linux kernel panic 에러 문의 드립니다.

안녕하세요..

커널 버젼은 아마도 2.6.39 정도 될거 같은데 정확하진 않네요.. 암튼 커널에 새로운 i2c 디바이스 driver를 추가하여 빌드하였는데요...

probe 함수 내에서 i2c 통신 코드를 실행하면 i2c 통신이 잘 되는데요

아래와 같이 주기 함수를 설정해 놓고 이 함수 내에서 i2c 통신을 실행하면 커널 패닉이 발생합니다. 혹시 비슷한 경험 하신분 계시면 어떻게 해결하셨는지 조언 부탁드립니다.

init_timer(&info->monitor_timer);
info->monitor_timer.expires = jiffies + HZ / 50;
info->monitor_timer.data = (unsigned long)info;
info->monitor_timer.function = periodic_function;
add_timer(&info->monitor_timer);
mod_timer(&info->monitor_timer, info->monitor_timer.expires);

커널 로그

[ 5.082012] c0 BUG: scheduling while atomic: swapper/0/0x00000104
[ 5.088083] c0 Unable to handle kernel NULL pointer dereference at virtual address 00000000
[ 5.096381] c0 pgd = c0004000
[ 5.099330] c0 [00000000] *pgd=66262564, *pte=c0c0c0c0, *ppte=00000000
[ 5.105838] c0 Internal error: Oops: 80000005 [#1] PREEMPT SMP
[ 5.111646] c0 Modules linked in:
[ 5.114944] c0 CPU: 0 Not tainted (3.0.31-20131001.112113-eng-svn12 #35)
[ 5.121968] c0 PC is at 0x0
[ 5.124751] c0 LR is at enqueue_task+0x74/0x80
[ 5.129168] c0 pc : [<00000000>] lr : [] psr: 40000193
[ 5.129199] c0 sp : c08538b0 ip : 000004b8 fp : c08538cc
[ 5.141133] c0 r10: 00000000 r9 : 80000193 r8 : 00000000
[ 5.146597] c0 r7 : c092ffcc r6 : c1df5840 r5 : 00000001 r4 : c092fbb8
[ 5.153362] c0 r3 : c0635de0 r2 : 00000001 r1 : c092fbb8 r0 : c1df5840
[ 5.160128] c0 Flags: nZcv IRQs off FIQs on Mode SVC_32 ISA ARM Segment kernel
[ 5.167759] c0 Control: 10c5387d Table: 4000404a DAC: 00000015
[ 5.173742] c0
[ 5.173752] c0 LR: 0xc0088a00:
[ 5.178510] c0 8a00 e2433001 e5843014 e89da830 e1a0c00d e92dd8f0 e24cb004 e92d4000 e8bd4000
[ 5.186923] c0 8a20 e1a04001 e1a05002 e1a06000 ebffff8d e59421c8 e59431cc e1923003 1a000009
[ 5.195335] c0 8a40 e5942004 e59f3038 e5921014 e59f2034 e7922101 e0833002 e2833e4b e1c300d0
[ 5.203748] c0 8a60 e3a03f72 e18400f3 e1a00006 e1a01004 e1a02005 e5943030 e1a0e00f e593f004
[ 5.212161] c0 8a80 e89da8f0 c0051840 c09290bc e1a0c00d e92dd830 e24cb004 e92d4000 e8bd4000
[ 5.220573] c0 8aa0 e5913000 e1a04000 e3130002 0a000004 e591300c e3130901 05903498 02433001
[ 5.228986] c0 8ac0 05803498 e1a00004 ebffffcf e5943014 e2833001 e5843014 e89da830 e1a0c00d
[ 5.237398] c0 8ae0 e92dd830 e24cb004 e92d4000 e8bd4000 e1a04001 e1a05000 e10f3000 e3130080
[ 5.245812] c0
[ 5.245823] c0 SP: 0xc0853830:
[ 5.250581] c0 3830 00b9be9f 00000000 00000000 c1df5840 000004b0 c1df5840 0000040f 00000005
[ 5.258993] c0 3850 c1df5840 c092ffcc c08538cc c0853868 c0058b94 c00521b0 c1df5840 c092fbb8
[ 5.267406] c0 3870 00000001 c0635de0 c092fbb8 00000001 c1df5840 c092ffcc 00000000 80000193
[ 5.275818] c0 3890 00000000 c08538cc 000004b8 c08538b0 c0088a80 00000000 40000193 ffffffff
[ 5.284231] c0 38b0 c1df5840 c1df5840 c09290bc c092ffcc c08538e4 c08538d0 c0088acc c0088a18
[ 5.292644] c0 38d0 c092fbb8 c1df5840 c08538fc c08538e8 c008cdb8 c0088a98 c092fbb8 c1df5840
[ 5.301056] c0 38f0 c085393c c0853900 c00976a8 c008cda4 c1df5840 c00ab524 c0051840 c0051840
[ 5.309469] c0 3910 c085395c c0853d4c 00000000 eb01e628 00000000 00000003 00000001 00000000
[ 5.317882] c0
[ 5.317893] c0 FP: 0xc085384c:
[ 5.322651] c0 384c 00000005 c1df5840 c092ffcc c08538cc c0853868 c0058b94 c00521b0 c1df5840
[ 5.331064] c0 386c c092fbb8 00000001 c0635de0 c092fbb8 00000001 c1df5840 c092ffcc 00000000
[ 5.339476] c0 388c 80000193 00000000 c08538cc 000004b8 c08538b0 c0088a80 00000000 40000193
[ 5.347889] c0 38ac ffffffff c1df5840 c1df5840 c09290bc c092ffcc c08538e4 c08538d0 c0088acc
[ 5.356301] c0 38cc c0088a18 c092fbb8 c1df5840 c08538fc c08538e8 c008cdb8 c0088a98 c092fbb8
[ 5.364714] c0 38ec c1df5840 c085393c c0853900 c00976a8 c008cda4 c1df5840 c00ab524 c0051840
[ 5.373126] c0 390c c0051840 c085395c c0853d4c 00000000 eb01e628 00000000 00000003 00000001
[ 5.381539] c0 392c 00000000 c085394c c0853940 c00977e4 c0097490 c085396c c0853950 c00bd6a4
[ 5.389952] c0
[ 5.389963] c0 R0: 0xc1df57c0:
[ 5.394722] c0 57c0 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 5.403134] c0 57e0 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 5.411547] c0 5800 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 5.419959] c0 5820 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 5.428372] c0 5840 00000001 00000000 dead4ead 00000000 c092fbb8 00000000 00000000 0000000f
[ 5.436784] c0 5860 00000099 0000010f 00000101 ffff1999 00000000 00000000 00000000 00000000
[ 5.445197] c0 5880 00000000 00000000 000001b2 00000000 00000d7d 00000000 00000000 00000000
[ 5.453609] c0 58a0 00000000 00000000 b21710b4 00000000 b2ad065f 00000000 b2ad065f 00000000
[ 5.462023] c0
[ 5.462033] c0 R1: 0xc092fb38:
[ 5.466792] c0 fb38 c0310bcc c06327bc c0310c6c c06327c8 c0310c98 c06327d4 c047eae4 c06327e0
[ 5.475204] c0 fb58 c047eb4c c06327e8 c047eb80 c06327f0 c047ec3c c06327f8 c047efd4 c0632800
[ 5.483617] c0 fb78 c047f03c c0632808 c047f070 c0632810 c047f12c c0632818 c04b3148 c0632820
[ 5.492030] c0 fb98 c04b36a8 c0632828 c04b36c4 c0632830 00000001 40000000 00000080 00000000
[ 5.500442] c0 fbb8 00000002 c0852000 00000002 00200000 00000000 00000000 00000001 00000000
[ 5.508855] c0 fbd8 00000078 00000078 00000078 00000000 c0635de0 00000000 00000400 00400000
[ 5.517267] c0 fbf8 00000000 00000000 00000000 c092fc04 c092fc04 00000000 00000000 00000000
[ 5.525680] c0 fc18 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 5.534093] c0
[ 5.534104] c0 R3: 0xc0635d60:
[ 5.538862] c0 5d60 00000000 c0081ffc c008202c 00000000 5f6d7770 74696e69 00000000 00000000
