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SubjectRe: [PATCH 0 of 18] ipath driver - for inclusion in 2.6.17
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On Fri, 2006-03-24 at 10:57 -0800, Roland Dreier wrote:

> It's customary to work through subsystem maintainers to merge new drivers...

OK, I'll feed patches to you, then. No inconvenience intended.

Thanks for applying the patches.

> I fixed a couple of minor whitespace problems and made it actually
> build (hint: the constant RDMA_NODE_IB_CA does not exist in the
> upstream kernel).

Oops.

> It seems you need to fix up your Kconfig dependencies somewhat.

Will do.

> On
> x86_64 allnoconfig + CONFIG_PCI=y, CONFIG_PCI_MSI=y,
> CONFIG_INFINIBAND=y, CONFIG_IPATH_CORE=y, CONFIG_INFINIBAND_IPATH=y, I get:
>
> drivers/built-in.o: In function `ipath_free_pddata': undefined reference to `kfree_skb'
> drivers/built-in.o: In function `ipath_alloc_skb': undefined reference to `__alloc_skb'
> drivers/built-in.o: In function `ipath_kreceive': undefined reference to `skb_over_panic'
> drivers/built-in.o: In function `ipath_init_chip': undefined reference to `kfree_skb'

Would your preference be to slap #ifdefs around those, or to just
require CONFIG_NET in Kconfig? The core driver should work fine without
any kernel-level networking support, so I suppose the former makes more
sense.

> It also looks like there are a few problems on ia64:
>
> drivers/infiniband/hw/ipath/ipath_verbs.c:733: warning: implicit declaration of function `atomic_set_mask'
> drivers/infiniband/hw/ipath/ipath_verbs.c:734: warning: implicit declaration of function `atomic_clear_mask'
> drivers/infiniband/hw/ipath/ipath_verbs.c: In function `show_stats':
> drivers/infiniband/hw/ipath/ipath_verbs.c:1184: warning: long long unsigned int format, u64 arg (arg 4)
> drivers/infiniband/hw/ipath/ipath_verbs.c:1184: warning: long long unsigned int format, u64 arg (arg 5)
> drivers/infiniband/hw/ipath/ipath_pe800.c: In function `ipath_pe_handle_hwerrors':
> drivers/infiniband/hw/ipath/ipath_pe800.c:353: warning: long long unsigned int format, long unsigned int arg (arg 5)
> drivers/infiniband/hw/ipath/ipath_pe800.c:353: warning: long long unsigned int format, long unsigned int arg (arg 3)

That's going to be interesting to test, because I don't have any ia64
hardware to even compile on. I have tested on x86_64 and powerpc, so
this seems like an arch-level header deficiency. Any idea what to do
about it?

> I also wouldn't say the driver is sparse clean.

I've been building with C=1 for months. I'll see if I can figure out
why you're getting such different results.

<b

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