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hotplug of PCI card -- hangs box or throws error message‏‏

Posted by Krishna Sunitha 
-lnx-2 kernel: handlers:
Jan 22 12:47:56 krishna-lnx-2 kernel: [<c057ec59>] (usb_hcd_irq+0x0/0x53)
Jan 22 12:47:56 krishna-lnx-2 kernel: Disabling IRQ #16

2) The coldplug of the device is good. Linux detects it as follows:

#lspci
...
05:00.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 62)
05:00.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 62)
05:00.2 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 65)
...


#lspci -v
...
05:00.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 62) (prog-if 00 [UHCI])
Subsystem: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller
Flags: bus master, medium devsel, latency 32, IRQ 16
I/O ports at c400
Capabilities: [80] Power Management version 2

05:00.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 62) (prog-if 00 [UHCI])
Subsystem: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller
Flags: bus master, medium devsel, latency 32, IRQ 17
I/O ports at cc00
Capabilities: [80] Power Management version 2

05:00.2 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 65) (prog-if 20 [EHCI])
Subsystem: VIA Technologies, Inc. USB 2.0
Flags: bus master, medium devsel, latency 32, IRQ 18
Memory at feafec00 (32-bit, non-prefetchable)
Capabilities: [80] Power Management version 2
...

3) Details of the box:
[root@krishna-lnx-2 log]# uname -a
Linux krishna-lnx-2 2.6.28 #2 SMP Tue Jan 13 13:42:13 PST 2009 i686 i686 i386 GNU/Linux
[root@krishna-lnx-2 log]#

[root@krishna-lnx-2 ~]# cat /etc/issue
CentOS release 5.2 (Final)
Kernel \r on an \m

#dmesg <-- output of dmesg during coldboot
....
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
processor ACPI_CPU:00: registered as cooling_device0
ACPI: Processor [CPU1] (supports 8 throttling states)
processor ACPI_CPU:01: registered as cooling_device1
ACPI: Processor [CPU2] (supports 8 throttling states)
processor ACPI_CPU:02: registered as cooling_device2
ACPI: Processor [CPU3] (supports 8 throttling states)
processor ACPI_CPU:03: registered as cooling_device3
ACPI: Processor [CPU4] (supports 8 throttling states)
...
Allocating PCI resources starting at 50000000 (gap: 40000000:bec00000)
PCI: Found Intel Corporation E7520 Memory Controller Hub with MMCONFIG support.
PCI: Using MMCONFIG for extended config space
PCI: Using configuration type 1 for base access
ACPI: EC: Look up EC in DSDT
ACPI: Interpreter enabled
ACPI: (supports S0 S1 S3 S5)
ACPI: Using IOAPIC for interrupt routing
ACPI: No dock devices found.
ACPI: PCI Root Bridge [PCI0] (0000:00)
...
pci 0000:05:00.0: supports D1 D2
pci 0000:05:00.0: PME# supported from D0 D1 D2 D3hot D3cold
pci 0000:05:00.0: PME# disabled
pci 0000:05:00.1: reg 20 io port: [0xcc00-0xcc1f]
pci 0000:05:00.1: supports D1 D2
pci 0000:05:00.1: PME# supported from D0 D1 D2 D3hot D3cold
pci 0000:05:00.1: PME# disabled
pci 0000:05:00.2: reg 10 32bit mmio: [0xfeafec00-0xfeafecff]
pci 0000:05:00.2: supports D1 D2
pci 0000:05:00.2: PME# supported from D0 D1 D2 D3hot D3cold
pci 0000:05:00.2: PME# disabled
pci 0000:05:01.0: reg 10 32bit mmio: [0xfd000000-0xfdffffff]
pci 0000:05:01.0: reg 14 io port: [0xc800-0xc8ff]
pci 0000:05:01.0: reg 18 32bit mmio: [0xfeaff000-0xfeafffff]
pci 0000:05:01.0: reg 30 32bit mmio: [0xfeac0000-0xfeadffff]
pci 0000:05:01.0: supports D1 D2
...



Thanks.
Krishna
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