Corey, The ipmi_smb debug probe gets nothing because i2c hasn't been loaded yet.
I did find the problem, though. The patch http://khali.linux-fr.org/devel/i2c/linux-2.4.27/linux-2.4.27-i2c-2.10.0 -drivers-i2c.diff was added, because it was pointed to by lm_sensors http://secure.netroedge.com/~lm78/download.html But it empties out init_i2c_all() in drivers/char/i2c-core.c. Which of course what drivers/char/mem.c:chr_dev_init() uses for the i2c init. It worked by the module dependencies if =m, but fails if =y. Sigh. The patch writer didn't bother to consider =y. Andy -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Corey Minyard Sent: Wednesday, March 22, 2006 12:39 PM To: Cress, Andrew R Cc: openipmi Subject: Re: [Openipmi-developer] ipmi_smb with i2c driver loading order I haven't looked at the 2.4 code for a long time. It is supposed to detect when new adapters are installed and configure them dynamically. Can you add ipmi_smb=debug_probe to the kernel command line and see what comes out? -Corey Cress, Andrew R wrote: >Corey, > >I have someone trying to build a 2.4.27 kernel with OpenIPMI driver + >SMBus patches + lm_sensors patch (v2.10) for i2c_i801. >It seems to work fine if they are all defined as modules, but they want >compile these modules in to the kernel, and when they do that, i2c loads >after ipmi. >The drivers/char/Config.in has the $CONFIG_I2C dependency, so it looks >like this ought to work. >Details attached. I've always worked with kernels where lm_sensors/i2c >was already integrated. > >Is this something you have seen before? Any hints? > >Andy > > > > >----------------------------------------------------------------------- - > > >So I updated the config changing all =m by =y in the IPMI and I2C >sections. >Here are 2 extracts from my config: > ># ># I2C support ># >CONFIG_I2C=y >CONFIG_I2C_ALGOBIT=y ># CONFIG_I2C_PHILIPSPAR is not set ># CONFIG_I2C_ELV is not set ># CONFIG_I2C_VELLEMAN is not set ># CONFIG_I2C_PPORT is not set ># CONFIG_SCx200_I2C is not set >CONFIG_SCx200_ACB=y >CONFIG_I2C_ALGOPCF=y ># CONFIG_I2C_ELEKTOR is not set ># CONFIG_I2C_PCFEPP is not set >CONFIG_I2C_MAINBOARD=y ># CONFIG_I2C_ALI1535 is not set ># CONFIG_I2C_ALI15X3 is not set ># CONFIG_I2C_ALI1563 is not set ># CONFIG_I2C_HYDRA is not set ># CONFIG_I2C_AMD756 is not set ># CONFIG_I2C_AMD8111 is not set >CONFIG_I2C_I801=y ># CONFIG_I2C_I810 is not set ># CONFIG_I2C_PIIX4 is not set ># CONFIG_I2C_NFORCE2 is not set ># CONFIG_I2C_SIS5595 is not set ># CONFIG_I2C_SIS630 is not set ># CONFIG_I2C_SIS645 is not set ># CONFIG_I2C_SAVAGE4 is not set ># CONFIG_I2C_VIA is not set ># CONFIG_I2C_VIAPRO is not set ># CONFIG_I2C_VOODOO3 is not set ># CONFIG_I2C_ISA is not set ># CONFIG_I2C_CHARDEV is not set ># CONFIG_I2C_PROC is not set > >CONFIG_IPMI_HANDLER=y ># CONFIG_IPMI_PANIC_EVENT is not set ># CONFIG_IPMI_PANIC_STRING is not set >CONFIG_IPMI_DEVICE_INTERFACE=y ># CONFIG_IPMI_SI is not set ># CONFIG_IPMI_KCS is not set >CONFIG_IPMI_SMB=y >CONFIG_IPMI_WATCHDOG=y ># CONFIG_IPMI_POWEROFF is not set > >Unfortunately, the lm_sensor patch somehow has changed >the init order of i2c-core (it used to get started before ipmi). >I have these messages in this order in the log: >... >ipmi_smb_setup smb_dbg_probe=1 0x0.0x42:1 >(this a printk of the outcome of ipmi_smb_setup that I added) >... >Software Watchdog Timer: 0.05, timer margin: 60 sec >ipmi message handler version 37 >ipmi device interface version 37 >IPMI SMB Interface driver version 37 >IPMI watchdog driver version 37 >RAMDISK driver initialized: 16 RAM disks of 65536K size 1024 blocksize >loop: loaded (max 8 devices) >imq driver loaded. >Uniform Multi-Platform E-IDE driver Revision: 7.00beta4-2.4 >ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx >hda: SILICONSYSTEMS INC 128MB, ATA DISK drive >ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 >hda: attached ide-disk driver. >hda: 254208 sectors (130 MB) w/0KiB Cache, CHS=993/8/32 >Partition check: > hda: hda1 hda2 hda3 hda4 >i2c-core.o: i2c core module version 2.10.0 (20060214) >i2c-i801 version 2.10.0 (20060214) >... > >And the device 42 is not detected anymore. >The only thing that I can see is the fact that i2c-core and i2c-i801 are inited >after the ipmi objects, which seems wrong... >I dont know inside kernel how the init order is decided > > ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. 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