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libata-sff: Don't try and activate channels which are not in use
authorAlan <alan@lxorguk.ukuu.org.uk>
Mon, 8 Jan 2007 12:10:05 +0000 (12:10 +0000)
committerJeff Garzik <jeff@garzik.org>
Fri, 9 Feb 2007 22:39:30 +0000 (17:39 -0500)
commit4112e16a7c606a80810d22d55bfc742eaa61fecb
treec48274decc14c4d71dd99f9c3f93087698e767f4tree | snapshot
parentd73f30e1c9a9af14757fa5bf4014343926047156commit | diff
libata-sff: Don't try and activate channels which are not in use

An ATA controller in native mode may have one or more channels disabled
and not assigned resources. In that case the existing code crashes trying
to access I/O ports 0-7.

Add the neccessary check.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
drivers/ata/libata-sff.c diff | blob | history
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