On Thu, Jul 17, 2008 at 11:33:30AM +0200, Ingo Molnar wrote: > > * Ingo Molnar <[EMAIL PROTECTED]> wrote: > > > Jean, > > > > -tip testing found another (similar) i2c crash with latest -git, on a > > Core2Duo laptop: > > > > calling nforce2_init+0x0/0x1b > > initcall nforce2_init+0x0/0x1b returned 0 after 0 msecs > > calling nforce2_s4985_init+0x0/0x275 > > BUG: unable to handle kernel NULL pointer dereference at 0000000c > > IP: [<c04af2cf>] i2c_smbus_xfer+0x27/0x3f0 > > *pdpt = 00000000009cb001 *pde = 0000000000000000 > > Oops: 0000 [#1] SMP > > turning off I2C_NFORCE2_S4985 makes the system boot up fine. Workaround > patch below.
Well, it's pretty easy oops unless I misread something. It happened on not nforce2 motherboard, right? nforce2_init will just register PCI driver, no matching PCI ids => nforce2_set_reference() isn't called => nforce2_smbus stays NULL. Second module loads and tries to i2c_smbus_xfer(NULL, ) in module_init() hook which oopses. _______________________________________________ i2c mailing list i2c@lm-sensors.org http://lists.lm-sensors.org/mailman/listinfo/i2c
