I tried the ways you mentioned,but met some kernel panic here: request_suspend_state: sleep (0->3) at 114286010723 (2000-01-01 00:02:06.596801682 UTC) save exit: isCheckpointed 1 PM: Syncing filesystems ... done. Freezing user space processes ... (elapsed 0.03 seconds) done. Freezing remaining freezable tasks ... (elapsed 0.00 seconds) done. Unable to handle kernel NULL pointer dereference at virtual address 00000000 pgd = c0004000 [00000000] *pgd=00000000 Internal error: Oops: 0 [#1] Modules linked in: bmm CPU: 0 Not tainted (2.6.28 #217) PC is at 0x0 LR is at mmc_suspend_host+0x5c/0xe8 pc : [<00000000>] lr : [<c02b096c>] psr: 20000033 sp : c703fe58 ip : c707e880 fp : c703fe6c r10: 00000002 r9 : c703feb8 r8 : c054af80 r7 : c0529d4c r6 : 00000000 r5 : c0529ca0 r4 : c71ac400 r3 : 00000001 r2 : c0446f20 r1 : 60000013 r0 : c71ac400 Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA Thumb Segment kernel Control: 0000397f Table: a58a4018 DAC: 00000035 Process suspend (pid: 7, stack limit = 0xc703e270) Stack: (0xc703fe58 to 0xc7040000) fe40: c054ae84 c0529ca0 fe60: c703fe7c c703fe70 c02b88bc c02b091c c703fe8c c703fe80 c0206188 c02b88ac fe80: c703fe9c c703fe90 c020627c c0206174 c703feb4 c703fea0 c02084dc c0206234 fea0: c0529d74 c0529ca0 c703feec c703feb8 c02089ec c02084ac c052b8f4 c76ec2d4 fec0: c703fee4 c05c0060 00000003 c05c0060 00000003 00000000 00000000 00000000 fee0: c703ff0c c703fef0 c00a643c c0208764 c05c0524 00000003 c703e000 c703ffac ff00: c703ff24 c703ff10 c00a66b8 c00a63e8 c7001fa0 c053637c c703ff84 c703ff28 ff20: c00a7d70 c00a65c8 c701b9a0 00000015 c77e8080 c057c588 c703ff5c c703ff48 ff40: c0099530 c0099448 00000000 c5925cf0 c703ff74 c703ff60 c77e8080 c5925cc0 ff60: c701b9a0 c77e8080 c703ffa4 c703ff78 c7001fa0 c00a7c80 c703ffa4 c703ff88 ff80: c00912fc c00a7c8c c703ffac c703e000 c7001fa8 c7001fa0 c703ffdc c703ffa8 ffa0: c0091ef8 c009121c c03aa444 00000000 c701b9a0 c00954d0 c703ffb8 c703ffb8 ffc0: c7001fa0 c0091e54 00000000 00000000 c703fff4 c703ffe0 c0094fcc c0091e60 ffe0: 00000000 00000000 00000000 c703fff8 c0083030 c0094f88 00110000 10304400 Backtrace: [<c02b0910>] (mmc_suspend_host+0x0/0xe8) from [<c02b88bc>] (pxamci_suspend+0x1c/0x20) r5:c0529ca0 r4:c054ae84 [<c02b88a0>] (pxamci_suspend+0x0/0x20) from [<c0206188>] (platform_drv_suspend+0x20/0x24) [<c0206168>] (platform_drv_suspend+0x0/0x24) from [<c020627c>] (platform_pm_suspend+0x54/0x60) [<c0206228>] (platform_pm_suspend+0x0/0x60) from [<c02084dc>] (pm_op +0x3c/0x94) [<c02084a0>] (pm_op+0x0/0x94) from [<c02089ec>] (device_suspend +0x294/0x504) r5:c0529ca0 r4:c0529d74 [<c0208758>] (device_suspend+0x0/0x504) from [<c00a643c>] (suspend_devices_and_enter+0x60/0x170) [<c00a63dc>] (suspend_devices_and_enter+0x0/0x170) from [<c00a66b8>] (pm_suspend+0xfc/0x154) r7:c703ffac r6:c703e000 r5:00000003 r4:c05c0524 [<c00a65bc>] (pm_suspend+0x0/0x154) from [<c00a7d70>] (suspend +0xf0/0x11c) r5:c053637c r4:c7001fa0 [<c00a7c80>] (suspend+0x0/0x11c) from [<c00912fc>] (run_workqueue+0xec/ 0x19c) r5:c00a7c80 r4:c7001fa0 [<c0091210>] (run_workqueue+0x0/0x19c) from [<c0091ef8>] (worker_thread +0xa4/0x128) r6:c7001fa0 r5:c7001fa8 r4:c703e000 [<c0091e54>] (worker_thread+0x0/0x128) from [<c0094fcc>] (kthread +0x50/0x7c) r7:00000000 r6:00000000 r5:c0091e54 r4:c7001fa0 [<c0094f7c>] (kthread+0x0/0x7c) from [<c0083030>] (do_exit+0x0/0x798) r5:00000000 r4:00000000 Code: bad PC value. Kernel panic - not syncing: Fatal exception
