[RFT] Threaded IRQ handlers for b43

[RFT] Threaded IRQ handlers for b43

[Michael Buesch]

This request-for-test patch converts the b43 driver to use threaded
interrupt handlers. This is needed to support b43 on SDIO. But it also
simplifies the locking by removal of the wl->irq_lock spinlock.

http://bu3sch.de/patches/wireless-testing/20090816-1535/patches/002-b43-threaded-irq-handler.patch

A known regression is a new race between the interrupt handler and the
beacon update handler. But as long as you don't run AP mode, it won't hurt.
I'm working on a solution...

Please test this patch whether it creates other regressions (performance and crashes).

The patch also needs the following hack to the threaded IRQ code:
http://bu3sch.de/patches/wireless-testing/20090816-1535/patches/001-hack-threaded-irqs.patch

-- 
Greetings, Michael.

Re: [RFT] Threaded IRQ handlers for b43

[Michael Buesch]

On Sunday 16 August 2009 15:39:57 Michael Buesch wrote:
> This request-for-test patch converts the b43 driver to use threaded
> interrupt handlers. This is needed to support b43 on SDIO. But it also
> simplifies the locking by removal of the wl->irq_lock spinlock.
> 
> http://bu3sch.de/patches/wireless-testing/20090816-1535/patches/002-b43-threaded-irq-handler.patch
> 
> A known regression is a new race between the interrupt handler and the
> beacon update handler. But as long as you don't run AP mode, it won't hurt.
> I'm working on a solution...
> 
> Please test this patch whether it creates other regressions (performance and crashes).
> 
> The patch also needs the following hack to the threaded IRQ code:
> http://bu3sch.de/patches/wireless-testing/20090816-1535/patches/001-hack-threaded-irqs.patch
> 

This is the correct fix for the threaded IRQ code. Apply this instead of the hack:
http://bu3sch.de/patches/wireless-testing/20090817-1347/patches/001-fix-irq-thread-wakeup.patch

-- 
Greetings, Michael.