[ 5.547275] c0 5d80 00000000 00000000 00082040 00000000 0c284860 00000001 2b4b6270 0000010f
[ 5.555687] c0 5da0 4c627078 0002102d 40200800 00000080 00000000 00000063 00000063 00000000
[ 5.564100] c0 5dc0 ffffffea 00000000 00000000 00000001 00000001 00000000 ffffffea 00000000
[ 5.572512] c0 5de0 00000000 00000000 c0088618 00000000 00000000 c00882b0 c0082a24 c0082a8c
[ 5.580925] c0 5e00 c0082a04 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 5.589338] c0 5e20 c0082abc c0082aa4 00000000 00000000 c0087198 c0087174 c0082ad4 00000000
[ 5.597750] c0 5e40 00000001 c07d82fc 00000002 c08113e8 00000004 c07bfad4 00000008 c07eaa18
[ 5.606163] c0
[ 5.606174] c0 R4: 0xc092fb38:
[ 5.610933] c0 fb38 c0310bcc c06327bc c0310c6c c06327c8 c0310c98 c06327d4 c047eae4 c06327e0
[ 5.619345] c0 fb58 c047eb4c c06327e8 c047eb80 c06327f0 c047ec3c c06327f8 c047efd4 c0632800
[ 5.627758] c0 fb78 c047f03c c0632808 c047f070 c0632810 c047f12c c0632818 c04b3148 c0632820
[ 5.636170] c0 fb98 c04b36a8 c0632828 c04b36c4 c0632830 00000001 40000000 00000080 00000000
[ 5.644583] c0 fbb8 00000002 c0852000 00000002 00200000 00000000 00000000 00000001 00000000
[ 5.652995] c0 fbd8 00000078 00000078 00000078 00000000 c0635de0 00000000 00000400 00400000
[ 5.661408] c0 fbf8 00000000 00000000 00000000 c092fc04 c092fc04 00000000 00000000 00000000
[ 5.669821] c0 fc18 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 5.678234] c0
[ 5.678244] c0 R6: 0xc1df57c0:
[ 5.683003] c0 57c0 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 5.691415] c0 57e0 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 5.699828] c0 5800 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 5.708241] c0 5820 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 5.716653] c0 5840 00000001 00000000 dead4ead 00000000 c092fbb8 00000000 00000000 0000000f
[ 5.725065] c0 5860 00000099 0000010f 00000101 ffff1999 00000000 00000000 00000000 00000000
[ 5.733478] c0 5880 00000000 00000000 000001b2 00000000 00000d7d 00000000 00000000 00000000
[ 5.741891] c0 58a0 00000000 00000000 b21710b4 00000000 b2ad065f 00000000 b2ad065f 00000000
[ 5.750304] c0
[ 5.750315] c0 R7: 0xc092ff4c:
[ 5.755073] c0 ff4c 00000000 00000000 00000000 c0955cbc c0955420 c0950004 c0930858 c0930ac0
[ 5.763486] c0 ff6c 00000000 00000000 00000000 00000000 00000000 00000000 c092ff84 c092ff84
[ 5.771898] c0 ff8c 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 5.780311] c0 ffac 00000000 00000000 00000000 00000000 dead4ead ffffffff ffffffff 00000000
[ 5.788724] c0 ffcc 00000001 00000000 dead4ead 00000000 c092fbb8 c092ffe0 c092ffe0 00000000
[ 5.797136] c0 ffec 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 5.805548] c0 000c 00000000 c09df5a0 00000000 00000000 00000000 00000000 00000000 00000000
