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| author | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2007-02-03 16:48:51 +0100 |
|---|---|---|
| committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2007-02-08 21:36:01 +0100 |
| commit | 0fe4c6fcacb28bda75b31f63d3629f640a6b9bf9 (patch) | |
| tree | 8a9592c155aa4f11b74fcab4d79772ba527b88a6 /drivers/ieee1394/nodemgr.c | |
| parent | 12ba145c9406da72c8288245f352de7f37188f1f (diff) | |
| download | linux-0fe4c6fcacb28bda75b31f63d3629f640a6b9bf9.tar.bz2 | |
ieee1394: raw1394: prevent unloading of low-level driver
Unloading the low-level driver module of a FireWire host can lead to
all sorts of trouble if a raw1394 userspace client is using the host.
Just disallow it by incrementing the LLD's module reference count on
a RAW1394_REQ_SET_CARD write operation. Decrement it when the file
is closed.
This feature wouldn't be relevant if "modprobe -r video1394" or
"modprobe -r dv1394" didn't automatically unload ohci1394 too.
http://bugzilla.kernel.org/show_bug.cgi?id=7701
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Dan Dennedy <dan@dennedy.org>
Diffstat (limited to 'drivers/ieee1394/nodemgr.c')
0 files changed, 0 insertions, 0 deletions