linux-kernel - Re: [PATCH 2/2] PCI/MSI: Remove arch_msi_check

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Date:	Thu, 17 Jul 2014 12:22:52 +0200
From:	Alexander Gordeev <agordeev@...hat.com>
To:	Bjorn Helgaas <bhelgaas@...gle.com>
Cc:	linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
	linux-pci@...r.kernel.org
Subject: Re: [PATCH 2/2] PCI/MSI: Remove arch_msi_check_device()

On Wed, Jul 16, 2014 at 04:20:24PM -0600, Bjorn Helgaas wrote:
> > @@ -809,22 +799,23 @@ out_free:
> >  }
> >  
> >  /**
> > - * pci_msi_check_device - check whether MSI may be enabled on a device
> > + * msi_check_device - check whether MSI may be enabled on a device
> >   * @dev: pointer to the pci_dev data structure of MSI device function
> >   * @nvec: how many MSIs have been requested ?
> > - * @type: are we checking for MSI or MSI-X ?
> >   *
> >   * Look at global flags, the device itself, and its parent buses
> >   * to determine if MSI/-X are supported for the device. If MSI/-X is
> >   * supported return 0, else return an error code.
> >   **/
> > -static int pci_msi_check_device(struct pci_dev *dev, int nvec, int type)
> > +static int msi_check_device(struct pci_dev *dev, int nvec)
> 
> I think "check_device" is a terrible name because it really doesn't
> give a clue about what it's doing or what the return value means.
> Since you're removing the external usage (arch_msi_check_device) and
> this one is static, this would be a good time to fix it.  Maybe
> "pci_msi_supported()" or something?

What about pci_can_enable_msi() or pci_msi_can_enable() or msi_can_enable()?

> I *love* the idea of getting rid of this much code!
> 
> Bjorn

-- 
Regards,
Alexander Gordeev
agordeev@...hat.com
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