how can I do for this?thanks On 7月21日, 下午9时17分, Xinyu Chen <muddo...@gmail.com> wrote: > On Jul 20, 5:10 pm, robert_mu <mjko...@126.com> wrote: > > > > > > > Hi everybody: > > I met a trouble and it confuse me a fews days,that is when my > > android wake up,sometimes occours some error aboutT flash card ,here > > is the log: > > sd 0:0:0:0: [sda] Starting disk > > mmc0: new SD card at address 5a61 > > mmc mmc0:5a61: parent mmc0 is sleeping, will not add > > −−−−−−−−−−−−[ cut here ]−−−−−−−−−−−− > > WARNING: at drivers/base/power/main.c:78 device_pm_add+0x6c/0xf0() > > > here is the trace: > > Call Trace: > > [warn_on_slowpath+95/144] warn_on_slowpath+0x5f/0x90 > > [device_pm_add+24/240] ? device_pm_add+0x18/0xf0 > > [device_pm_add+108/240] device_pm_add+0x6c/0xf0 > > [device_add+1092/1376] device_add+0x444/0x560 > > [_end+510110570/2109230024] :mmc_core:mmc_add_card+0xa2/0x140 > > [_end+510117927/2109230024] :mmc_core:mmc_attach_sd+0x17f/0x860 > > [_end+510109176/2109230024] ? :mmc_core:mmc_rescan+0x0/0x1c0 > > [_end+510109545/2109230024] :mmc_core:mmc_rescan+0x171/0x1c0 > > [run_workqueue+246/560] run_workqueue+0xf6/0x230 > > [worker_thread+167/288] worker_thread+0xa7/0x120 > > [autoremove_wake_function+0/64] ? autoremove_wake_function+0x0/0x40 > > [worker_thread+0/288] ? worker_thread+0x0/0x120 > > [kthread+73/144] kthread+0x49/0x90 > > [child_rip+10/18] child_rip+0xa/0x12 > > [restore_args+0/48] ? restore_args+0x0/0x30 > > [kthread+0/144] ? kthread+0x0/0x90 > > [child_rip+0/18] ? child_rip+0x0/0x12 > > > I found some conclusion about this: > > It's a result of the way the MMC core is written. There's an > > upper-level controller device, and below that is a host device, and > > below that is the card itself. The code that adds and removes children > > of the host device runs as part of the controller driver. > > Hence the problem: The driver adds children below the _host_ as soon > > as > > the _controller_ is resumed, even though the host is still suspended. > > It's not as big an error as it sounds -- the host was originally a > > class_device and then got converted over to a regular device. It > > doesn't have a driver of its own. > > This is one of the things that needs to be fixed up as part of the > > reworking of the system-sleep API. I simply haven't had any time to > > work on it (and I'm not likely to in the near future). > > > but I still don't know how to do,is there anyone show me a easy way to > > fix it ?givng source code and patch is better ：），thanks all > > PS：my linux kernel version：2.6.28 > > Try to enable CONFIG_MMC_UNSAFE_RESUME > > BR > Xinyu Chen- 隐藏被引用文字 - > > - 显示引用的文字 - --~--~---------~--~----~------------~-------~--~----~ unsubscribe: android-porting+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-porting -~----------~----~----~----~------~----~------~--~---
