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Message-ID: <CACKLOr3_nsWy7z3QQejFbmgJJ78Nhv8J6fHFe=WjeAtghoCa5w@mail.gmail.com> Date: Fri, 3 Feb 2012 10:22:00 +0100 From: javier Martin <javier.martin@...ta-silicon.com> To: Russell King - ARM Linux <linux@....linux.org.uk> Cc: linux-kernel@...r.kernel.org, Vinod Koul <vinod.koul@...el.com>, Dan Williams <dan.j.williams@...el.com>, linux-arm-kernel@...ts.infradead.org, linux-media@...r.kernel.org Subject: Re: [dmaengine] [Q] jiffies value does not increase in dma_sync_wait() Hi Russell, On 3 February 2012 10:10, Russell King - ARM Linux <linux@....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? http://lxr.linux.no/#linux+v3.2.2/include/linux/irqflags.h#L120 -- Javier Martin Vista Silicon S.L. CDTUC - FASE C - Oficina S-345 Avda de los Castros s/n 39005- Santander. Cantabria. Spain +34 942 25 32 60 www.vista-silicon.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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