Date: Fri, 3 Feb 2012 09:24:56 +0000
From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: javier Martin <javier.martin@vista-silicon.com>
Cc: linux-kernel@vger.kernel.org, Vinod Koul <vinod.koul@intel.com>,
        Dan Williams <dan.j.williams@intel.com>,
        linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org
Subject: Re: [dmaengine] [Q] jiffies value does not increase in
	dma_sync_wait()
Message-ID: <20120203092456.GJ889@n2100.arm.linux.org.uk>
References: <CACKLOr26BuTh8Qr8pFHoTJoyCW9ty4-Kg-YRisXmN3=spzY6_Q@mail.gmail.com> <20120203091038.GI889@n2100.arm.linux.org.uk> <CACKLOr3_nsWy7z3QQejFbmgJJ78Nhv8J6fHFe=WjeAtghoCa5w@mail.gmail.com>
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On Fri, Feb 03, 2012 at 10:22:00AM +0100, javier Martin wrote:
> Hi Russell,
> 
> On 3 February 2012 10:10, Russell King - ARM Linux
> <linux@arm.linux.org.uk> wrote:
> > On Fri, Feb 03, 2012 at 09:37:48AM +0100, javier Martin wrote:
> >> I've introduced a couple of printk() to check why this timeout is not
> >> triggered and I've found that the value of jiffies does not increase
> >> between loop iterations (i. e. it's like time didn't advance).
> >>
> >> Does anyobody know what reasons could make jiffies not being updated?
> >
> > Are interrupts disabled?
> 
> Apparently not but, how could I check it for sure? Is
> "irqs_disabled()" suitable for that purpose?

Yes.
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