[Orinoco-devel] 2.6.28-rc2: new PCMCIA device instance after resume - orinoco can't download firmware

[Dave]

Andrey Borzenkov wrote:
> On Wednesday 29 October 2008, Rafael J. Wysocki wrote:
>>> Do you have any idea what could it be? Original message is here:
>>> http://marc.info/?l=linux-wireless&m=122522165719760&w=2
>> This probably is a result of the fact that we don't include firmware blobs
>> into modular drivers any more.  Please try to compile your driver directly
>> into the kernel and enable CONFIG_FIRMWARE_IN_KERNEL.
>>
>> If this helps, we'll know what the problem is.
>>
> 
> Ehh ... you miss the point. The problem is NOT missing firmware (I have
> already been running with external firmware just fine in 2.6.27). The
> problem is that during resume instead of simply resume *existing*
> device/driver instance PCMCIA suddenly decides to re-discover the *same*
> device yet another again.
> 
> bisecting will
> take ages here. I need some advice which options to turn on.

I attempted to bisect, but ran into problems. As an alternative, I added
a WARN_ON(err) immediately after the request_firmware call to get a
stack dump:

orinoco_cs 0.0: firmware: requesting agere_sta_fw.bin
------------[ cut here ]------------
WARNING: at
/usr/src/linux-current/wireless-testing/drivers/net/wireless/orinoco.c:495
orinoco_dl_firmware+0xbb/0x1ce [orinoco]()
Modules linked in: orinoco_cs orinoco hermes_dld hermes michael_mic
aty128fb snd_maestro3 [last unloaded: hermes]
Pid: 22157, comm: bash Not tainted 2.6.28-rc2-wl #41
Call Trace:
 [<c0117a8c>] warn_on_slowpath+0x3e/0x57
 [<c019578a>] release_sysfs_dirent+0x50/0x60
 [<c0195b3d>] sysfs_addrm_finish+0x73/0x78
 [<c0195d03>] remove_dir+0x21/0x27
 [<c02a8901>] fw_dev_release+0x15/0x1d
 [<c022cfbe>] kobject_release+0x0/0x5
 [<c022d68b>] kref_put+0x3f/0x4c
 [<c02a8c7d>] _request_firmware+0x176/0x1bd
 [<d1083381>] orinoco_dl_firmware+0xbb/0x1ce [orinoco]
 [<d10836d0>] orinoco_download+0x1f/0x30 [orinoco]
 [<d1086b39>] orinoco_init+0x63/0x4aa [orinoco]
 [<c0362ee8>] __dev_get_by_name+0x18/0x72
 [<c03632ed>] __dev_alloc_name+0x110/0x128
 [<c03660e5>] netdev_init_queue_locks+0x29/0x41
 [<c03661e6>] register_netdevice+0x60/0x1d7
 [<c036638c>] register_netdev+0x2f/0x3b
 [<d10912a0>] orinoco_cs_config+0xe1/0x174 [orinoco_cs]
 [<c02ecdda>] pcmcia_device_probe+0xfa/0x144
 [<c0196200>] sysfs_do_create_link+0x3c/0x10f
 [<c02a559e>] __device_attach+0x0/0x5
 [<c02a54d9>] really_probe+0x70/0xea
 [<c02a5596>] driver_probe_device+0x34/0x3c
 [<c02a4a53>] bus_for_each_drv+0x38/0x59
 [<c02a55ee>] device_attach+0x4b/0x5e
 [<c02a559e>] __device_attach+0x0/0x5
 [<c02a4c00>] bus_attach_device+0x21/0x4f
 [<c02a3955>] device_add+0x147/0x272
 [<c02ed29b>] pcmcia_device_add+0x1ca/0x253
 [<c02ed3a1>] pcmcia_card_add+0x7d/0x8a       <----- ??
 [<c0112185>] dequeue_task_fair+0xf/0x10
 [<c0101c8d>] __switch_to+0x1d/0x139
 [<c011407b>] finish_task_switch+0x22/0x66
 [<c03e18fb>] __sched_text_start+0x2d3/0x2ec
 [<c022cf6d>] kobject_get+0xf/0x13
 [<c02a3a9e>] get_device+0xe/0x14
 [<c02e928a>] pcmcia_get_socket+0xe/0x7e
 [<c02edf0e>] ds_event+0x77/0x94
 [<c02e96b1>] send_event+0x84/0x9d
 [<c02e9bee>] socket_resume+0xa1/0xb5
 [<c02e9255>] pcmcia_socket_dev_resume+0x49/0x70
 [<c0238d42>] pci_legacy_resume+0x13/0x1a
 [<c0238e81>] pci_pm_resume+0x42/0x46
 [<c02a7887>] pm_op+0x2b/0x48
 [<c02a7a42>] resume_device+0x2e/0xa8
 [<c02a7b21>] dpm_resume+0x65/0xfc
 [<c02a7cf1>] device_resume+0x8/0x10
 [<c0135173>] suspend_devices_and_enter+0x72/0xa1
 [<c013521d>] enter_state+0x62/0x7a
 [<c013533f>] state_store+0x9f/0xb4
 [<c01352a0>] state_store+0x0/0xb4
 [<c022d0b8>] kobj_attr_store+0x18/0x1c
 [<c0194cf1>] flush_write_buffer+0x38/0x4c
 [<c0194d37>] sysfs_write_file+0x32/0x51
 [<c015eb9b>] vfs_write+0x81/0xf3
 [<c015ecab>] sys_write+0x3c/0x62
 [<c0102ced>] sysenter_do_call+0x12/0x21
---[ end trace 596cca76ed6aae6a ]---
eth1: Cannot find firmware agere_sta_fw.bin

?? Is that supposed to happen on resume?



Dave.