Hi Folks, With the latest linux-omap pm + gitorious bridge changes on SDP3430, enabling BRIDGE_DVFS and SRF seems to cause an issue with clock notifier.. I am not entirely of the cause of the issue(don't have a debugger handy at the moment :( ): The condition is reproducible on exactly the third insmod of the driver as explained below. Looking for any advice to fix this issue :( Codebase: git clone git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6.git git checkout -b pm --track origin/pm git fetch git://gitorious.org/lk/mainline.git tidspbridge-pm:tidspbridge-pm git checkout tidspbridge-pm git merge pm defconfig: essentially omap_3430sdp_defconfig, enable SRF and bridge+bridge_dvfs. (diff b/w defconfig and .config attached). Bootargs: console=ttyS0,115200n8 noinitrd ip=dhcp root=/dev/nfs rw nfsroot=<myIP>:<myFS>,nolock,wsize=1024,rsize=1024 mem=64M The error: insmod ./bridgedriver.ko phys_mempool_base=0x87000000 phys_mempool_size=0x600000 rmmod bridgedriver insmod ./bridgedriver.ko phys_mempool_base=0x87000000 phys_mempool_size=0x600000 rmmod bridgedriver insmod ./bridgedriver.ko phys_mempool_base=0x87000000 phys_mempool_size=0x600000 Unable to handle kernel paging request at virtual address 756e696c pgd = c3e0c000 *pgd=00000000[756e696c] Internal error: Oops: 5 [#1] Modules linked in:Modules linked in: bridgedriver(+) bridgedriver(+) [last unloaded: bridgedriver] [last unloaded: bridgedriver] CPU: 0 Not tainted (2.6.28-omap1-00211-gcb75442 #1) PC is at clk_notifier_register+0x68/0x108 LR is at kmem_cache_alloc+0x7c/0x84 pc : [<c003f684>] lr : [<c009f574>] psr: 00000093 sp : c3e05da0 ip : c3e0b3e0 fp : c3e05dbc <snip> Backtrace: Backtrace: [<c003f61c>] [<c003f61c>] (clk_notifier_register+0x0/0x108) (clk_notifier_register+0x0/0x108) from [<bf08d394>] from [<bf08d394>] (bridge_init+0x394/0x3ec [bridgedriver]) (bridge_init+0x394/0x3ec [bridgedriver]) r7:00000000 r7:00000000 r6:bf08ab88 r6:bf08ab88 r5:1dcd6500 r5:1dcd6500 r4:0ee6b280 r4:0ee6b280 [<bf08d000>] [<bf08d000>] (bridge_init+0x0/0x3ec [bridgedriver]) (bridge_init+0x0/0x3ec [bridgedriver]) from [<c002d2d4>] from [<c002d2d4>] (do_one_initcall+0x64/0x198) (do_one_initcall+0x64/0x198) r8:c002df28 r8:c002df28 r7:00000000 r7:00000000 r6:4023a000 r6:4023a000 r5:bf08a520 r5:bf08a520 r4:c03aa340 r4:c03aa340 [<c002d270>] [<c002d270>] (do_one_initcall+0x0/0x198) (do_one_initcall+0x0/0x198) from [<c0078cac>] from [<c0078cac>] (sys_init_module+0x98/0x188) (sys_init_module+0x98/0x188) [<c0078c14>] [<c0078c14>] (sys_init_module+0x0/0x188) (sys_init_module+0x0/0x188) from [<c002dd80>] from [<c002dd80>] (ret_fast_syscall+0x0/0x2c) (ret_fast_syscall+0x0/0x2c) r7:00000080 r7:00000080 r6:00000000 r6:00000000 r5:0000000b r5:0000000b r4:00000000 r4:00000000 Code: Code: e5943000 e5943000 e1530006 e1530006 0a000005 0a000005 e2424008 e2424008 (e5942008) (e5942008) <4>---[ end trace c53b9e94a29571d4 ]--- ---[ end trace c53b9e94a29571d4 ]--- Segmentation fault Regards, Nishanth Menon
Attachment:
sdp3430.defconfig.diff
Description: sdp3430.defconfig.diff
