linux-kernel - Re: [PATCH v7 1/8] Talitos: Support for async

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Date:	Sat, 1 Sep 2012 23:47:56 -0700
From:	Dan Williams <dan.j.williams@...il.com>
To:	Geanta Neag Horia Ioan-B05471 <B05471@...escale.com>
Cc:	Liu Qiang-B32616 <B32616@...escale.com>,
	"linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
	"herbert@...dor.hengli.com.au" <herbert@...dor.hengli.com.au>,
	"davem@...emloft.net" <davem@...emloft.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
	Li Yang-R58472 <r58472@...escale.com>,
	Phillips Kim-R1AAHA <R1AAHA@...escale.com>,
	"vinod.koul@...el.com" <vinod.koul@...el.com>,
	"dan.j.williams@...el.com" <dan.j.williams@...el.com>,
	"arnd@...db.de" <arnd@...db.de>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
Subject: Re: [PATCH v7 1/8] Talitos: Support for async_tx XOR offload

On Thu, Aug 30, 2012 at 7:23 AM, Geanta Neag Horia Ioan-B05471
<B05471@...escale.com> wrote:
>
> Besides these:
> 1. As Dan Williams mentioned, you should explain why you are using
> both spin_lock_bh and spin_lock_irqsave on the same lock.

It looks like talitos_process_pending() can be called from hardirq
context via talitos_error().  So spin_lock_bh is not sufficient.
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