Description of problem:
After Upgrading from RHEL 5.4 to RHEL 5.5 a warning is printed while booting the machine. The machine is a Dell Power Edge R710 with two Intel(R) Xeon(R) CPU E5520 and 32 GBof RAM.

Version-Release number of selected component (if applicable):
2.6.18-194.el5 #1 SMP Tue Mar 16 21:52:39 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux

How reproducible:
Boot machine.

Steps to Reproduce:
1. Upgrade to RHEL 5.5
2. Boot the machine.
  
Actual results:
Warning / Error printed during boot up.


Expected results:
No error shown.

Additional info from /var/log/messages:
Apr 10 15:35:32 xxx kernel: ACPI: Power Button (FF) [PWRF]
Apr 10 15:35:32 xxx kernel: ACPI: Mapper loaded
Apr 10 15:35:32 xxx kernel: dell-wmi: No known WMI GUID found
Apr 10 15:35:32 xxx kernel: ACPI Exception (evregion-0424): AE_SUPPORT, Returned by Handler for [DataTable] [20060707]
Apr 10 15:35:32 xxx kernel: ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PMI0._GHL] (Node ffff81044003d830), AE_SUPPORT
Apr 10 15:35:32 xxx kernel: ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PMI0._PMC] (Node ffff81044003d870), AE_SUPPORT
Apr 10 15:35:32 xxx kernel: ACPI Exception (power_meter-0759): AE_SUPPORT, Evaluating _PMC [20060707]
Apr 10 15:35:32 xxx kernel: Device 'power_meter0' does not have a release() function, it is broken and must be fixed.
Apr 10 15:35:32 xxx kernel: BUG: warning at drivers/base/core.c:101/device_release() (Not tainted)
Apr 10 15:35:32 xxx kernel:
Apr 10 15:35:32 xxx kernel: Call Trace:
Apr 10 15:35:32 xxx kernel:  [<ffffffff801519ef>] kobject_cleanup+0x53/0x7e
Apr 10 15:35:32 xxx kernel:  [<ffffffff80151a1a>] kobject_release+0x0/0x9
Apr 10 15:35:32 xxx kernel:  [<ffffffff80035748>] kref_put+0x6f/0x7a
Apr 10 15:35:32 xxx kernel:  [<ffffffff882ae0ed>] :power_meter:acpi_power_meter_add+0x158/0x16f
Apr 10 15:35:32 xxx kernel:  [<ffffffff801a115e>] acpi_bus_driver_init+0x30/0x57
Apr 10 15:35:32 xxx kernel:  [<ffffffff801a237c>] acpi_bus_register_driver+0x95/0xd4
Apr 10 15:35:32 xxx kernel:  [<ffffffff88224032>] :power_meter:acpi_power_meter_init+0x25/0x34
Apr 10 15:35:32 xxx kernel:  [<ffffffff800a7fe0>] sys_init_module+0xaf/0x1f2
Apr 10 15:35:32 xxx kernel:  [<ffffffff8005e116>] system_call+0x7e/0x83
Apr 10 15:35:32 xxx kernel: