Using GPMI-NAND driver on iMX28 using 3.4-rc1?

[Sam Gandhi]

On Wed, Apr 4, 2012 at 1:55 PM, Fabio Estevam <festevam at gmail.com> wrote:
> On Wed, Apr 4, 2012 at 5:27 PM, Sam Gandhi <samgandhi9 at gmail.com> wrote:
>
>> However moment I try to do  flash_erase /dev/mtd1 0 0 I see following error:
>>
>> kernel BUG at /home/sam/linux/drivers/dma/dmaengine.h:53!
>> Internal error: Oops - BUG: 0 [#1] PREEMPT ARM
>> Modules linked in:
>> CPU: 0    Not tainted  (3.4.0-rc1-09874-g9e81810-dirty #6)
>> PC is at mxs_dma_int_handler+0xfc/0x16c
>> LR is at handle_irq_event_percpu+0xc4/0x258
>> pc : [<c024c924>]    lr : [<c006e47c>]    psr: 60000093
>> sp : c3b99b00  ip : c3b99b28  fp : c3b99b24
>> r10: 00000000  r9 : c0529058  r8 : 00000000
>> r7 : 00000010  r6 : 00000004  r5 : c3811000  r4 : 00000004
>> r3 : c38111e0  r2 : 00000000  r1 : 00000000  r0 : 00000058
>> Flags: nZCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment user
>> Control: 0005317f  Table: 42ce4000  DAC: 00000015
>> Process flash_erase (pid: 1214, stack limit = 0xc3b98270)
>
> Please try reverting commit 00292bbf. Check
> http://www.spinics.net/lists/kernel/msg1321399.html

I reverted that commit and I still see following  error!

flash_erase /dev/mtd1 0 0
Erasing 1------------[ cut here ]------------
kernel BUG at /home/sam/linux/drivers/dma/dmaengine.h:53!
Internal error: Oops - BUG: 0 [#1] PREEMPT ARM
Modules linked in:
CPU: 0    Not tainted  (3.4.0-rc1-09876-g2e4bb28-dirty #1)
PC is at mxs_dma_int_handler+0xfc/0x16c
LR is at handle_irq_event_percpu+0xc4/0x258
pc : [<c024c924>]    lr : [<c006e47c>]    psr: 60000093
sp : c3aadb00  ip : c3aadb28  fp : c3aadb24
r10: 00000000  r9 : c0529058  r8 : 00000000
r7 : 00000010  r6 : 00000004  r5 : c3811000  r4 : 00000004
r3 : c38111e0  r2 : 00000000  r1 : 00000000  r0 : 00000058
Flags: nZCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment user
Control: 0005317f  Table: 42cd8000  DAC: 00000015
Process flash_erase (pid: 1205, stack limit = 0xc3aac270)
Stack: (0xc3aadb00 to 0xc3aae000)
db00: c026514c c006e5d4 c39c5800 00000058 f5000000 c3aadc0c c3aadb64 c3aadb28
db20: c006e47c c024c838 c3aadb54 c3aadb38 c000c5a8 c000b0dc c000b0fc c0529058
db40: c39c5800 f5000000 c3aadc0c ffffffff 00000000 00000000 c3aadb7c c3aadb68
db60: c006e674 c006e3c8 c0529058 00000000 c3aadb94 c3aadb80 c0071040 c006e620
db80: c0070f7c 00000058 c3aadbac c3aadb98 c006dcc0 c0070f8c 00000130 00000058
dba0: c3aadbc4 c3aadbb0 c0009f1c c006dca0 c024c338 20000013 c3aadbd4 c3aadbc8
dbc0: c0008648 c0009ebc c3aadc34 c3aadbd8 c03a3894 c0008640 00007efa f5004000
dbe0: 00000300 c3811268 c3811294 c3811294 00000000 c3811268 ffffffff 00000000
