Messages in this thread Patch in this message | | | Date | Mon, 2 Jan 2006 01:08:57 +0100 | From | Eric Van Buggenhaut <> | Subject | [hw_random] device not detected/patch |
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I run a TP42 with 2.6.14.2
One of the pci device is
0000:00:1e.0 0604: 8086:2448 (rev 81) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=02, subordinate=08, sec-latency=64 I/O behind bridge: 00004000-00008fff Memory behind bridge: c0200000-cfffffff Prefetchable memory behind bridge: e8000000-efffffff
discover sees it as a hw_random device
# grep 80862448 /lib/discover/pci.lst 80862448 bridge i810_rng 82801 Mobile PCI Bridge
and tries to load i810_rng module when support is really in hw_random:
# cat drivers/char/hw_random.c [...] static struct pci_device_id rng_pci_tbl[] = { { 0x1022, 0x7443, PCI_ANY_ID, PCI_ANY_ID, 0, 0, rng_hw_amd }, { 0x1022, 0x746b, PCI_ANY_ID, PCI_ANY_ID, 0, 0, rng_hw_amd },
{ 0x8086, 0x2418, PCI_ANY_ID, PCI_ANY_ID, 0, 0, rng_hw_intel }, { 0x8086, 0x2428, PCI_ANY_ID, PCI_ANY_ID, 0, 0, rng_hw_intel }, { 0x8086, 0x2448, PCI_ANY_ID, PCI_ANY_ID, 0, 0, rng_hw_intel }, { 0x8086, 0x244e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, rng_hw_intel }, { 0x8086, 0x245e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, rng_hw_intel },
{ 0, }, /* terminate list */ };
device isn't detected though:
# modprobe hw_random FATAL: Error inserting hw_random (/lib/modules/2.6.14.2n/kernel/drivers/char/hw_random.ko): No such device
hw_random: RNG not detected
Why wouldn't module detect the device ?
OTOH, pci.lst also lists device 80862430 as another RNG
# grep 80862430 /lib/discover/pci.lst 80862430 bridge i810_rng 82801AB PCI Bridge
but it's not listed in rng_pci_tbl[]
Does
--- drivers/char/hw_random.c.orig 2005-12-22 19:36:00.000000000 +0100 +++ drivers/char/hw_random.c 2005-12-22 19:36:16.000000000 +0100 @@ -155,6 +155,7 @@ { 0x8086, 0x2418, PCI_ANY_ID, PCI_ANY_ID, 0, 0, rng_hw_intel }, { 0x8086, 0x2428, PCI_ANY_ID, PCI_ANY_ID, 0, 0, rng_hw_intel }, + { 0x8086, 0x2430, PCI_ANY_ID, PCI_ANY_ID, 0, 0, rng_hw_intel }, { 0x8086, 0x2448, PCI_ANY_ID, PCI_ANY_ID, 0, 0, rng_hw_intel }, { 0x8086, 0x244e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, rng_hw_intel }, { 0x8086, 0x245e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, rng_hw_intel }, seem reasonable ?
Please CC me on reply
-- Eric VAN BUGGENHAUT ericvb@debian.org - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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