tree 0267f65fd9237a41207e4359e09d09e60f6cd754
parent 1c659d61cfbd8dc3926688c1bbf12d80f4cfb5c2
author Eric W. Biederman <ebiederm@xmission.com> 1170013923 -0700
committer Greg Kroah-Hartman <gregkh@suse.de> 1170892208 -0800

msi: Kill the msi_desc array.

We need to be able to get from an irq number to a struct msi_desc.
The msi_desc array in msi.c had several short comings the big one was
that it could not be used outside of msi.c.  Using irq_data in struct
irq_desc almost worked except on some architectures irq_data needs to
be used for something else.

So this patch adds a msi_desc pointer to irq_desc, adds the appropriate
wrappers and changes all of the msi code to use them.

The dynamic_irq_init/cleanup code was tweaked to ensure the new
field is left in a well defined state.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>