Re: em28xx driver crashes device

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On Thu, Jul 23, 2009 at 5:40 AM, Markus Rechberger<mrechberger@xxxxxxxxx> wrote:
> Hey,
>
> [24004.018614] EEPROM ID= 0x9567eb1a, hash = 0x1067368a
> [24004.018618] Vendor/Product ID= eb1a:2861
> [24004.018622] AC97 audio (5 sample rates)
> [24004.018626] 500mA max power
> [24004.018629] Table at 0x04, strings=0x206a, 0x0000, 0x0000
> [24004.049201]  failed!
> [24004.049210] em28xx #0: reading from i2c device failed (error=-71)
> [24004.049444]  failed!
> [24004.049451] em28xx #0: reading from i2c device failed (error=-71)
> [24004.049655]  failed!
> [24004.049659] em28xx #0: reading from i2c device failed (error=-71)
> [24004.049891]  failed!
> [24004.049895] em28xx #0: reading from i2c device failed (error=-71)
> [24004.050141]  failed!
> [24004.050145] em28xx #0: reading from i2c device failed (error=-71)
> [24004.050393]  failed!
> [24004.050396] em28xx #0: reading from i2c device failed (error=-71)
> [24004.050641]  failed!
> [24004.050644] em28xx #0: reading from i2c device failed (error=-71)
> [24004.050890]  failed!
> [24004.050894] em28xx #0: reading from i2c device failed (error=-71)
> [24004.051141]  failed!
> [24004.051145] em28xx #0: reading from i2c device failed (error=-71)
> [24004.051392]  failed!
> [24004.051395] em28xx #0: reading from i2c device failed (error=-71)
> [24004.051641]  failed!
> [24004.051645] em28xx #0: reading from i2c device failed (error=-71)
> [24004.051892]  failed!
> [24004.051895] em28xx #0: reading from i2c device failed (error=-71)
> [24004.052140]  failed!
> [24004.052143] em28xx #0: reading from i2c device failed (error=-71)
> [24004.052393]  failed!
> [24004.052396] em28xx #0: reading from i2c device failed (error=-71)
> [24004.052642]  failed!
> [24004.052645] em28xx #0: reading from i2c device failed (error=-71)
> [24004.052892]  failed!
> [24004.052895] em28xx #0: reading from i2c device failed (error=-71)
> [24004.057741]  failed!
> [24004.057746] em28xx #0: reading from i2c device failed (error=-71)
> [24004.057880]  failed!
> [24004.057884] em28xx #0: reading from i2c device failed (error=-71)
> [24004.058125]  failed!
> [24004.058129] em28xx #0: reading from i2c device failed (error=-71)
> [24004.058379]  failed!
> [24004.058383] em28xx #0: reading from i2c device failed (error=-71)
> [24004.058628]  failed!
> [24004.058633] em28xx #0: reading from i2c device failed (error=-71)
> [24004.058880]  failed!
> [24004.058883] em28xx #0: reading from i2c device failed (error=-71)
> [24004.059128]  failed!
> [24004.059131] em28xx #0: reading from i2c device failed (error=-71)
> [24004.059380]  failed!
> [24004.059383] em28xx #0: reading from i2c device failed (error=-71)
> [24004.059636]  failed!
> [24004.059640] em28xx #0: reading from i2c device failed (error=-71)
> [24004.059914]  failed!
> [24004.059917] em28xx #0: reading from i2c device failed (error=-71)
> [24004.060140]  failed!
> [24004.060145] em28xx #0: reading from i2c device failed (error=-71)
> [24004.060388]  failed!
> [24004.060392] em28xx #0: reading from i2c device failed (error=-71)
> [24004.060636]  failed!
> [24004.060640] em28xx #0: reading from i2c device failed (error=-71)
> [24004.060884]  failed!
> [24004.060887] em28xx #0: reading from i2c device failed (error=-71)
> [24004.061126]  failed!
> [24004.061132] em28xx #0: reading from i2c device failed (error=-71)
> [24004.062214]  failed!
> [24004.062219] em28xx #0: reading from i2c device failed (error=-71)
> [24004.062378]  failed!
> [24004.062383] em28xx #0: reading from i2c device failed (error=-71)
> [24004.062632]  failed!
> [24004.062636] em28xx #0: reading from i2c device failed (error=-71)
> [24004.062884]  failed!
> [24004.062889] em28xx #0: reading from i2c device failed (error=-71)
> [24004.063126]  failed!
> [24004.063131] em28xx #0: reading from i2c device failed (error=-71)
> [24004.063375]  failed!
> [24004.063380] em28xx #0: reading from i2c device failed (error=-71)
> [24004.063626]  failed!
> [24004.063631] em28xx #0: reading from i2c device failed (error=-71)
> [24004.063875]  failed!
> [24004.063880] em28xx #0: reading from i2c device failed (error=-71)
> [24004.064127]  failed!
> [24004.064132] em28xx #0: reading from i2c device failed (error=-71)
> [24004.064376]  failed!
> [24004.064380] em28xx #0: reading from i2c device failed (error=-71)
> [24004.064625]  failed!
> [24004.064630] em28xx #0: reading from i2c device failed (error=-71)
> [24004.064876]  failed!
> [24004.064881] em28xx #0: reading from i2c device failed (error=-71)
> [24004.065126]  failed!
> [24004.065130] em28xx #0: reading from i2c device failed (error=-71)
> [24004.065376]  failed!
> [24004.065381] em28xx #0: reading from i2c device failed (error=-71)
> [24004.065626]  failed!
> [24004.065632] em28xx #0: reading from i2c device failed (error=-71)
> [24004.065875]  failed!
> [24004.065880] em28xx #0: reading from i2c device failed (error=-71)
> [24004.066126]  failed!
> [24004.066131] em28xx #0: reading from i2c device failed (error=-71)
> [24004.066376]  failed!
> [24004.066381] em28xx #0: reading from i2c device failed (error=-71)
> [24004.066625]  failed!
> [24004.066629] em28xx #0: reading from i2c device failed (error=-71)
> [24004.066875]  failed!
> [24004.066880] em28xx #0: reading from i2c device failed (error=-71)
> [24004.066890] em28xx #0: Your board has no unique USB ID and thus
> need a hint to be detected.
> [24004.066900] em28xx #0: You may try to use card=<n> insmod option to
> workaround that.
> [24004.066908] em28xx #0: Please send an email with this log to:
> [24004.066916] em28xx #0:       V4L Mailing List <video4linux-list@xxxxxxxxxx>
> [24004.066924] em28xx #0: Board eeprom hash is 0x1067368a
>
>
> can someone just check for errors if one error occures stop it?
> We're facing that this driver crashes entire devices.
>
> regards,
> Markus
> --
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>

Hey Markus,

Could you stick a dump_stack() line in there so we can see where it is
stuck in the loop?

Thanks,

Devin

-- 
Devin J. Heitmueller - Kernel Labs
http://www.kernellabs.com
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