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Re: [RFC PATCH v0.2] PCI: Add support for tango PCIe host bridge

From Thomas Gleixner <tglx@linutronix.de>
Newsgroups linux.kernel
Subject Re: [RFC PATCH v0.2] PCI: Add support for tango PCIe host bridge
Date 2017-03-27 16:50 +0200
Message-ID <tpE81-11f-7@gated-at.bofh.it> (permalink)
References (1 earlier) <tobUu-3mq-13@gated-at.bofh.it> <toepj-5id-5@gated-at.bofh.it> <tokEp-1ff-1@gated-at.bofh.it> <toC8j-5sk-51@gated-at.bofh.it> <tpDYm-XG-21@gated-at.bofh.it>
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On Mon, 27 Mar 2017, Mason wrote:
> On 24/03/2017 19:22, Marc Zyngier wrote:
> 
> > You cannot directly use a pointer to a u32 in any of the bitmap
> > operations. You need to copy the value to an unsigned long, and
> > apply the bitmap op on that.
> 
> On my platform, find_first_zero_bit() resolves to
> 
>   int _find_first_zero_bit_le(const void * p, unsigned size);
> 
> If the underlying implementation actually expects an unsigned long
> pointer, should the function prototype be changed?

Errm? Why are you worrying about the underlying implementations?

find_first_zero_bit() is what you are supposed to use in your code. And
that explicitely takes a unsigned long pointer.

Thanks,

	tglx

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Thread

[RFC PATCH v0.2] PCI: Add support for tango PCIe host bridge Mason <slash.tmp@free.fr> - 2017-03-23 14:10 +0100
  Re: [RFC PATCH v0.2] PCI: Add support for tango PCIe host bridge Marc Zyngier <marc.zyngier@arm.com> - 2017-03-23 15:30 +0100
    Re: [RFC PATCH v0.2] PCI: Add support for tango PCIe host bridge Mason <slash.tmp@free.fr> - 2017-03-23 18:10 +0100
      Re: [RFC PATCH v0.2] PCI: Add support for tango PCIe host bridge Mason <slash.tmp@free.fr> - 2017-03-24 00:50 +0100
        Re: [RFC PATCH v0.2] PCI: Add support for tango PCIe host bridge Marc Zyngier <marc.zyngier@arm.com> - 2017-03-24 19:30 +0100
          Re: [RFC PATCH v0.2] PCI: Add support for tango PCIe host bridge Mason <slash.tmp@free.fr> - 2017-03-27 16:40 +0200
            Re: [RFC PATCH v0.2] PCI: Add support for tango PCIe host bridge Thomas Gleixner <tglx@linutronix.de> - 2017-03-27 16:50 +0200
              Re: [RFC PATCH v0.2] PCI: Add support for tango PCIe host bridge Mason <slash.tmp@free.fr> - 2017-03-27 17:20 +0200
      Re: [RFC PATCH v0.2] PCI: Add support for tango PCIe host bridge Marc Zyngier <marc.zyngier@arm.com> - 2017-03-24 19:50 +0100
        Re: [RFC PATCH v0.2] PCI: Add support for tango PCIe host bridge Mason <slash.tmp@free.fr> - 2017-03-27 18:10 +0200
          Re: [RFC PATCH v0.2] PCI: Add support for tango PCIe host bridge Marc Zyngier <marc.zyngier@arm.com> - 2017-03-27 19:20 +0200
            Re: [RFC PATCH v0.2] PCI: Add support for tango PCIe host bridge Mason <slash.tmp@free.fr> - 2017-03-27 21:50 +0200
              Re: [RFC PATCH v0.2] PCI: Add support for tango PCIe host bridge Marc Zyngier <marc.zyngier@arm.com> - 2017-03-27 23:10 +0200
                Re: [RFC PATCH v0.2] PCI: Add support for tango PCIe host bridge Mason <slash.tmp@free.fr> - 2017-03-28 00:10 +0200
                Re: [RFC PATCH v0.2] PCI: Add support for tango PCIe host bridge Marc Zyngier <marc.zyngier@arm.com> - 2017-03-28 10:30 +0200
  Re: [RFC PATCH v0.2] PCI: Add support for tango PCIe host bridge Mason <slash.tmp@free.fr> - 2017-03-29 13:50 +0200
  Re: [RFC PATCH v0.2] PCI: Add support for tango PCIe host bridge Mason <slash.tmp@free.fr> - 2017-03-30 13:10 +0200

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