Messages in this thread | | | Date | Fri, 3 Feb 2012 10:22:00 +0100 | Subject | Re: [dmaengine] [Q] jiffies value does not increase in dma_sync_wait() | From | javier Martin <> |
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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?
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
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