Re: [PATCH 1/1] ARM: OMAP: omap3beagle: register SD interface

[Tony Lindgren <tony@atomide.com>]

* Koen Kooi <k.kooi@student.utwente.nl> [080424 12:54]:
> 
> Op 24 apr 2008, om 02:21 heeft Tony Lindgren het volgende geschreven:
> > Hi,
> >
> > * Koen Kooi <k.kooi@student.utwente.nl> [080423 00:42]:
> >> From dac3cdc5952ab39fa7ae0545d43e2daa95329b07 Mon Sep 17 00:00:00  
> >> 2001
> >> From: Koen Kooi <koen@openembedded.org>
> >> Date: Wed, 23 Apr 2008 09:38:31 +0200
> >> Subject: [PATCH] omap3beagle: register SD interface
> >
> > Thanks for updating it. I've pushed it now, but I had to apply some
> > parts manually because of recent changes. Can you please check it
> > got applied OK?
> 
> I compiled an booted latest git and see this:
> 
> 6>TWL4030: TRY attach Slave TWL4030-ID1 on Adapter OMAP I2C adapter [1]
> <1>Unable to handle kernel NULL pointer dereference at virtual address  
> 00000000
> <1>pgd = c0004000
> <1>[00000000] *pgd=00000000
> Internal error: Oops: 5 [#1]
> Modules linked in:
> CPU: 0    Not tainted  (2.6.25-omap1 #11)
> PC is at __rcu_process_callbacks+0x1ac/0x244
> LR is at free_task+0x38/0x40
> pc : [<c0073924>]    lr : [<c0048b04>]    psr: 80000113
> sp : c7c1dda8  ip : c7c085c0  fp : c7c1ddc4
> r10: 00000000  r9 : c0405678  r8 : 00000001
> r7 : c0400d80  r6 : 00000005  r5 : 00000000  r4 : c040563c
> r3 : 00000000  r2 : 00000027  r1 : c7c78340  r0 : c7c085c0
> Flags: Nzcv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
> Control: 00c5387f  Table: 80004018  DAC: 00000017
> Process swapper (pid: 1, stack limit = 0xc7c1c2e0)
> Stack: (0xc7c1dda8 to 0xc7c1e000)
> dda0:                   c02fae30 c0400e04 00000001 00000008 c7c1ddd4  
> c7c1ddc8
> ddc0: c00739d4 c0073784 c7c1de04 c7c1ddd8 c004f6f4 c00739c8 c7c1de04  
> c03dd4e0
> dde0: 00000025 00000000 c03fc8f5 c7c1df14 c03ece00 00000049 c7c1de1c  
> c7c1de08
> de00: c004f79c c004f6a0 c03dd4e0 c03dd4e0 c7c1de3c c7c1de20 c002c050  
> c004f760
> de20: 00000010 ffffffff d8200000 00000000 c7c1defc c7c1de40 c002c630  
> c002c00c
> de40: c03daec8 000007f0 00000000 40000013 c03fc8ac c03ed158 00000000  
> c03fc8f5
> de60: c7c1df14 c03ece00 00000049 c7c1defc c7c1de58 c7c1de88 c004ab10  
> c004b228
> de80: 60000013 ffffffff c7c1dea4 c7c1dea4 c7c1dee4 40000013 c02faabc  
> c0067800
> dea0: c0194a14 22222222 22222222 22222222 22222222 c7ca0470 c7c1dee4  
> c7c1dec8
> dec0: c02fadd0 c0067534 00000000 c7ca0470 c03ece58 c03ecff8 c03ed158  
> 00000000
> dee0: 00000001 c7ca0438 c03ece00 c7ca05ac c7c1df0c c7c1df00 c03b2c00  
> c004af70
> df00: c7c1df54 c7c1df20 c01ad5e0 c03b2bf4 c03989af c03ed158 c7ca05ac  
> 00000001
> df20: c03ece00 00000000 00000000 c7ca0438 c03ece00 c03ec870 00000000  
> c7c1c000
> df40: 00000000 c0027404 c7c1df74 c7c1df58 c01aa41c c01ad524 00000000  
> c00260bc
> df60: 00000000 00000000 c7c1df84 c7c1df78 c001c870 c01aa37c c7c1dff4  
> c7c1df88
> df80: c0008620 c001c864 c7c1dfac c7c1df98 c004801c c0047ea4 307ffe12  
> 00000000
> dfa0: 00000000 c7c1dfb0 c002cb04 c0048004 00000000 00000000 c0008550  
> c004d8f8
> dfc0: 00000000 00000001 00000000 00000000 00000000 00000000 00000000  
> 00000000
> dfe0: 00000000 00000000 00000000 c7c1dff8 c004d8f8 c000855c 002ffe02  
> 0073ecca
> Backtrace:
> [<c0073778>] (__rcu_process_callbacks+0x0/0x244) from [<c00739d4>]  
> (rcu_process_callbacks+0x18/0x38)
>   r6:00000008 r5:00000001 r4:c0400e04
> [<c00739bc>] (rcu_process_callbacks+0x0/0x38) from [<c004f6f4>]  
> (__do_softirq+0x60/0xc0)
> [<c004f694>] (__do_softirq+0x0/0xc0) from [<c004f79c>] (irq_exit 
> +0x48/0x88)
> [<c004f754>] (irq_exit+0x0/0x88) from [<c002c050>]  
> (__exception_text_start+0x50/0x68)
>   r4:c03dd4e0
> [<c002c000>] (__exception_text_start+0x0/0x68) from [<c002c630>]  
> (__irq_svc+0x30/0x80)
> Exception stack(0xc7c1de40 to 0xc7c1de88)
> de40: c03daec8 000007f0 00000000 40000013 c03fc8ac c03ed158 00000000  
> c03fc8f5
> de60: c7c1df14 c03ece00 00000049 c7c1defc c7c1de58 c7c1de88 c004ab10  
> c004b228
> de80: 60000013 ffffffff
>   r6:00000000 r5:d8200000 r4:ffffffff
> [<c004af64>] (vprintk+0x0/0x30c) from [<c03b2c00>] (printk+0x1c/0x24)
> [<c03b2be4>] (printk+0x0/0x24) from [<c01ad5e0>]  
> (twl4030_attach_adapter+0xc8/0x69c)
>   r3:00000001 r2:c7ca05ac r1:c03ed158 r0:c03989af
> [<c01ad518>] (twl4030_attach_adapter+0x0/0x69c) from [<c01aa41c>]  
> (i2c_register_driver+0xac/0xf8)
> [<c01aa370>] (i2c_register_driver+0x0/0xf8) from [<c001c870>]  
> (twl4030_init+0x18/0x20)
>   r7:00000000 r6:00000000 r5:c00260bc r4:00000000
> [<c001c858>] (twl4030_init+0x0/0x20) from [<c0008620>] (kernel_init 
> +0xd0/0x29c)
> [<c0008550>] (kernel_init+0x0/0x29c) from [<c004d8f8>] (do_exit 
> +0x0/0x5ec)
> Code: e5943024 e3530000 099da870 e3a06000 (e5935000)
> <0>Kernel panic - not syncing: Fatal exception in interrupt
> 
> More bootlogs at http://amethyst.openembedded.net/~koen/beagleboard/beagle-i2c-crash.txt
> 
> I suspect it's somewhere in i2c, but I have no proof for that. Any  
> quick guesses what might be causing this?

Can you try if reverting following helps?

http://source.mvista.com/git/gitweb.cgi?p=linux-omap-2.6.git;a=commitdiff;h=38c50a71591628c38206aa402500074a6137a4dc

Tony