Hi Nishanth, After some testing I have found a little problem with the init > From: linux-omap-owner@xxxxxxxxxxxxxxx [mailto:linux-omap- > owner@xxxxxxxxxxxxxxx] On Behalf Of Menon, Nishanth > > Refactor the smart reflex implementation. [snip] > + return ret; > +} > +late_initcall(omap_sr_init); It seem that with late_initcall we are initializing SR after SGX init. This SGX init call DVFS to change opp and we are not yet initialized this cause the device to hang (Panic Joined) One solution will be to change from late_initcall to device_initcall so SR will be initialized before SGX + return ret; +} +device_initcall(omap_sr_init); Is there any objections or constraint with this ? Or maybe there is another way to fix this ? BR Guilhem -----[Panic]------ [ 8.128723] Unable to handle kernel NULL pointer dereference at virtual address 00000000 [ 8.137329] pgd = c0004000 [ 8.140289] [00000000] *pgd=00000000 [ 8.144042] Internal error: Oops: 5 [#1] PREEMPT [ 8.148895] Modules linked in: [ 8.152099] CPU: 0 Not tainted (2.6.29-omap1 #43) [ 8.157409] PC is at sr_vp_disable_both+0x18/0x80 [ 8.162322] LR is at program_opp+0x80/0x1d0 [ 8.166717] pc : [<c004e23c>] lr : [<c004f544>] psr: 60000013 [ 8.166717] sp : cec1fce0 ip : cec1fcf8 fp : cec1fcf4 [ 8.178741] r10: c050d3d8 r9 : 00000003 r8 : 00000000 [ 8.184204] r7 : 00000000 r6 : 00000010 r5 : 00000002 r4 : cec1e000 [ 8.191040] r3 : 00000000 r2 : 00000042 r1 : 00000043 r0 : 00000002 [ 8.197875] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel [ 8.205535] Control: 10c5387d Table: 80c04019 DAC: 00000017 [ 8.211578] [ 8.211578] PC: 0xc004e1bc: [ 8.216033] e1bc eb0df5ab ea000011 ebfffe8f e2504000 15d51000 11a02004 159f003c 1a000006 [ 8.224639] e1dc e1a00005 ebffff8f e2504000 0a000007 e5d51000 e1a02004 e59f0020 eb0df59c [ 8.233245] e1fc e59f001c e30014bd e3a02000 eb0083d7 e1a00004 e89da830 c04632b6 c04632e7 [ 8.241851] e21c c046330b c046316a e1a0c00d e92dd830 e24cb004 e59f3064 e7e102d0 e5933000 [ 8.250457] e23c e5d32000 e1520000 2a000002 e3a03000 e5833000 eafffffd e7935100 e5d53021 [ 8.259033] e25c e3530000 0a00000a e5d53020 e3530000 1a000007 e1a00005 ebffffc4 e2504000 [ 8.267639] e27c 0a000004 e5d51000 e59f0014 eb0df578 ea000000 e3a04000 e1a00004 e89da830 [ 8.276245] e29c c050d3a0 c046332f e1a0c00d e92dddf0 e24cb004 e2535000 e1a06000 e1a07001 [ 8.284851] [ 8.284851] LR: 0xc004f4c4: [ 8.289306] f4c4 e1a0c00d e92ddff0 e24cb004 e24dd024 e50b0040 e1a06182 e0810183 e0811006 [ 8.297912] f4e4 e50b103c e1a05002 e50b0038 e1a09003 e5d01004 e1a0c00d e51b003c e3cc4d7f [ 8.306518] f504 e51b2040 e3a08000 e59fa168 e201101f e2023003 e5d02004 e3c4403f e1a07008 [ 8.315124] f524 e1a03283 e202201f e1832002 e1831001 e1a00002 e50b2034 e50b1030 ebfffb37 [ 8.323730] f544 e1550009 d3a02000 c3a02001 e50b2044 e51b3044 e1570003 1a000036 e51bc040 [ 8.332336] f564 e35c0001 1a00000c e59f010c e5903000 e59a0210 e7931006 eb000a65 e59f20fc [ 8.340942] f584 e59a0214 e5923000 e7931006 eb000a60 ebffdd91 e59f30e8 ea000023 e3a01040 [ 8.349517] f5a4 e3a00c02 ebffdf20 e10f8000 f10c0080 e5943004 e2833001 e5843004 e50b004c [ 8.358123] [ 8.358123] SP: 0xcec1fc60: [ 8.362609] fc60 ffffffff 000002c7 00000000 cedc0720 cec1fc94 cec1fc80 ffffffff cec1fccc [ 8.371215] fc80 00000010 00000000 cec1fcf4 cec1fc98 c003c9ac c003c200 00000002 00000043 [ 8.379821] fca0 00000042 00000000 cec1e000 00000002 00000010 00000000 00000000 00000003 [ 8.388397] fcc0 c050d3d8 cec1fcf4 cec1fcf8 cec1fce0 c004f544 c004e23c 60000013 ffffffff [ 8.397003] fce0 cec1e000 00000002 cec1fd44 cec1fcf8 c004f544 c004e230 22222222 22222222 [ 8.405609] fd00 22222222 00000002 c04db200 c04db208 00000042 00000043 00000000 c04da0a8 [ 8.414215] fd20 00000002 00000002 00000000 00000001 00000000 00000003 cec1fd7c cec1fd48 [ 8.422821] fd40 c004f7d4 c004f4d0 c04da0cc 60000013 cec1fda4 cec1fd60 c03ccc74 00000000 [ 8.431427] [ 8.431427] IP: 0xcec1fc78: [ 8.435882] fc78 ffffffff cec1fccc 00000010 00000000 cec1fcf4 cec1fc98 c003c9ac c003c200 [ 8.444488] fc98 00000002 00000043 00000042 00000000 cec1e000 00000002 00000010 00000000 [ 8.453094] fcb8 00000000 00000003 c050d3d8 cec1fcf4 cec1fcf8 cec1fce0 c004f544 c004e23c [ 8.461700] fcd8 60000013 ffffffff cec1e000 00000002 cec1fd44 cec1fcf8 c004f544 c004e230 [ 8.470275] fcf8 22222222 22222222 22222222 00000002 c04db200 c04db208 00000042 00000043 [ 8.478881] fd18 00000000 c04da0a8 00000002 00000002 00000000 00000001 00000000 00000003 [ 8.487487] fd38 cec1fd7c cec1fd48 c004f7d4 c004f4d0 c04da0cc 60000013 cec1fda4 cec1fd60 [ 8.496093] fd58 c03ccc74 00000000 00000000 c04da0a8 00000002 00000001 cec1fd94 cec1fd80 [ 8.504699] [ 8.504699] FP: 0xcec1fc74: [ 8.509155] fc74 cec1fc80 ffffffff cec1fccc 00000010 00000000 cec1fcf4 cec1fc98 c003c9ac [ 8.517761] fc94 c003c200 00000002 00000043 00000042 00000000 cec1e000 00000002 00000010 [ 8.526367] fcb4 00000000 00000000 00000003 c050d3d8 cec1fcf4 cec1fcf8 cec1fce0 c004f544 [ 8.534973] fcd4 c004e23c 60000013 ffffffff cec1e000 00000002 cec1fd44 cec1fcf8 c004f544 [ 8.543579] fcf4 c004e230 22222222 22222222 22222222 00000002 c04db200 c04db208 00000042 [ 8.552154] fd14 00000043 00000000 c04da0a8 00000002 00000002 00000000 00000001 00000000 [ 8.560760] fd34 00000003 cec1fd7c cec1fd48 c004f7d4 c004f4d0 c04da0cc 60000013 cec1fda4 [ 8.569366] fd54 cec1fd60 c03ccc74 00000000 00000000 c04da0a8 00000002 00000001 cec1fd94 [ 8.577972] [ 8.577972] R4: 0xcec1df80: [ 8.582427] df80 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 8.591033] dfa0 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 8.599639] dfc0 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 8.608245] dfe0 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 8.616851] e000 00000002 00000003 00000000 cec13c00 c04df86c 00000000 00000017 cec13c00 [ 8.625427] e020 c050e3c0 cec1e000 00000420 cec13e74 c04d0d48 cec1a800 cec1fdb4 cec1fd70 [ 8.634033] e040 c03cbd70 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 8.642639] e060 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 8.651245] [ 8.651245] R10: 0xc050d358: [ 8.655822] d358 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 