On a QS22 blade, the BMC containing the (ibmpex) power meters is enumerated via Open Firmware. Check for "of_platform" to handle this case. Signed-off-by: Darrick J. Wong <djwong at us.ibm.com> Index: lm-sensors-3.0.0/lib/sysfs.c =================================================================== --- lm-sensors-3.0.0.orig/lib/sysfs.c 2008-03-31 16:08:07.000000000 -0700 +++ lm-sensors-3.0.0/lib/sysfs.c 2008-03-31 16:08:14.000000000 -0700 @@ -532,7 +532,8 @@ entry.chip.bus.type = SENSORS_BUS_TYPE_PCI; entry.chip.bus.nr = 0; } else - if ((!subsys || !strcmp(subsys, "platform"))) { + if ((!subsys || !strcmp(subsys, "platform") || + !strcmp(subsys, "of_platform"))) { /* must be new ISA (platform driver) */ if (sscanf(dev_name, "%*[a-z0-9_].%d", &entry.chip.addr) != 1) entry.chip.addr = 0;