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swh:1:snp:49cd9498d6cccc5e78252c27dcb645bcf7bf0c91
Revision ea0c62f7cf70f13a67830471b613337bd0c9a62e authored by Tejun Heo on 27 June 2008, 16:49:02 UTC, committed by Jeff Garzik on 04 July 2008, 13:05:59 UTC 
ahci: always clear all bits in irq_stat
 
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=215692

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Philipp Thomas <pth@novell.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
1 parent 464b328
History
Tip revision: 644e9524388a5dbc6d4f58c492ee9ef7bd4ddf4d authored by Linus Torvalds on 26 November 2022, 02:02:49 UTC
Merge tag 'for-v6.1-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
Tip revision: 644e952
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