Hi On Friday 21 March 2014, Greg Kroah-Hartman wrote: > 3.13-stable review patch. If anyone has any objections, please let me know. > > ------------------ > > From: Zhang Rui <rui.zhang@xxxxxxxxx> > > commit b355cee88e3b1a193f0e9a81db810f6f83ad728b upstream. > > ACPI table may export resource entry with 0 length. > But the current code interprets this kind of resource in a wrong way. > It will create a resource structure with > res->end = acpi_resource->start + acpi_resource->len - 1; > > This patch fixes a problem on my machine that a platform device fails > to be created because one of its ACPI IO resource entry (start = 0, > end = 0, length = 0) is translated into a generic resource with > start = 0, end = 0xffffffff. > > Signed-off-by: Zhang Rui <rui.zhang@xxxxxxxxx> > Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> > Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> [...] This patch should probably be dropped from -stable (3.13 and 3.10) for the time being, it causes this warning: pnp 00:01: unknown resource type 4 in _CRS pnp 00:01: can't evaluate _CRS: 1 on all systems I've tested it on so far (~12 systems of vastly varying components and age, covering amd64 and i386). This also seems to affect others as well: http://www.spinics.net/lists/linux-acpi/msg49431.html http://www.spinics.net/lists/linux-acpi/msg49438.html Regards Stefan Lippers-Hollmann -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html