Hi Tony, On Monday 19 Sep 2016 15:41:50 Tony Lindgren wrote: > * Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> [160919 13:35]: > > On Sunday 18 Sep 2016 08:19:02 Tony Lindgren wrote: > >>> [ 5.711303] [<c0872788>] (_raw_spin_unlock_irqrestore) from > >>> [<c069b260>] > >>> (musb_gadget_queue+0x128/0x4ac) > >>> [ 5.711303] [<c069b260>] (musb_gadget_queue) from [<c06a9ae4>] > >>> (usb_ep_queue+0x38/0x1d4) > >>> [ 5.729766] [<c06a9ae4>] (usb_ep_queue) from [<c06aba40>] > >>> (rx_submit+0xc8/0x19c) > >>> [ 5.737548] [<c06aba40>] (rx_submit) from [<c06abb90>] > >>> (rx_fill+0x7c/0xa0) [ 5.737548] [<c06abb90>] (rx_fill) from > >>> [<c06abbdc>] (eth_start+0x28/0x48) [ 5.751983] [<c06abbdc>] > >>> (eth_start) from [<c06abe7c>] (eth_open+0x6c/0x7c) [ 5.751983] > >>> [<c06abe7c>] (eth_open) from [<c0778c2c>] > >>> (__dev_open+0x9c/0x104) > >> > >> This could be something else though. Care to email me your .config, > >> maybe this is related to legacy g_ether being built in? > > > > Sure, please find it attached. The legacy g_ether is indeed built-in, > > that's what I use to boot over nfsroot. > > OK, I think g_ether may have issues in general.. > > I mostly test with configfs based gadgets and shell script as then I can > test load/configure/connect/disconnect/unconfigure/unload easily :) g_ether is very convenient when using nfsroot, as it allows booting the system without an initramfs. > >> Anyways, please also give the following patch a try. > > > > I've tested the patch and if fixes the original problem. Warm reboots are > > still broken though. > > No luck here with your .config a try with my pandaboard es against v4.8-rc7 > plus the patch I posted on Sunday. It reboots with no errors for me with > NFSroot. Do you do something other than just reboot? No, I perform the following steps: - Connect the panda board to the USB through USB (which powers the board on) - Let the board boot over NFS - Log in as root, run 'reboot' The second boot produces the warning. [ 5.189025] ------------[ cut here ]------------ [ 5.193450] WARNING: CPU: 0 PID: 1 at /home/laurent/src/kernel/omap4/linux-2.6/drivers/bus/omap_l3_noc.c:147 l3_interrupt_handler+0x220/0x348 [ 5.198059] 44000000.ocp:L3 Custom Error: MASTER MPU TARGET L4CFG (Read): Data Access in User mode during Functional access [ 5.218933] Modules linked in: [ 5.218933] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.8.0-rc2-00816- g0caf606bb84a #20 [ 5.222167] Hardware name: Generic OMAP4 (Flattened Device Tree) [ 5.233612] [<c01101b0>] (unwind_backtrace) from [<c010c10c>] (show_stack+0x10/0x14) [ 5.233612] [<c010c10c>] (show_stack) from [<c048ca40>] (dump_stack+0xa8/0xe0) [ 5.233612] [<c048ca40>] (dump_stack) from [<c0137910>] (__warn+0xd8/0x104) [ 5.253662] [<c0137910>] (__warn) from [<c01379e4>] (warn_slowpath_fmt+0x38/0x48) [ 5.253662] [<c01379e4>] (warn_slowpath_fmt) from [<c04befd0>] (l3_interrupt_handler+0x220/0x348) [ 5.277191] [<c04befd0>] (l3_interrupt_handler) from [<c019ec7c>] (__handle_irq_event_percpu+0x98/0x3ec) [ 5.277191] [<c019ec7c>] (__handle_irq_event_percpu) from [<c019efec>] (handle_irq_event_percpu+0x1c/0x58) [ 5.293426] [<c019efec>] (handle_irq_event_percpu) from [<c019f060>] (handle_irq_event+0x38/0x5c) [ 5.306610] [<c019f060>] (handle_irq_event) from [<c01a24e0>] (handle_fasteoi_irq+0xcc/0x1a4) [ 5.306610] [<c01a24e0>] (handle_fasteoi_irq) from [<c019e490>] (generic_handle_irq+0x18/0x28) [ 5.315582] [<c019e490>] (generic_handle_irq) from [<c019e5a4>] (__handle_domain_irq+0x64/0xdc) [ 5.315582] [<c019e5a4>] (__handle_domain_irq) from [<c010152c>] (gic_handle_irq+0x48/0x9c) [ 5.315582] [<c010152c>] (gic_handle_irq) from [<c086f930>] (__irq_svc+0x70/0x98) [ 5.350402] Exception stack(0xee8b7d18 to 0xee8b7d60) [ 5.350402] 7d00: 00000001 ee8b5328 [ 5.364288] 7d20: 00000000 ee8b4d80 60000153 eee54010 eee54010 60000153 00000002 c1603ae4 [ 5.364288] 7d40: c0d029cc 0000016b c0f19314 ee8b7d68 c019268c c086f5c0 20000153 ffffffff [ 5.381469] [<c086f930>] (__irq_svc) from [<c086f5c0>] (_raw_spin_unlock_irqrestore+0x34/0x44) [ 5.381469] [<c086f5c0>] (_raw_spin_unlock_irqrestore) from [<c06980d8>] (musb_gadget_queue+0x128/0x4ac) [ 5.390533] [<c06980d8>] (musb_gadget_queue) from [<c06a6920>] (usb_ep_queue+0x38/0x1d4) [ 5.408996] [<c06a6920>] (usb_ep_queue) from [<c06a887c>] (rx_submit+0xc8/0x19c) [ 5.408996] [<c06a887c>] (rx_submit) from [<c06a89cc>] (rx_fill+0x7c/0xa0) [ 5.408996] [<c06a89cc>] (rx_fill) from [<c06a8a18>] (eth_start+0x28/0x48) [ 5.431213] [<c06a8a18>] (eth_start) from [<c06a8cb8>] (eth_open+0x6c/0x7c) [ 5.431213] [<c06a8cb8>] (eth_open) from [<c0775a68>] (__dev_open+0x9c/0x104) [ 5.446044] [<c0775a68>] (__dev_open) from [<c0775cdc>] (__dev_change_flags+0x88/0x150) [ 5.446044] [<c0775cdc>] (__dev_change_flags) from [<c0775dc4>] (dev_change_flags+0x18/0x48) [ 5.454467] [<c0775dc4>] (dev_change_flags) from [<c0c515c4>] (ip_auto_config+0x194/0x1148) [ 5.454467] [<c0c515c4>] (ip_auto_config) from [<c0101870>] (do_one_initcall+0x3c/0x174) [ 5.480621] [<c0101870>] (do_one_initcall) from [<c0c00eb0>] (kernel_init_freeable+0x204/0x2e0) [ 5.480621] [<c0c00eb0>] (kernel_init_freeable) from [<c0868720>] (kernel_init+0x8/0x118) [ 5.480621] [<c0868720>] (kernel_init) from [<c0108430>] (ret_from_fork+0x14/0x24) [ 5.506347] ---[ end trace 9a597c69856245a5 ]--- -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
