linux-kernel - Re: [PATCH 2/4] MSI/x86: Support pci_enable_msi_block

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Date:	Tue, 3 Sep 2013 09:32:38 -0400
From:	Tejun Heo <tj@...nel.org>
To:	Alexander Gordeev <agordeev@...hat.com>
Cc:	linux-kernel@...r.kernel.org, x86@...nel.org,
	linux-pci@...r.kernel.org, linux-ide@...r.kernel.org,
	Ingo Molnar <mingo@...nel.org>, Joerg Roedel <joro@...tes.org>,
	Jan Beulich <JBeulich@...e.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>
Subject: Re: [PATCH 2/4] MSI/x86: Support pci_enable_msi_block_part()
 interface

On Mon, Sep 02, 2013 at 11:00:01AM +0200, Alexander Gordeev wrote:
> @@ -60,18 +60,18 @@ static int do_setup_msi_irqs(struct pci_dev *dev, int nvec)
>  	WARN_ON(msidesc->irq);
>  	WARN_ON(msidesc->msi_attrib.multiple);
>  	WARN_ON(msidesc->nvec_used);
> +	BUG_ON(nvec_mme != __roundup_pow_of_two(nvec_mme));

Wouldn't !is_power_of_2() be better?

Thanks.

-- 
tejun
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