Subject: Re: [RFC PATCH v0.2] PCI: Add support for tango PCIe host bridge
To: Marc Zyngier <marc.zyngier@arm.com>
Cc: Bjorn Helgaas <helgaas@kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Robin Murphy <robin.murphy@arm.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
        Liviu Dudau <liviu.dudau@arm.com>,
        David Laight <david.laight@aculab.com>,
        linux-pci <linux-pci@vger.kernel.org>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>,
        Thibaud Cornic <thibaud_cornic@sigmadesigns.com>,
        Phuong Nguyen <phuong_nguyen@sigmadesigns.com>,
        LKML <linux-kernel@vger.kernel.org>
References: <91db1f47-3024-9712-309a-fb4b21e42028@free.fr>
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 <310db9dd-7db6-2106-2e53-f0083b2d3758@free.fr>
 <9fffedd4-6292-b662-a588-a68fe7380af6@free.fr>
 <6e847686-43c6-11e9-6782-dec0fe81a58e@arm.com>
From: Mason <slash.tmp@free.fr>
Message-ID: <9c65e647-8395-4467-53ca-c20ed374131b@free.fr>
Date: Mon, 27 Mar 2017 16:35:56 +0200
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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?

Regards.