dc00: 00000000 c3aadc34 f5004000 c3aadc20 c024c32c c024c338 20000013 ffffffff
dc20: c024c308 c390b000 c3aadc54 c3aadc38 c0291ad8 c024c318 00000001 c390b000
dc40: 00000000 c390b4dc c3aadc8c c3aadc58 c0292600 c0291a9c 00000003 00000000
dc60: 00000006 00830001 00000000 00000000 c390b000 00000070 ffffffff c390b078
dc80: c3aadca4 c3aadc90 c02910f4 c0292500 c02910a0 c390b298 c3aadccc c3aadca8
dca0: c028cb40 c02910b0 c390b078 c390b298 c390b298 00000000 0000000b c2cd45c0
dcc0: c3aadce4 c3aadcd0 c0288f44 c028ca48 c390b078 c2cb9540 c3aadd84 c3aadce8
dce0: c028d7ec c0288f18 00020000 00000000 c026514c c006e5d4 00000000 00000000
dd00: c2cb9540 00000040 00000000 00000000 045e0000 00000000 00000000 00000000
dd20: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
dd40: 00000000 00000000 00000000 00000000 00000000 00000000 c3aadd84 00a00000
dd60: 00000000 c2cb9540 c39da000 00000238 00000000 c2cd45c0 c3aadd94 c3aadd88
dd80: c028db74 c028d720 c3aaddbc c3aadd98 c0284018 c028db68 c0283fd8 becdd8f0
dda0: c39da000 03be0000 00000000 00020000 c3aadde4 c3aaddc0 c0281648 c0283fe8
ddc0: c028609c becdd8f0 c3aadef8 c2cb9540 c3aac000 c3aac000 c3aadf24 c3aadde8
dde0: c0286b38 c02815d8 c000c5a8 c000b0dc c000b0fc c3aac000 00000000 c2cd45c0
de00: c00497a8 00000000 00000000 c000c594 c3aade64 c3aade50 c03a5978 c0260854
de20: 00000000 c03a5978 c3aade54 c3aade38 c000c5a8 c01dc574 00000003 00000001
de40: c3aade9c c3aade50 c01dc574 c007374c c3aade7c c3aade60 c000c5a8 c000b0dc
de60: c000b0fc 0007ffff 00000000 ffffffff 00000003 00000000 00000001 c3b3a980
de80: c38bba08 000000a4 c3aadec4 c2cf8b80 c3aadeb4 c3aadea0 c01e1c48 c01dc4c8
dea0: c3aadec4 00000000 c3aadf54 c3aadeb8 c01e1d04 c01e1c04 00000000 c03a58c4
dec0: 00000000 00000001 00000000 c38bb830 c34a6500 00000000 00000000 00000000
dee0: 03be0000 00000000 00020000 00000000 00000000 00000000 c3aadef8 c3aadef8
df00: c053e0c0 c38bba00 becdd8f0 40104d14 00000000 00000000 c3aadf44 c3aadf28
df20: c02871f8 c02866e4 becdd8f0 00005452 40104d14 00000003 c3aadf54 c3aadf48
df40: c00eb238 c02871cc c3aadf74 c3aadf58 c00ebf2c c00eb214 c3aadf74 c3aadf68
df60: c38bba00 becdd8f0 c3aadfa4 c3aadf78 c00ebfb0 c00ebd78 c3aadf9c 00000000
df80: c0009f20 becdd958 00013008 00000003 00000036 c00091a8 00000000 c3aadfa8
dfa0: c0008f40 c00ebf60 becdd958 00013008 00000003 40104d14 becdd8f0 00000001
dfc0: becdd958 00013008 00000003 00000036 000001df 00000000 00000008 00000000
dfe0: 00000000 becdd8e0 b6eb4f28 b6e3926c 20000010 00000003 00000001 00000000
Backtrace:
[<c024c828>] (mxs_dma_int_handler+0x0/0x16c) from [<c006e47c>]
(handle_irq_event_percpu+0xc4/0x258)
 r7:c3aadc0c r6:f5000000 r5:00000058 r4:c39c5800
[<c006e3b8>] (handle_irq_event_percpu+0x0/0x258) from [<c006e674>]
