Re: [PATCH] drivers/base/driver.c : driver_unregister

From: Arne Caspari
Date: Mon Dec 13 2004 - 03:25:32 EST


Arne Caspari wrote:
Russell King wrote:
No. The semaphore is there to ensure that the function does not
return until the driver structure has a use count of zero. If you
tested your patch, you'd find that your change would deadlock on
the locked semaphore.
>
I am sorry I can not test that patch since unloading of the modules I am currently testing blocks anyway. This makes it very hard to test the patch :-( and currently this was the reason why I was going to this.

I reverted the code to the original 2.6.9 and unloading of IEEE1394 modules like 'eth1394' does just that: It deadlocks on this semaphore.

At least this is a good excuse why I was not able to test my patch ;-) The behaviour just remained the same as before...

Btw. I am developing/debugging on a machine without serial/parallel ports. Is there a way to connect a kernel mode debugger to this. I am used to windows development and there the debugger works on a IEEE1394 connection. Does anybody have hints to improve development on such a machine?


Thanks,

/Arne

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