[ 5.813961] c0 002c 00000000 00000000 00000001 00000000 00000000 dead4ead ffffffff ffffffff
[ 5.822376] c0 Process swapper (pid: 0, stack limit = 0xc08522f0)
[ 5.828447] c0 Stack: (0xc08538b0 to 0xc0854000)
[ 5.833046] c0 38a0: c1df5840 c1df5840 c09290bc c092ffcc
[ 5.841461] c0 38c0: c08538e4 c08538d0 c0088acc c0088a18 c092fbb8 c1df5840 c08538fc c08538e8
[ 5.849873] c0 38e0: c008cdb8 c0088a98 c092fbb8 c1df5840 c085393c c0853900 c00976a8 c008cda4
[ 5.858285] c0 3900: c1df5840 c00ab524 c0051840 c0051840 c085395c c0853d4c 00000000 eb01e628
[ 5.866698] c0 3920: 00000000 00000003 00000001 00000000 c085394c c0853940 c00977e4 c0097490
[ 5.875110] c0 3940: c085396c c0853950 c00bd6a4 c00977d4 eb01e61c 00000000 eb01e628 00000000
[ 5.883523] c0 3960: c085399c c0853970 c00835b0 c00bd694 00000000 eb01e614 80000193 00000000
[ 5.891935] c0 3980: 00000001 00000003 c0946444 00000000 c08539cc c08539a0 c0088204 c0083564
[ 5.900348] c0 39a0: 00000000 000000c0 c08539cc eb01e600 000000c0 c0927eb0 0000007d c0852000
[ 5.908761] c0 39c0: c08539fc c08539d0 c0394b58 c00881c8 00000000 eb1cc980 c091926c 0000007d
[ 5.917173] c0 39e0: 0000007d c0852000 c0946444 00000000 c0853a3c c0853a00 c00e9994 c0394960
[ 5.925585] c0 3a00: 0000101e 00000002 c0919220 00000000 00000000 c0919220 c091926c eb1cc980
[ 5.933998] c0 3a20: 0000007d c0853f38 c0852000 c0853b34 c0853a5c c0853a40 c00e9c4c c00e9914
[ 5.942410] c0 3a40: c0919220 c091926c c0852000 0000007d c0853a74 c0853a60 c00ec474 c00e9c0c
[ 5.950823] c0 3a60: c09290bc c00512b4 c0853a84 c0853a78 c00e9480 c00ec3d8 c0853aac c0853a88
[ 5.959236] c0 3a80: c005235c c00e944c ffffffff fe810000 0000005d 00000106 00000105 c0852000
[ 5.967648] c0 3aa0: c0853b9c c0853ab0 c00589c0 c005230c 00000105 80000193 c094dc04 00000000
[ 5.976061] c0 3ac0: c0853b37 c0853b37 c094db5c c09cb952 0000004b c09cb868 c0853b34 c0853b9c
[ 5.984473] c0 3ae0: c0853ac8 c0853af8 80000113 c009c20c 60000113 ffffffff 00000003 0000004b
[ 5.992886] c0 3b00: c0853b24 80000113 10624dd3 3b9aca00 00000000 c09cb91c c0852000 c09cb868
[ 6.001298] c0 3b20: 2ee95c79 00000001 00000003 00000000 00000001 00203063 302e3520 31303238
[ 6.009711] c0 3b40: 00205d32 c00cd6ec 2ee90569 00000001 c1df49a0 004c4b3f 00000001 2f16f140
[ 6.018123] c0 3b60: 2ee90569 00000001 00000003 00000001 00000001 c0853f38 00000000 c1df5840
[ 6.026536] c0 3b80: ffff1d80 00000000 c0852000 c0051840 c0853bb4 c0853ba0 c062dad4 c009bda0
[ 6.034949] c0 3ba0: 00b9be9f c0853bbc c0853bdc c0853bc8 c008eed8 c062dab4 c07a6548 c092feac
[ 6.043361] c0 3bc0: 00000000 00000104 c092fbb8 00000000 c0853cac c0853be0 c062e82c c008ee98
[ 6.051774] c0 3be0: c00c4b88 c00c85f0 c0853c04 c0853bf8 c00c4bc8 c0852000 c0853c34 c0853c08
[ 6.060186] c0 3c00: c062eb1c c0051840 c0051840 c0051840 c0051840 c0051840 c0051840 c00501b4
