linux-kernel - Re: [PATCH 1/6] msi: Kill msi_lookup

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Date:	Mon, 29 Jan 2007 09:01:11 +1100
From:	Paul Mackerras <paulus@...ba.org>
To:	ebiederm@...ssion.com (Eric W. Biederman)
Cc:	Greg Kroah-Hartman <greg@...ah.com>,
	Tony Luck <tony.luck@...el.com>,
	Grant Grundler <grundler@...isc-linux.org>,
	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	Kyle McMartin <kyle@...isc-linux.org>, linuxppc-dev@...abs.org,
	Brice Goglin <brice@...i.com>, shaohua.li@...el.com,
	linux-pci@...ey.karlin.mff.cuni.cz,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH 1/6] msi: Kill msi_lookup_irq

Eric W. Biederman writes:

> @@ -693,15 +664,14 @@ int pci_enable_msi(struct pci_dev* dev)
>  	if (!pos)
>  		return -EINVAL;
>  
> -	WARN_ON(!msi_lookup_irq(dev, PCI_CAP_ID_MSI));
> +	WARN_ON(!!dev->msi_enabled);

Minor nit: what's wrong with just WARN_ON(dev->msi_enabled) ?
Also here:

> @@ -836,16 +811,14 @@ int pci_enable_msix(struct pci_dev* dev, struct msix_entry *entries, int nvec)
>  				return -EINVAL;	/* duplicate entry */
>  		}
>  	}
> -	temp = dev->irq;
> -	WARN_ON(!msi_lookup_irq(dev, PCI_CAP_ID_MSIX));
> +	WARN_ON(!!dev->msix_enabled);

Paul.
-
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