lm90: i2c_adapter i2c-0: Error: command never completed

From: Andrey Borzenkov
Date: Tue Jan 03 2006 - 08:41:24 EST


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Using 2.6.14.5 and 2.6.15 I get in dmesg:

i2c_adapter i2c-0: Error: command never completed
i2c_adapter i2c-0: Error: command never completed
i2c_adapter i2c-0: Error: command never completed
i2c_adapter i2c-0: Error: command never completed
i2c_adapter i2c-0: Error: command never completed
i2c_adapter i2c-0: Error: command never completed
i2c_adapter i2c-0: Error: command never completed
i2c_adapter i2c-0: Error: command never completed
...
i2c_adapter i2c-0: Error: command never completed
lm90 0-004c: Register 0x14 read failed (-1)
i2c_adapter i2c-0: Error: command never completed
lm90 0-004c: Register 0x14 read failed (-1)

I did not remember having something like it before, running Mandriva kernels
(up to 2.6.12-12mdk).

{pts/1}% sensors
eeprom-i2c-0-50
Adapter: SMBus ALI1535 adapter at ef00
Memory type: SDR SDRAM DIMM
Memory size (MB): 256

adm1032-i2c-0-4c
Adapter: SMBus ALI1535 adapter at ef00
M/B Temp: +41ÂC (low = -65ÂC, high = +127ÂC)
CPU Temp: +49.4ÂC (low = +45.0ÂC, high = +53.0ÂC)
M/B Crit: +127ÂC (hyst = +122ÂC)
CPU Crit: +100ÂC (hyst = +95ÂC)
{pts/1}% lspci
00:00.0 Host bridge: ALi Corporation M1644/M1644T Northbridge+Trident (rev 01)
00:01.0 PCI bridge: ALi Corporation PCI to AGP Controller
00:02.0 USB Controller: ALi Corporation USB 1.1 Controller (rev 03)
00:04.0 IDE interface: ALi Corporation M5229 IDE (rev c3)
00:06.0 Multimedia audio controller: ALi Corporation M5451 PCI AC-Link
Controller Audio Device (rev 01)
00:07.0 ISA bridge: ALi Corporation M1533 PCI to ISA Bridge [Aladdin IV]
00:08.0 Bridge: ALi Corporation M7101 Power Management Controller [PMU]
00:0a.0 Ethernet controller: Intel Corporation 82557/8/9 [Ethernet Pro 100]
(rev 08)
00:10.0 CardBus bridge: Texas Instruments PCI1410 PC card Cardbus Controller
(rev 01)
00:11.0 CardBus bridge: Toshiba America Info Systems ToPIC100 PCI to Cardbus
Bridge with ZV Support (rev 32)
00:11.1 CardBus bridge: Toshiba America Info Systems ToPIC100 PCI to Cardbus
Bridge with ZV Support (rev 32)
00:12.0 System peripheral: Toshiba America Info Systems SD TypA Controller
(rev 03)
01:00.0 VGA compatible controller: Trident Microsystems CyberBlade XPAi1 (rev
82)

I am ready to provide any additional information on request.

- -andrey
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