linux-kernel - Re: [PATCH] PCI: mediatek: Remove the usage of virt_to

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Message-ID: <20250201162453.rwnd7igaiwnngdlb@thinkpad>
Date: Sat, 1 Feb 2025 21:54:53 +0530
From: "manivannan.sadhasivam@...aro.org" <manivannan.sadhasivam@...aro.org>
To: Jianjun Wang (王建军) <Jianjun.Wang@...iatek.com>
Cc: "linux-mediatek@...ts.infradead.org" <linux-mediatek@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"robh@...nel.org" <robh@...nel.org>, "kw@...ux.com" <kw@...ux.com>,
	"linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>,
	"matthias.bgg@...il.com" <matthias.bgg@...il.com>,
	"bhelgaas@...gle.com" <bhelgaas@...gle.com>,
	"lpieralisi@...nel.org" <lpieralisi@...nel.org>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	Ryder Lee <Ryder.Lee@...iatek.com>
Subject: Re: [PATCH] PCI: mediatek: Remove the usage of virt_to_phys

On Thu, Jan 23, 2025 at 08:11:19AM +0000, Jianjun Wang (王建军) wrote:
> On Wed, 2025-01-15 at 23:01 +0530, Manivannan Sadhasivam wrote:
> > External email : Please do not click links or open attachments until
> > you have verified the sender or the content.
> > 
> > 
> > On Tue, Jan 07, 2025 at 01:20:58PM +0800, Jianjun Wang wrote:
> > > Remove the usage of virt_to_phys, as it will cause sparse warnings
> > > when
> > > building on some platforms.
> > > 
> > 
> > Strange. What are those warnings and platforms?
> 
> There are some warning messages when building tests with different
> configs on different platforms (e.g., allmodconfig.arm,
> allmodconfig.i386, allmodconfig.mips, etc.):
> 
> pcie-mediatek.c:399:40: sparse: warning: incorrect type in argument 1
> (different address spaces)
> pcie-mediatek.c:399:40: sparse:    expected void const volatile *x
> pcie-mediatek.c:399:40: sparse:    got void [noderef] __iomem *
> pcie-mediatek.c:515:44: sparse: warning: incorrect type in argument 1
> (different address spaces)
> pcie-mediatek.c:515:44: sparse:    expected void const volatile *x
> pcie-mediatek.c:515:44: sparse:    got void [noderef] __iomem *
> 

This need to be added to the patch description.

- Mani

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