On Wed, 30 Jan 2008 14:05:59 +0100 Manuel Lauss <[EMAIL PROTECTED]> wrote:
> On Wed, Jan 30, 2008 at 01:20:36PM +0100, Kristoffer Ericson wrote: > > Greetings, > > > > Driver detects card insertion / ejection and sets power properly. The > > mapping looks resonable also compairing to a working 2.6.17 driver. > > modprobe hostap_cs > > hostap_cs: Registered netdevice wifi0 > > Unable to handle kernel NULL pointer dereference at virtual address 00000028 > > pc = 8d0031b8 > > *pde = 00000000 > > Oops: 0000 [#1] > > Modules linked in: hostap_cs hostap orinoco_cs orinoco hermes atmel_cs atmel > > > > Pid : 283, Comm: modprobe > > PC is at generic_inw+0x8/0x20 > > PC : 8d0031b8 SP : 8ecaba74 SR : 400000f0 TEA : c0045040 Not tainted > > R0 : 00000028 R1 : 8d2d9030 R2 : 8d2ac050 R3 : 00000007 > > R4 : 00000028 R5 : 00000002 R6 : 00000080 R7 : 8ecf06a0 > > R8 : 8ee62000 R9 : 00008a32 R10 : c002a1b0 R11 : 8ee62000 > > R12 : 00000080 R13 : 8ee62000 R14 : 8ecf06a0 > > MACH: 0000458f MACL: 00001110 GBR : 296ce450 PR : 8d0031b8 > > > > Call trace: > > [<c002a1fa>] prism2_interrupt+0x4a/0xc50 [hostap_cs] > > The oops output suggests it crashes in > drivers/net/wireless/hostap/hostap_hw.c::prism2_check_magic(), > specifically when it tries to read the HF384X_SWSUPPORT0_OFF register > (which ist at offset 0x28, just like the oopsing address). > So, looking at the HFA384X_INW macro, it seems dev->base_addr is NULL. > I suspect this is because of set_io_map() callback in the hd64461.c > socket driver. The comment there says IO area is statically mapped, > yet it returns null; I suggest you let it return the base address of > the IO area instead. I tried returning the base IO area but didn't make any difference. I took a look at some other pcmcia drivers set_io_map and it looks it should only return 0 on success. When setting up the socket I define socket->io_offset = 0xba000000 which it should use. A bit lost why it doesn't get used though. Its the only IO area so thats why its static. Perhaps the io_offset is ment to be used with base_addr? > > -- > Manuel Lauss -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/