On 11.6.2015 15:53, Alan Stern wrote:
On Thu, 11 Jun 2015, Jiří Prchal wrote:
Hi all,
I discovered some bug when I change kernel from 3.18.13 to 3.18.14. I have board with usb hub CY7C65632 on it.
In .13 it works fine but in .14 it repeats this message:
[ 19.170000] usb 2-3: new full-speed USB device number 56 using at91_ohci
and devices connected to usb through hub doesn't appear at all.
Any idea?
Try using git bisect to find the commit which caused this problem to
start.
This is result:
Bisecting: 0 revisions left to test after this (roughly 0 steps)
[ae74ea64ccdb8b99ee2618b58020263d5b1d9b22] clk: at91: usb: propagate rate modification to the parent clk
Compilation has some warnings:
CC drivers/clk/at91/clk-usb.o
drivers/clk/at91/clk-usb.c:157:2: warning: initialization from incompatible pointer type [enabled by default]
drivers/clk/at91/clk-usb.c:157:2: warning: (near initialization for ‘at91sam9x5_usb_ops.determine_rate’) [enabled by
default]
drivers/clk/at91/clk-usb.c:195:2: warning: initialization from incompatible pointer type [enabled by default]
drivers/clk/at91/clk-usb.c:195:2: warning: (near initialization for ‘at91sam9n12_usb_ops.determine_rate’) [enabled by
default]
And kernel hangs up with this:
[ 4.480000] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 4.480000] ehci-atmel: EHCI Atmel driver
[ 4.490000] Unable to handle kernel paging request at virtual address 1c9c3800
[ 4.500000] pgd = c0004000
[ 4.500000] [1c9c3800] *pgd=00000000
[ 4.500000] Internal error: Oops: 805 [#1] PREEMPT ARM
[ 4.500000] Modules linked in:
[ 4.500000] CPU: 0 PID: 1 Comm: swapper Tainted: G W 3.18.13_cpm9g25+ #10
[ 4.500000] task: c7821b00 ti: c7828000 task.ti: c7828000
[ 4.500000] PC is at at91sam9x5_clk_usb_determine_rate+0xb8/0x120
[ 4.500000] LR is at at91sam9x5_clk_usb_determine_rate+0xb4/0x120
[ 4.500000] pc : [<c0392f3c>] lr : [<c0392f38>] psr: a0000013
[ 4.500000] sp : c7829d28 ip : c7829d28 fp : c7829d64
[ 4.500000] r10: c7802ae0 r9 : c7806400 r8 : 02dc6c00
[ 4.500000] r7 : 00000000 r6 : 00000001 r5 : ffffffff r4 : 02dc6c00
[ 4.500000] r3 : 17d78400 r2 : 1c9c3800 r1 : 14fb1800 r0 : c7802860
[ 4.500000] Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel
[ 4.500000] Control: 0005317f Table: 20004000 DAC: 00000017
[ 4.500000] Process swapper (pid: 1, stack limit = 0xc78281b8)
[ 4.500000] Stack: (0xc7829d28 to 0xc782a000)
[ 4.500000] 9d20: 00000000 17d78400 14fb1800 17d78400 c7a26400 c7806580
[ 4.500000] 9d40: c7806480 c0731fb8 c7a26400 00000026 00000000 c06a7dd0 c7829d8c c7829d68
[ 4.500000] 9d60: c038d574 c0392e94 c7806480 1c9c3800 c7806580 02dc6c00 c0731fb8 c7a26400
[ 4.500000] 9d80: c7829da4 c7829d90 c038ded8 c038d50c c79a5400 c79a5410 c7829dcc c7829da8
[ 4.500000] 9da0: c033e620 c038de8c c033e458 c79a5410 ffffffed c06ec394 00000000 c0696f58
[ 4.500000] 9dc0: c7829dec c7829dd0 c02bd9e4 c033e468 c02bd98c c79a5410 00000000 c06ec394
[ 4.500000] 9de0: c7829e0c c7829df0 c02bbe80 c02bd99c c79a5410 c79a5444 c06ec394 c02bbfcc
[ 4.500000] 9e00: c7829e2c c7829e10 c02bc044 c02bbdd0 c02bbfcc 00000000 c7829e30 c06ec394
