staging: comedi: use refcount in sysfs attribute handlers
authorIan Abbott <abbotti@mev.co.uk>
Fri, 8 Nov 2013 15:03:37 +0000 (15:03 +0000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 12 Nov 2013 00:16:44 +0000 (16:16 -0800)
commitbe535c9a058b73600666d5431cfb442f39989a33
tree10490f6bdbb2e78f39b7f24d60a596cbdd989bf7
parent616a3548e816553c31d57cc211a86d327a192e12
staging: comedi: use refcount in sysfs attribute handlers

Call `comedi_dev_get_from_minor()` instead of `comedi_dev_from_minor()`
in the sysfs attribute handler functions to increment the reference of
the `struct comedi_device` during the operation.  Call
`comedi_dev_put()` to decrement the reference afterwards.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/comedi/comedi_fops.c