8.664398] d378 00000000 00000000 00000000 00000000 cec52e00 c05761c0 c04e1808 00000100 [ 8.673004] d398 c0462f97 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 8.681610] d3b8 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 8.690216] d3d8 00000000 00000000 00000004 00000000 00000000 00000000 00000000 00000000 [ 8.698822] d3f8 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 8.707397] d418 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 8.716003] d438 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 8.724609] Process swapper (pid: 1, stack limit = 0xcec1e2e0) [ 8.730712] Stack: (0xcec1fce0 to 0xcec20000) [ 8.735260] fce0: cec1e000 00000002 cec1fd44 cec1fcf8 c004f544 c004e230 22222222 22222222 [ 8.743957] fd00: 22222222 00000002 c04db200 c04db208 00000042 00000043 00000000 c04da0a8 [ 8.752655] fd20: 00000002 00000002 00000000 00000001 00000000 00000003 cec1fd7c cec1fd48 [ 8.761352] fd40: c004f7d4 c004f4d0 c04da0cc 60000013 cec1fda4 cec1fd60 c03ccc74 00000000 [ 8.770019] fd60: 00000000 c04da0a8 00000002 00000001 cec1fd94 cec1fd80 c004f89c c004f6a0 [ 8.778717] fd80: c04da0a8 00000000 cec1fdb4 cec1fd98 c0058d44 c004f80c c04da0a8 c04da0cc [ 8.787414] fda0: c04dac68 00000002 cec1fdd4 cec1fdb8 c0059294 c0058cf4 c0558be8 00000000 [ 8.796112] fdc0: 00000000 00000002 cec1fde4 cec1fdd8 c0058ae8 c00591f0 cec1fdfc cec1fde8 [ 8.804779] fde0: c01b7dc8 c0058aa8 c0558bb8 00000000 cec1fe34 cec1fe00 c01b7928 c01b7dac [ 8.813476] fe00: c0558c98 c04dac68 c04dacac 00000001 c04dac68 c04f23ac c04f23ac 00000000 [ 8.822174] fe20: 00000000 00000000 cec1fe44 cec1fe38 c01a2e98 c01b7630 cec1fe54 cec1fe48 [ 8.830841] fe40: c01cc618 c01a2e7c cec1fe74 cec1fe58 c01cb880 c01cc604 c04dac68 c04dacf0 [ 8.839538] fe60: c04f23ac 00000000 cec1fe94 cec1fe78 c01cb990 c01cb7bc c04f23ac cec1fe98 [ 8.848236] fe80: c01cb928 00000000 cec1febc cec1fe98 c01cb0bc c01cb934 cec03a58 c04dac98 [ 8.856933] fea0: c04f23ac ced4d180 c04f28b8 00000000 cec1fecc cec1fec0 c01cb6c8 c01cb078 [ 8.865600] fec0: cec1fefc cec1fed0 c01ca9e0 c01cb6b4 c04643e0 c05583e8 00000000 c04f23ac [ 8.874298] fee0: c05583e8 00000000 00000001 00000000 cec1ff24 cec1ff00 c01cbbbc c01ca944 [ 8.882995] ff00: c0030fec c05583e8 00000000 00000001 00000000 00000000 cec1ff34 cec1ff28 [ 8.891693] ff20: c01cca94 c01cbb30 cec1ff5c cec1ff38 c001d360 c01cca34 c01cca94 c01cbb30 [ 8.900360] ff40: cec1ff5c c0030fec c001d30c 00000000 cec1ffd4 cec1ff60 c003c2ec c001d318 [ 8.909057] ff60: cec1ff8c cec1ff70 c0113f78 c0113c28 cec1ff00 cec409c0 c0114078 c04e757c [ 8.917755] ff80: cec1ffbc cec1ff90 c00a38f4 c0113f00 c01ca39c 00313533 00000000 c0030000 [ 8.926452] ffa0: 00000170 c04e7978 00000000 00000000 c0030fec c00313e0 00000000 00000000 [ 8.935119] ffc0: 00000000 00000000 cec1fff4 cec1ffd8 c0008424 c003c29c 00000000 00000001 [ 8.943817] ffe0: 00000000 00000000 00000000 cec1fff8 c0072738 c00083a4 00000000 00000000 [ 8.952514] Backtrace: [ 8.955078] [<c004e224>] (sr_vp_disable_both+0x0/0x80) from [<c004f544>] (program_opp+0x80/0x1d0) [ 