(handle_irq_event+0x64/0x84)
[<c006e610>] (handle_irq_event+0x0/0x84) from [<c0071040>]
(handle_level_irq+0xc4/0xf8)
 r5:00000000 r4:c0529058
[<c0070f7c>] (handle_level_irq+0x0/0xf8) from [<c006dcc0>]
(generic_handle_irq+0x30/0x40)
 r4:00000058 r3:c0070f7c
[<c006dc90>] (generic_handle_irq+0x0/0x40) from [<c0009f1c>]
(handle_IRQ+0x70/0x94)
 r4:00000058 r3:00000130
[<c0009eac>] (handle_IRQ+0x0/0x94) from [<c0008648>] (asm_do_IRQ+0x18/0x1c)
 r5:20000013 r4:c024c338
[<c0008630>] (asm_do_IRQ+0x0/0x1c) from [<c03a3894>] (__irq_svc+0x34/0x78)
Exception stack(0xc3aadbd8 to 0xc3aadc20)
dbc0:                                                       00007efa f5004000
dbe0: 00000300 c3811268 c3811294 c3811294 00000000 c3811268 ffffffff 00000000
dc00: 00000000 c3aadc34 f5004000 c3aadc20 c024c32c c024c338 20000013 ffffffff
[<c024c308>] (mxs_dma_tx_submit+0x0/0x44) from [<c0291ad8>]
(start_dma_without_bch_irq+0x4c/0xa0)
 r4:c390b000 r3:c024c308
[<c0291a8c>] (start_dma_without_bch_irq+0x0/0xa0) from [<c0292600>]
(gpmi_send_command+0x110/0x120)
 r6:c390b4dc r5:00000000 r4:c390b000 r3:00000001
[<c02924f0>] (gpmi_send_command+0x0/0x120) from [<c02910f4>]
(gpmi_cmd_ctrl+0x54/0x78)
 r7:c390b078 r6:ffffffff r5:00000070 r4:c390b000
[<c02910a0>] (gpmi_cmd_ctrl+0x0/0x78) from [<c028cb40>]
(nand_command_lp+0x108/0x260)
 r4:c390b298 r3:c02910a0
[<c028ca38>] (nand_command_lp+0x0/0x260) from [<c0288f44>]
(nand_check_wp+0x3c/0x60)
[<c0288f08>] (nand_check_wp+0x0/0x60) from [<c028d7ec>]
(nand_erase_nand+0xdc/0x448)
 r5:c2cb9540 r4:c390b078
[<c028d710>] (nand_erase_nand+0x0/0x448) from [<c028db74>]
(nand_erase+0x1c/0x20)
[<c028db58>] (nand_erase+0x0/0x20) from [<c0284018>] (part_erase+0x40/0x8c)
[<c0283fd8>] (part_erase+0x0/0x8c) from [<c0281648>] (mtd_erase+0x80/0x94)
 r8:00020000 r7:00000000 r6:03be0000 r5:c39da000 r4:becdd8f0
r3:c0283fd8
[<c02815c8>] (mtd_erase+0x0/0x94) from [<c0286b38>] (mtdchar_ioctl+0x464/0xae8)
 r9:c3aac000 r8:c3aac000 r7:c2cb9540 r6:c3aadef8 r4:becdd8f0
r3:c028609c
[<c02866d4>] (mtdchar_ioctl+0x0/0xae8) from [<c02871f8>]
(mtdchar_unlocked_ioctl+0x3c/0x54)
[<c02871bc>] (mtdchar_unlocked_ioctl+0x0/0x54) from [<c00eb238>]
(vfs_ioctl+0x34/0x50)
 r7:00000003 r6:40104d14 r5:00005452 r4:becdd8f0
[<c00eb204>] (vfs_ioctl+0x0/0x50) from [<c00ebf2c>] (do_vfs_ioctl+0x1c4/0x1e8)
[<c00ebd68>] (do_vfs_ioctl+0x0/0x1e8) from [<c00ebfb0>] (sys_ioctl+0x60/0x84)
 r5:becdd8f0 r4:c38bba00
[<c00ebf50>] (sys_ioctl+0x0/0x84) from [<c0008f40>] (ret_fast_syscall+0x0/0x2c)
 r8:c00091a8 r7:00000036 r6:00000003 r5:00013008 r4:becdd958
Code: 1a000006 e59310b4 e3510000 ca000000 (e7f001f2)
28 Kibyte @ 35c0000 -- 2---[ end trace 5deaba3c2a545554 ]---