linux-kernel - Re: [PATCH vringh 2/2] caif_virtio: Introduce caif over virtio

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Message-ID: <87ppzxi7be.fsf@rustcorp.com.au>
Date:	Tue, 19 Feb 2013 09:00:13 +1030
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	Sjur Brændeland <sjurbren@...il.com>
Cc:	"David S. Miller" <davem@...emloft.net>,
	Ohad Ben-Cohen <ohad@...ery.com>,
	Vikram ARV <vikram.arv@...ricsson.com>,
	Dmitry TARNYAGIN <dmitry.tarnyagin@...ricsson.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	"linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>,
	Erwan YVIN <erwan.yvin@...ricsson.com>,
	"virtualization\@lists.linux-foundation.org" 
	<virtualization@...ts.linux-foundation.org>,
	"netdev\@vger.kernel.org" <netdev@...r.kernel.org>,
	Ido Yariv <ido@...ery.com>, <mst@...hat.com>
Subject: Re: [PATCH vringh 2/2] caif_virtio: Introduce caif over virtio

Sjur Brændeland <sjurbren@...il.com> writes:

>> Sjur Brændeland <sjurbren@...il.com> writes:
>>> How about supporting struct vringh_kiov and struct kvec as well?
>>> I currently get the following complaints with my V2 patch-set:
>>>
>>> drivers/net/caif/caif_virtio.c:486:2: warning: passing argument 1 of
>>> ‘vringh_iov_init’ from incompatible pointer type [enabled by default]
>>
>> vringh_kiov_init()?  Did I miss something else?
>
> I get a warning for my useof vringh_iov_cleanup() in
> addition to the one above.
>
> How about adding kiov variants of  vringh_iov_cleanup()
> and vringh_iov_reset() as well?

Hmm, I have those here too (in the header):

+static inline void vringh_kiov_reset(struct vringh_kiov *kiov)
+{
+	kiov->off = 0;
+	kiov->i = 0;
+}
+
+static inline void vringh_kiov_cleanup(struct vringh_kiov *kiov)
+{
+	if (kiov->max_num & VRINGH_IOV_ALLOCATED)
+		kfree(kiov->iov);
+	kiov->max_num = kiov->used = kiov->i = kiov->off = 0;
+	kiov->iov = NULL;
+}

I've folded the patches and put them into my pending-rebases branch,
ready for virtio-next.

I'd really like MST's ack on this, too, so I'll repost the series.

Cheers,
Rusty.
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