Bug 14293
| Summary: | strange messages in dmesg: i801_smbus: probe of 0000:00:1f.3 failed with error -16 | ||
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| Product: | Drivers | Reporter: | Vladimir (snigurmd) |
| Component: | I2C | Assignee: | Jean Delvare (jdelvare) |
| Status: | RESOLVED CODE_FIX | ||
| Severity: | low | CC: | akpm, krah.tm, shane.huang |
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | 2.6.31.1 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: |
kernel config
i2c: Hide probe errors cause by ACPI resource conflicts i2c: Hide probe errors cause by ACPI resource conflicts (v2) |
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Reassigned to drivers/i2c. This is not a bug per se. Do you have any problem with this machine? Created attachment 23229 [details]
i2c: Hide probe errors cause by ACPI resource conflicts
Possible fix: be quieter on ACPI resource conflict.
Created attachment 23256 [details]
i2c: Hide probe errors cause by ACPI resource conflicts (v2)
Patch committed upstream: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=18669eabde2ff5fc446e72e043f0539059763438 Scheduled for 2.6.31-stable as well. I've got the same problem. Using 2.6.28.x is reads like this: [ 19.966966] i801_smbus 0000:00:1f.3: PCI INT B -> Link[LNKB] -> GSI 5 (level, low) -> IRQ 5 [ 19.966974] ACPI: I/O resource 0000:00:1f.3 [0x1100-0x111f] conflicts with ACPI region SBUS [0x1100-0x110f] [ 19.966977] ACPI: Device needs an ACPI driver My sensors on Samsung P35 did work (lm90 hwmon). 2.6.31 read this: [ 17.405744] i801_smbus 0000:00:1f.3: PCI INT B -> Link[LNKB] -> GSI 5 (level, low) -> IRQ 5 [ 17.405751] ACPI: I/O resource 0000:00:1f.3 [0x1100-0x111f] conflicts with ACPI region SBUS [0x1100-0x110f] [ 17.405817] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver [ 17.405825] i801_smbus: probe of 0000:00:1f.3 failed with error -16 Now "sensors" does not return my lm90 detected ones like before - the failed -16 error is new too - so something is broken now. I would also add that this is a regression, because it did work on 2.6.28. Torsten, this is not a regression. This is a bug that has been fixed. You may not like the side effects of the fix, but we are not going to revert. If you want to put your machine at risk again, simply boot with acpi_enforce_resources=lax. But do not complain if your system is unstable or if your hardware dies from overheating. On laptops, it's much better to use ACPI for thermal management in general anyway. The lm90 driver won't give you much more than the standard ACPI thermal zone. Patch was included in stable kernel 2.6.31.5: http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.31.y.git;a=commit;h=91be0e881d6abf1da9903c831d20954f2325ce3e So this bug is fixed and can be closed. (In reply to comment #8) > Torsten, this is not a regression. This is a bug that has been fixed. You may > not like the side effects of the fix, but we are not going to revert. If you > want to put your machine at risk again, simply boot with > acpi_enforce_resources=lax. But do not complain if your system is unstable or > if your hardware dies from overheating. On laptops, it's much better to use > ACPI for thermal management in general anyway. The lm90 driver won't give you > much more than the standard ACPI thermal zone. Hm before i've got lm90 and the normal thermal zone, why its not possible now to get both anymore? Its right that i don't see "more" - except the low and high stuff and m/b temp, but i wonder why its not possible to have both, like before - got thermal zone and smbus sensors? lm90-i2c-0-4c Adapter: SMBus I801 adapter at 1100 M/B Temp: +42 C (low = -65 C, high = +127 C) CPU Temp: +42.9 C (low = +37.1 C, high = +67.2 C) M/B Crit: +112 C (hyst = +102 C) CPU Crit: +112 C (hyst = +102 C) Because accessing the same I/O ports from ACPI and native drivers at the same time is not safe. |
Created attachment 23225 [details] kernel config Don't know whatever the hell it is. System: mini-note Samsung NC10 with WiMAX (Intel WiFi/WiMAX 5150), Zenwalk linux. such messages in system logs: i801_smbus 0000:00:1f.3: PCI INT B -> GSI 19 (level, low) -> IRQ 19 ACPI: I/O resource 0000:00:1f.3 [0x18a0-0x18bf] conflicts with ACPI region SMBI [0x18a0-0x18af] ACPI: Device needs an ACPI driver i801_smbus: probe of 0000:00:1f.3 failed with error -16 modules loaded: bnep 5616 2 rfcomm 25216 8 hidp 8496 2 l2cap 16464 17 bnep,rfcomm,hidp iwlagn 62032 0 iwlcore 68240 1 iwlagn i2400m_usb 19888 0 mac80211 102112 2 iwlagn,iwlcore btusb 7044 2 i2400m 62204 1 i2400m_usb cfg80211 59600 3 iwlagn,iwlcore,mac80211 bluetooth 34628 9 bnep,rfcomm,hidp,l2cap,btusb wimax 15956 2 i2400m_usb,i2400m i2c_i801 5920 0 rfkill 8324 3 cfg80211,bluetooth,wimax