[ 6.068599] c0 3c20: c0852000 c09cbd60 c0853c5c c0853c38 c0052720 c0078e88 ffffffff fe810000
[ 6.077011] c0 3c40: 0000001c 00000105 00000104 c0853ce4 c0853d4c c0853c60 c00589c0 c0631a48
[ 6.085424] c0 3c60: c0853c8c c0853c70 c0631a58 c02811f8 c0853cc8 c0853cfc c09290bc c0087bec
[ 6.093837] c0 3c80: c09290bc c0853cc8 c09cbf60 c09cbf60 ffff1d80 c0852000 c0914380 c09c7204
[ 6.102249] c0 3ca0: c0853cbc c0853cb0 c062eb1c c062e018 c0853d2c c0853cc0 c062ef9c c062ead0
[ 6.110661] c0 3cc0: 80000193 ffff1998 c09cc868 c09cc868 ffff1d80 c09cbf60 c00ab3f0 c092fbb8
[ 6.119074] c0 3ce0: ffffffff ffffffff 00000000 00000000 00000000 00000000 00000000 80000113
[ 6.127487] c0 3d00: c00bd990 eb01e600 00000000 eb01e668 000003e8 c0853d4c c0927eb0 eb01e614
[ 6.135899] c0 3d20: c0853d8c c0853d30 c039430c c062ee18 c00d47ac c00d55cc eb01e678 c0852000
[ 6.144311] c0 3d40: 00000002 c0853e04 c0853d64 00000000 c092fbb8 c00bd688 eb01e628 eb01e628
[ 6.152724] c0 3d60: c0630da8 eb01e668 00000000 c0914380 00000002 c0853e04 c0853dd4 ffff1998
[ 6.161137] c0 3d80: c0853dbc c0853d90 c0391410 c0394190 00000000 00000000 ea1b0fc0 00000001
[ 6.169549] c0 3da0: eb311d40 eb311d60 c0853dd4 00000030 c0853e4c c0853dc0 c0384ebc c0391364
[ 6.177961] c0 3dc0: c0853de4 c0853dd0 c0071834 c007134c 00000000 00000000 00000000 00000000
[ 6.186373] c0 3de0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 6.194787] c0 3e00: 00000000 00000040 00000001 c0853e1f 00010040 c0850030 c0853dd4 002811f8
[ 6.203199] c0 3e20: c09cbf60 c09cbf60 00000103 ea1b0ff4 c0852000 c0914380 00200200 c0914344
[ 6.211612] c0 3e40: c0853eac c0853e50 c00aac84 c0384de8 00000001 c1df4a08 00000003 c09ccd80
[ 6.220025] c0 3e60: c09ccb80 c09cc980 c0853e78 ea1b0fc0 c0384ddc c09cc780 c0853e78 c0853e78
[ 6.228437] c0 3e80: c0853ec8 00000004 00000101 c0852000 00000000 00000001 c0914340 c0914344
[ 6.236850] c0 3ea0: c0853ef4 c0853eb0 c00a2914 c00aab3c 2de5fd3d 00000001 2e320f80 0000000a
[ 6.245262] c0 3ec0: 00000000 00000103 2de5fd3d c0852000 c00512b4 c0852000 00000000 c0946444
[ 6.253675] c0 3ee0: c0852000 c09cbd60 c0853f0c c0853ef8 c00a2d1c c00a2854 c09290bc c00512b4
[ 6.262087] c0 3f00: c0853f34 c0853f10 c00526d4 c00a2c8c ffffffff fe810000 0000001c 00000002
[ 6.270500] c0 3f20: 00000001 00000000 c0853f8c c0853f38 c00589c0 c0052660 0000000f 00000001
[ 6.278912] c0 3f40: c0853f80 00000000 c0852000 c09c8364 c06367f4 c09315f4 4000406a 413fc090
[ 6.287325] c0 3f60: 00000000 c0853f8c c0853f90 c0853f80 c006a6d4 c006a6d8 60000013 ffffffff
[ 6.295737] c0 3f80: c0853fac c0853f90 c005a114 c006a6b0 00000002 00000000 c0034824 7fffffff
[ 6.304150] c0 3fa0: c0853fc4 c0853fb0 c0620a18 c005a05c c0929140 00000000 c0853ff4 c0853fc8
