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Message-ID: <CAK8P3a0LXzyC1y4QapdjvtC2WRu8hU_0hENzZrz14ufoVP3ceQ@mail.gmail.com> Date: Sat, 25 Sep 2021 19:33:06 +0200 From: Arnd Bergmann <arnd@...db.de> To: Sergio Paracuellos <sergio.paracuellos@...il.com> Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de>, Rob Herring <robh@...nel.org>, Arnd Bergmann <arnd@...db.de>, Catalin Marinas <catalin.marinas@....com>, Liviu Dudau <Liviu.Dudau@....com>, Bjorn Helgaas <bhelgaas@...gle.com>, Matthias Brugger <matthias.bgg@...il.com>, gregkh <gregkh@...uxfoundation.org>, "open list:BROADCOM NVRAM DRIVER" <linux-mips@...r.kernel.org>, linux-pci <linux-pci@...r.kernel.org>, linux-staging@...ts.linux.dev, neil@...wn.name, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: [PATCH 6/6] staging: mt7621-pci: properly adjust base address for the IO window On Fri, Sep 24, 2021 at 11:11 PM Sergio Paracuellos <sergio.paracuellos@...il.com> wrote: > > The value to adjust in the bridge register RALINK_PCI_IOBASE must take into > account the raw value from DT, not only the translated linux port number. > As long as io_offset is zero, the two are the same, but if you were to use > multiple host bridge in the system, or pick a different bus address in DT, > you can have a nonzero io_offset. At this means to take into account the > bus address which is used to calculate this offset, substracting it from > the IO resource start address. > > Signed-off-by: Sergio Paracuellos <sergio.paracuellos@...il.com> Acked-by: Arnd Bergmann <arnd@...db.de>
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