linux-kernel - Re: [PATCH v2] xen-pciback: fix INTERRUPT_TYPE

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Message-ID: <20200323145522.GC24458@Air-de-Roger.citrite.net>
Date:   Mon, 23 Mar 2020 15:55:22 +0100
From:   Roger Pau Monné <roger.pau@...rix.com>
To:     Marek Marczykowski-Górecki 
        <marmarek@...isiblethingslab.com>
CC:     <xen-devel@...ts.xenproject.org>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Juergen Gross <jgross@...e.com>,
        "Stefano Stabellini" <sstabellini@...nel.org>,
        Simon Gaiser <simon@...isiblethingslab.com>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] xen-pciback: fix INTERRUPT_TYPE_* defines

On Fri, Mar 20, 2020 at 04:09:18AM +0100, Marek Marczykowski-Górecki wrote:
> xen_pcibk_get_interrupt_type() assumes INTERRUPT_TYPE_NONE being 0
> (initialize ret to 0 and return as INTERRUPT_TYPE_NONE).
> Fix the definition to make INTERRUPT_TYPE_NONE really 0, and also shift
> other values to not leave holes.
> But also, do not assume INTERRUPT_TYPE_NONE being 0 anymore to avoid
> similar confusions in the future.
> 
> Fixes: 476878e4b2be ("xen-pciback: optionally allow interrupt enable flag writes")
> Signed-off-by: Marek Marczykowski-Górecki <marmarek@...isiblethingslab.com>

Reviewed-by: Roger Pau Monné <roger.pau@...rix.com>

Thanks, Roger.