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author | Alexander Gordeev <lasaine@lvk.cs.msu.su> | 2011-01-12 17:00:53 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-13 08:03:20 -0800 |
commit | 2a5cd6e2fb1984cc83f08b3645bf394830ac7825 (patch) | |
tree | 14082324f971c3d8af26840caf9d68a4524269b7 /Documentation/sound | |
parent | 083e58666ff5b3c5750d9a5c0560018b03cfb4b2 (diff) | |
download | linux-2a5cd6e2fb1984cc83f08b3645bf394830ac7825.tar.bz2 |
pps: make idr lock a mutex and protect idr_pre_get
Now pps_idr_lock is never used in interrupt context so we can replace
spin_lock_irq/spin_unlock_irq with plain spin_lock/spin_unlock. But
there is also a potential race condition when someone can steal an id
which was allocated by idr_pre_get before it is used. So convert spin
lock to mutex and protect the whole id generation process.
Signed-off-by: Alexander Gordeev <lasaine@lvk.cs.msu.su>
Cc: Rodolfo Giometti <giometti@linux.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/sound')
0 files changed, 0 insertions, 0 deletions