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Tejun Heo authored
Some AHCI controllers (ICH7 was reported) set pending bit in HOST_IRQ_STAT for non-existent ports and when it's not cleared falls into IRQ storm. Always clear full irq_stat instead of only the bits that are handled. As nothing changes for recognized ports, the risk of breaking things is pretty low. Reported and verified by Philipp Thomas in the following suse bugzilla. https://bugzilla.novell.com/attachment.cgi?id=215692Signed-off-by:
Tejun Heo <tj@kernel.org> Cc: Philipp Thomas <pth@novell.com> Signed-off-by:
Jeff Garzik <jgarzik@redhat.com>
ea0c62f7