On Wed, 23 Sep 2009 14:59:08 +0200, Henrik Kretzschmar wrote: > Wolfram Sang schrieb: > > On Tue, Sep 22, 2009 at 05:46:10PM +0200, Henrik Kretzschmar wrote: > > > > > >> at boot time my system (Wincor/Nixdorf Beetle D1) sometimes crashs while loading the i2c-piix4 driver. > >> > > > > Have you checked if you have the latest BIOS for this machine? Sometimes > > PCI-problems got fixed there... > > > > > Thanks for you fast replies, > > the latest BIOS (05/08) is already installed, so no fixing can be expected that way > > > I tested my killer-commands at the other box @home with no crashes. > > The commands _work_ with a coldstarted Linux and i2c-piix not loaded, > so the only thing I can do is blacklisting it and renounce sensors support, > having a good a argument for a new hardware aquisition. :) That's really odd, considering that the i2c-piix4 driver doesn't change the PCI device configuration, it only reads from it. If you trigger some transactions (for example by running "sensors -s" at boot time?) then you also write to the I/O ports. But this hardly explains how subsequently reading the PCI config space would crash. You might still want to check if maybe ACPI is interfering with the i2c-piix4 driver. This isn't the kind of result I'd expect, but who knows. > > For completness the message with the SMBus revision, which is not the pci-revision, is: > > SMBus Host Controller at 0x1040, revision 0 Revision 0 here as well, I suspect there never was any other revision of this chip. > > > The "?" at the interrupt line of lspci is a little strange: > > >> Interrupt: pin ? routed to IRQ 9 > > looking at lspci -x -s 7.3 I can see that PCI_INTERRUPT_PIN == 0 > > I cant see that i2p-piix does any interrupts, refering /proc/irq/9/spurious > > The driver says: > > Using Interrupt SMI# for SMBus This is only a debug message, saying how the interrupt line is configured, but you are right that the driver doesn't use interrupts (much to our shame.) > > I'm not sure, but my box @home has the same lspci output with the "?". > > So long, thanks for help. -- Jean Delvare http://khali.linux-fr.org/wishlist.html -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