8.964385] r5:00000002 r4:cec1e000 [ 8.968139] [<c004f4c4>] (program_opp+0x0/0x1d0) from [<c004f7d4>] (resource_set_opp_level+0x140/0x16c) [ 8.977996] [<c004f694>] (resource_set_opp_level+0x0/0x16c) from [<c004f89c>] (set_opp+0x9c/0xb8) [ 8.987304] r8:00000001 r7:00000002 r6:c04da0a8 r5:00000000 r4:00000000 [ 8.994354] [<c004f800>] (set_opp+0x0/0xb8) from [<c0058d44>] (update_resource_level+0x5c/0x80) [ 9.003479] r5:00000000 r4:c04da0a8 [ 9.007232] [<c0058ce8>] (update_resource_level+0x0/0x80) from [<c0059294>] (resource_release+0xb0/0xd0) [ 9.017181] r7:00000002 r6:c04dac68 r5:c04da0cc r4:c04da0a8 [ 9.023132] [<c00591e4>] (resource_release+0x0/0xd0) from [<c0058ae8>] (omap_pm_set_min_bus_tput+0x4c/0x68) [ 9.033355] r7:00000002 r6:00000000 r5:00000000 r4:c0558be8 [ 9.039306] [<c0058a9c>] (omap_pm_set_min_bus_tput+0x0/0x68) from [<c01b7dc8>] (DisableSGXClocks+0x28/0x90) [ 9.049530] [<c01b7da0>] (DisableSGXClocks+0x0/0x90) from [<c01b7928>] (SysInitialise+0x304/0x33c) [ 9.058929] r5:00000000 r4:c0558bb8 [ 9.062683] [<c01b7624>] (SysInitialise+0x0/0x33c) from [<c01a2e98>] (PVRSRVDriverProbe+0x28/0x44) [ 9.072082] [<c01a2e70>] (PVRSRVDriverProbe+0x0/0x44) from [<c01cc618>] (platform_drv_probe+0x20/0x24) [ 9.081848] [<c01cc5f8>] (platform_drv_probe+0x0/0x24) from [<c01cb880>] (driver_probe_device+0xd0/0x178) [ 9.091888] [<c01cb7b0>] (driver_probe_device+0x0/0x178) from [<c01cb990>] (__driver_attach+0x68/0x8c) [ 9.101654] r7:00000000 r6:c04f23ac r5:c04dacf0 r4:c04dac68 [ 9.107604] [<c01cb928>] (__driver_attach+0x0/0x8c) from [<c01cb0bc>] (bus_for_each_dev+0x50/0x8c) [ 9.117004] r7:00000000 r6:c01cb928 r5:cec1fe98 r4:c04f23ac [ 9.122955] [<c01cb06c>] (bus_for_each_dev+0x0/0x8c) from [<c01cb6c8>] (driver_attach+0x20/0x28) [ 9.132171] r7:00000000 r6:c04f28b8 r5:ced4d180 r4:c04f23ac [ 9.138122] [<c01cb6a8>] (driver_attach+0x0/0x28) from [<c01ca9e0>] (bus_add_driver+0xa8/0x208) [ 9.147247] [<c01ca938>] (bus_add_driver+0x0/0x208) from [<c01cbbbc>] (driver_register+0x98/0x120) [ 9.156646] r8:00000000 r7:00000001 r6:00000000 r5:c05583e8 r4:c04f23ac [ 9.163696] [<c01cbb24>] (driver_register+0x0/0x120) from [<c01cca94>] (platform_driver_register+0x6c/0x88) [ 9.173919] r9:00000000 r8:00000000 r7:00000001 r6:00000000 r5:c05583e8 [ 9.180755] r4:c0030fec [ 9.183502] [<c01cca28>] (platform_driver_register+0x0/0x88) from [<c001d360>] (PVRCore_Init+0x54/0x1a0) [ 9.193481] [<c001d30c>] (PVRCore_Init+0x0/0x1a0) from [<c003c2ec>] (__exception_text_end+0x5c/0x194) [ 9.203155] r6:00000000 r5:c001d30c r4:c0030fec [ 9.208007] [<c003c290>] (__exception_text_end+0x0/0x194) from [<c0008424>] (kernel_init+0x8c/0xfc) [ 9.217498] r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c00313e0 [ 9.224334] r4:c0030fec [ 9.227081] [<c0008398>] (kernel_init+0x0/0xfc) from [<c0072738>] (do_exit+0x0/0x784) [ 9.235321] r5:00000000 r4:00000000 [ 9.239074] Code: e24cb004 e59f3064 e7e102d0 e5933000 (e5d32000) [ 9.245574] ---[ end trace 712ea8b08e905fc9 ]--- -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
