linux-kernel - Re: [Pcihpd-discuss] [PATCH 26/34] PCI: add pci_try_set

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Date:	Wed, 11 Jul 2007 18:01:49 -0600
From:	Matthew Wilcox <matthew@....cx>
To:	Greg Kroah-Hartman <gregkh@...e.de>
Cc:	linux-pci@...ey.karlin.mff.cuni.cz,
	Randy Dunlap <randy.dunlap@...cle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	pcihpd-discuss@...ts.sourceforge.net, linux-kernel@...r.kernel.org,
	James.Smart@...lex.Com
Subject: Re: [Pcihpd-discuss] [PATCH 26/34] PCI: add pci_try_set_mwi

On Wed, Jul 11, 2007 at 04:31:40PM -0700, Greg Kroah-Hartman wrote:
> As suggested by Andrew, add pci_try_set_mwi(), which does not require
> return-value checking.

Seems like a daft suggestion.  What's wrong with just removing the
__must_check from pci_set_mwi()?  Did it find any bugs?

> --- a/drivers/scsi/lpfc/lpfc_init.c
> +++ b/drivers/scsi/lpfc/lpfc_init.c
> @@ -1578,10 +1578,7 @@ lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
>  	INIT_LIST_HEAD(&phba->fc_nodes);
>  
>  	pci_set_master(pdev);
> -	retval = pci_set_mwi(pdev);
> -	if (retval)
> -		dev_printk(KERN_WARNING, &pdev->dev,
> -			   "Warning: pci_set_mwi returned %d\n", retval);
> +	pci_try_set_mwi(pdev);

Why remove the warning?  Presumably people want to know if pci_set_mwi
failed.

-- 
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours.  We can't possibly take such
a retrograde step."
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