MSI: Give archs the option to free all MSI/Xs at once.

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This patch introduces an optional function, arch_teardown_msi_irqs(),
which gives an arch the opportunity to do per-device teardown for
MSI/X. If that's not required, the default version simply calls
arch_teardown_msi_irq() for each msi irq required.

arch_teardown_msi_irqs() is simply passed a pdev, attached to the pdev
is a list of msi_descs, it is up to the arch to free the irq associated
with each of these as appropriate.

For archs that _don't_ implement arch_teardown_msi_irqs(), all msi_descs
with irq == 0 are considered unallocated, and the arch teardown routine
is not called on them.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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Michael Ellerman 2007-04-18 19:39:22 +10:00 • committed by Greg Kroah-Hartman

parent 9c8313343c

commit 032de8e2fe

2 changed files with 40 additions and 36 deletions

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include/linux/msi.h

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