Re: [PATCH 2/2] i2c: i2c-omap: Call request_irq with IRQF_DISABLED

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi Felipe,

On Thu, 12 Mar 2009, Felipe Balbi wrote:

> This is the link where Ingo discusses why !IRQF_DISABLED could cause
> stack overflow:
> 
> http://lkml.org/lkml/2009/3/3/71
> 
> You probably wanna take a look at the whole thread to figure out the
> discussion, but basically Ingo and Peter (Zijlstra) believe
> !IRQF_DISABLED is a bug and drivers needing that probably should be
> using threaded irqs (which is not yet merged) or the hw is broken, and
> for those an IRQF_ENABLED flag will be created and a TAINT will also be
> placed.
> 
> Once that gets merged, all drivers will be forced (at some point) to
> IRQF_DISABLED and those which don't want that will be moved gradually to
> threaded irq.
> 
> This patch is also interesting:
> 
> http://lkml.org/lkml/2009/3/2/33

Thanks for the links.  Those issues are indeed distinct from the spurious 
IRQ problem that Ari is reporting.


- Paul
--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Linux Arm (vger)]     [ARM Kernel]     [ARM MSM]     [Linux Tegra]     [Linux WPAN Networking]     [Linux Wireless Networking]     [Maemo Users]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Trails]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux