From: Michal Ostrowski <mostrows@watson.ibm.com>
To: linux-kernel@vger.kernel.org
Subject: BUG? [PATCH] driver core: Add the ability to bind drivers to devices from userspace
Date: Wed, 17 Aug 2005 19:43:48 -0400 [thread overview]
Message-ID: <20050817194348.3fb5b3d0@brick.watson.ibm.com> (raw)
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If a driver's probe function returns -ENXIO or -ENODEV,
driver_probe_device() will translate that to return 0 (comments argue it
is not an error).
Consequently driver_bind() will return 0 resulting in the write
system-call that initiated all of this in returning 0 as well.
If one uses "echo" to write to a "bind" attribute, echo will
continuously call write() trying to write to the attribute and always
get 0 as a result and thus find itself in a loop trying to do the write.
Perhaps the translation of -ENZIO to -ENODEV to success in
driver_probe_device() is not approriate here?
--
Michal Ostrowski
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reply other threads:[~2005-08-17 23:43 UTC|newest]
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