On Fri, Jul 25, 2014 at 10:12:18PM +0530, Vinod Koul wrote:

On Fri, Jul 25, 2014 at 06:37:46PM +0200, Maxime Ripard wrote:

quoted

quoted

Can you please send follow patches for these:
- don't recall if I pointed earlier, but can we use direct conversion for
  calculating convert_burst() and convert_buswidth(), latter one at least
  seem doable

Ok. Do you still want the error reporting for the invalid width and
burst size?

I think for convert_buswidth() we can do away with a switch case and convert
the numbers directly

Well, it's already using a switch. Do you want me to remove completely
the function and move the switch where it's used? It's used two times
now, so I'd like to avoid duplicating it.

quoted

quoted

- don't use devm_request_irq(). You have irq enabled and you have killed
  tasklet. This is too racy. You need to ensure no irqs can be generated before killing
  tasklets.

Ok, would calling disable_irq before killing the tasklet an option for
you ? that would allow to keep the devm_request_irq.

disable_irq also does syncronize, so it might work. But then again if the
probe fails after registering irq due to some other reason, and you get into
races with unitialized driver as well.

I think it might be easier to amnge by working with plain old request_irq()

Yes, devm_free_irq like Russell suggested seems to both address your
concerns, while not having to care about it at probe.

quoted

I'll also send patches for the various breakages and warnings spotted
by the autobuilders.

Yes please, I havent seen the reports in detail yet, but they are reporting
mainly due COMPILE_TEST. DO you really want that?

I don't know, I thought it was the new "default". And it allows to
catch issues like we've seen.

Yes it did help me to compile for ARM, i didnt see any defconfig which has
this MACH in arm/configs

I don't know what kernel you were looking at, but it's been introduced
in 3.16.

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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