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usbcore: cdev lock_kernel() pushdown
authorJonathan Corbet <corbet@lwn.net>
Thu, 15 May 2008 22:24:25 +0000 (16:24 -0600)
committerJonathan Corbet <corbet@lwn.net>
Fri, 20 Jun 2008 20:05:49 +0000 (14:05 -0600)
usb_open() is protected by a down_read(&minor_rwsem), but I'm not sure I
trust it to protect everything including subsidiary open() functions.

Signed-off-by: Jonathan Corbet <corbet@lwn.net>

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