linux-kernel - Re: [patch 04/39] genirq/msi: Use MSI_DESC_ALL in msi_add_simple_msi

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Message-ID: <Y3UL6t5FCdCOIxaS@a4bf019067fa.jf.intel.com>
Date:   Wed, 16 Nov 2022 08:12:26 -0800
From:   Ashok Raj <ashok.raj@...el.com>
To:     Thomas Gleixner <tglx@...utronix.de>
CC:     LKML <linux-kernel@...r.kernel.org>, <x86@...nel.org>,
        Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
        <linux-pci@...r.kernel.org>, Bjorn Helgaas <bhelgaas@...gle.com>,
        "Lorenzo Pieralisi" <lorenzo.pieralisi@....com>,
        Marc Zyngier <maz@...nel.org>,
        "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
        Jason Gunthorpe <jgg@...lanox.com>,
        Dave Jiang <dave.jiang@...el.com>,
        Alex Williamson <alex.williamson@...hat.com>,
        Kevin Tian <kevin.tian@...el.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Logan Gunthorpe <logang@...tatee.com>,
        Jon Mason <jdmason@...zu.us>, Allen Hubbe <allenbh@...il.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        <linuxppc-dev@...ts.ozlabs.org>,
        "Ahmed S. Darwish" <darwi@...utronix.de>,
        Reinette Chatre <reinette.chatre@...el.com>,
        Ashok Raj <ashok.raj@...el.com>
Subject: Re: [patch 04/39] genirq/msi: Use MSI_DESC_ALL in
 msi_add_simple_msi_descs()

On Fri, Nov 11, 2022 at 02:54:20PM +0100, Thomas Gleixner wrote:
> There are no associated MSI descriptors in the requested range when the MSI
> descriptor allocation fails. Use MSI_DESC_ALL as the filter which prepares
> the next step to get rid of the filter for freeing.
> 
> Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
> ---
>  kernel/irq/msi.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> --- a/kernel/irq/msi.c
> +++ b/kernel/irq/msi.c
> @@ -120,7 +120,7 @@ static int msi_add_simple_msi_descs(stru
>  fail_mem:
>  	ret = -ENOMEM;
>  fail:
> -	msi_free_msi_descs_range(dev, MSI_DESC_NOTASSOCIATED, index, last);
> +	msi_free_msi_descs_range(dev, MSI_DESC_ALL, index, last);
>  	return ret;
>  }
>  
> 
Reviewed-by: Ashok Raj <ashok.raj@...el.com>