound iATU size (%u)\n",
>  			 pci->num_ib_windows);
> 
>  	return 0;
> --
> 2.40.0
>