Messages in this thread | | | From | Michael Buesch <> | Subject | Re: BUG: NULL pointer dereference at 00000000 -- IP: [<f8e783d5>] :b43:b43_dma_mapping_error+0x16/0x155 | Date | Thu, 12 Jun 2008 11:14:53 +0200 |
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On Thursday 12 June 2008 07:18:32 FUJITA Tomonori wrote: > > Yeah ok. That's an unlikely error path. > > Yeah, it doesn't always happen, but it possible that it happens?
Yes. I will create a new patch and send it to John Linville. So it will also quickly end up in the -mm tree, too. This will fix both bugs.
> No, seems that there are some confusion. This is just in -mm to find > problems: > > http://userweb.kernel.org/~akpm/mmotm/broken-out/dma-mapping-add-the-device-argument-to-dma_mapping_error.patch > > This patch is a trivial but changes lots of places. So it's difficult > to get an ACK on all the places.
Thanks a lot for explaining this. This makes things a lot easier.
> This patch need several fixes but all the patches are trivial except > for b34. I guess that it is because b34 handles devices for
It's called b43 ;)
> dma-mapping in an uncommon way.
Yeah, the hardware is pretty stupid, so we have lots of special workarounds and so on... So I hardly touch the DMA code and was very surprised about this bugreport. :)
-- Greetings Michael.
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