[ 6.312562] c0 3fc0: c0008a20 c0620984 c0008518 00000000 00000000 c0034824 10c5387d c0927eac
[ 6.320975] c0 3fe0: c0034820 c09315ec 00000000 c0853ff8 40008044 c0008778 00000000 00000000
[ 6.329382] c0 Backtrace:
[ 6.332082] c0 [] (enqueue_task+0x0/0x80) from [] (activate_task+0x40/0x50)
[ 6.340744] c0 r7:c092ffcc r6:c09290bc r5:c1df5840 r4:c1df5840
[ 6.346651] c0 [] (activate_task+0x0/0x50) from [] (ttwu_activate+0x20/0x44)
[ 6.355401] c0 r5:c1df5840 r4:c092fbb8
[ 6.359226] c0 [] (ttwu_activate+0x0/0x44) from [] (try_to_wake_up+0x224/0x344)
[ 6.368236] c0 r5:c1df5840 r4:c092fbb8
[ 6.372060] c0 [] (try_to_wake_up+0x0/0x344) from [] (default_wake_function+0x1c/0x20)
[ 6.381688] c0 [] (default_wake_function+0x0/0x20) from [] (autoremove_wake_function+0x1c/0x40)
[ 6.392094] c0 [] (autoremove_wake_function+0x0/0x40) from [] (__wake_up_common+0x58/0x8c)
[ 6.402060] c0 r7:00000000 r6:eb01e628 r5:00000000 r4:eb01e61c
[ 6.407964] c0 [] (__wake_up_common+0x0/0x8c) from [] (__wake_up+0x48/0x5c)
[ 6.416642] c0 [] (__wake_up+0x0/0x5c) from [] (s3c24xx_i2c_irq+0x204/0x6ac)
[ 6.425390] c0 r8:c0852000 r7:0000007d r6:c0927eb0 r5:000000c0 r4:eb01e600
[ 6.432341] c0 [] (s3c24xx_i2c_irq+0x0/0x6ac) from [] (handle_irq_event_percpu+0x8c/0x2f8)
[ 6.442311] c0 [] (handle_irq_event_percpu+0x0/0x2f8) from [] (handle_irq_event+0x4c/0x6c)
[ 6.452284] c0 [] (handle_irq_event+0x0/0x6c) from [] (handle_fasteoi_irq+0xa8/0x14c)
[ 6.461815] c0 r7:0000007d r6:c0852000 r5:c091926c r4:c0919220
[ 6.467721] c0 [] (handle_fasteoi_irq+0x0/0x14c) from [] (generic_handle_irq+0x40/0x4c)
[ 6.477426] c0 r5:c00512b4 r4:c09290bc
[ 6.481254] c0 [] (generic_handle_irq+0x0/0x4c) from [] (asm_do_IRQ+0x5c/0xbc)
[ 6.490183] c0 [] (asm_do_IRQ+0x0/0xbc) from [] (__irq_svc+0x80/0x160)
[ 6.498415] c0 Exception stack(0xc0853ab0 to 0xc0853af8)
[ 6.503708] c0 3aa0: 00000105 80000193 c094dc04 00000000
[ 6.512122] c0 3ac0: c0853b37 c0853b37 c094db5c c09cb952 0000004b c09cb868 c0853b34 c0853b9c
[ 6.520533] c0 3ae0: c0853ac8 c0853af8 80000113 c009c20c 60000113 ffffffff
[ 6.527381] c0 r9:c0852000 r8:00000105 r7:00000106 r6:0000005d r5:fe810000
[ 6.534146] c0 r4:ffffffff
[ 6.537020] c0 [] (vprintk+0x0/0x614) from [] (printk+0x30/0x38)
[ 6.544736] c0 [] (printk+0x0/0x38) from [] (__schedule_bug+0x4c/0x7c)
[ 6.552966] c0 r3:00000104 r2:00000000 r1:c092feac r0:c07a6548
[ 6.558872] c0 [] (__schedule_bug+0x0/0x7c) from [] (__schedule+0x820/0x9a4)
[ 6.567622] c0 r5:00000000 r4:c092fbb8
[ 6.571446] c0 [] (__schedule+0x0/0x9a4) from [] (schedule+0x58/0x70)
[ 6.579599] c0 [] (schedule+0x0/0x70) from [] (schedule_timeout+0x190/0x31c)
[ 6.588359] c0 [] (schedule_timeout+0x0/0x31c) from [] (s3c24xx_i2c_xfer+0x188/0x3c0)
[ 6.597898] c0 [] (s3c24xx_i2c_xfer+0x0/0x3c0) from [] (i2c_transfer+0xb8/0xf4)