[ 4.500000] 9e20: c7829e54 c7829e30 c02ba428 c02bbfdc c78687ec c799b490 c06ec394 c79e4d00
[ 4.500000] 9e40: 00000000 c06e4038 c7829e64 c7829e58 c02bb984 c02ba3d4 c7829e8c c7829e68
[ 4.500000] 9e60: c02bb5f8 c02bb96c c05d0c60 c7829e78 c06ec394 c06cd5d8 c06cd5d8 c06ff700
[ 4.500000] 9e80: c7829ea4 c7829e90 c02bca48 c02bb528 00000000 c06cd5d8 c7829eb4 c7829ea8
[ 4.500000] 9ea0: c02bd840 c02bc9ac c7829ecc c7829eb8 c0696f94 c02bd7f8 00000000 c7a31dc0
[ 4.500000] 9ec0: c7829f54 c7829ed0 c0008acc c0696f68 00000000 c0042664 00000000 c0034c1c
[ 4.500000] 9ee0: c7ffc978 c7ffc900 c7829f0c c7829ef8 c0034c1c c0034ba4 c7ffc975 00000000
[ 4.500000] 9f00: c7829f54 c7829f10 c0034e48 c06745f4 c7829f2c c060ba60 00000006 00000006
[ 4.500000] 9f20: 0000007b 1aadfd66 c7829f54 00000006 c06a7dc4 c06c0df4 c06ff700 0000007b
[ 4.500000] 9f40: 00000000 c06a7dd0 c7829f94 c7829f58 c0674de4 c00089c8 00000006 00000006
[ 4.500000] 9f60: c06745e4 c003bb38 c7829f94 c7829f78 00000000 c04989a0 00000000 00000000
[ 4.500000] 9f80: 00000000 00000000 c7829fac c7829f98 c04989b8 c0674d00 c7828000 00000000
[ 4.500000] 9fa0: 00000000 c7829fb0 c0009790 c04989b0 00000000 00000000 00000000 00000000
[ 4.500000] 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 4.500000] 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 a8210092 a39c4870
[ 4.500000] [<c0392f3c>] (at91sam9x5_clk_usb_determine_rate) from [<c038d574>] (clk_calc_new_rates+0x78/0x174)
[ 4.500000] [<c038d574>] (clk_calc_new_rates) from [<c038ded8>] (clk_set_rate+0x5c/0xa4)
[ 4.500000] [<c038ded8>] (clk_set_rate) from [<c033e620>] (ehci_atmel_drv_probe+0x1c8/0x308)
[ 4.500000] [<c033e620>] (ehci_atmel_drv_probe) from [<c02bd9e4>] (platform_drv_probe+0x58/0xa0)
[ 4.500000] [<c02bd9e4>] (platform_drv_probe) from [<c02bbe80>] (driver_probe_device+0xc0/0x20c)
[ 4.500000] [<c02bbe80>] (driver_probe_device) from [<c02bc044>] (__driver_attach+0x78/0x9c)
[ 4.500000] [<c02bc044>] (__driver_attach) from [<c02ba428>] (bus_for_each_dev+0x64/0xa0)
[ 4.500000] [<c02ba428>] (bus_for_each_dev) from [<c02bb984>] (driver_attach+0x28/0x30)
[ 4.500000] [<c02bb984>] (driver_attach) from [<c02bb5f8>] (bus_add_driver+0xe0/0x1e4)
[ 4.500000] [<c02bb5f8>] (bus_add_driver) from [<c02bca48>] (driver_register+0xac/0xf0)
[ 4.500000] [<c02bca48>] (driver_register) from [<c02bd840>] (__platform_driver_register+0x58/0x6c)
[ 4.500000] [<c02bd840>] (__platform_driver_register) from [<c0696f94>] (ehci_atmel_init+0x3c/0x58)
[ 4.500000] [<c0696f94>] (ehci_atmel_init) from [<c0008acc>] (do_one_initcall+0x114/0x204)
[ 4.500000] [<c0008acc>] (do_one_initcall) from [<c0674de4>] (kernel_init_freeable+0xf4/0x1bc)
[ 4.500000] [<c0674de4>] (kernel_init_freeable) from [<c04989b8>] (kernel_init+0x18/0xf4)
[ 4.500000] [<c04989b8>] (kernel_init) from [<c0009790>] (ret_from_fork+0x14/0x20)
[ 4.500000] Code: e50b1034 e50b3038 ebffe315 e59b2008 (e5820000)
[ 4.920000] ---[ end trace f24b6c88ae00fa9b ]---
[ 4.920000] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
[ 4.920000]
[ 4.920000] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
Jiri
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