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(parent: 9372b35) | patch
hwrng: move some code out mutex_lock for avoiding underlying deadlock
authorAmos Kong <akong@redhat.com>
Mon, 8 Dec 2014 08:50:36 +0000 (16:50 +0800)
committerHerbert Xu <herbert@gondor.apana.org.au>
Mon, 22 Dec 2014 12:02:38 +0000 (23:02 +1100)
commit1dacb395d68a14825ee48c0843335e3181aea675
tree55b22c3c63081c224b168bd09e2dd19eb52d6fa8tree | snapshot (tar.gz zip)
parent9372b35e11149c5314f56f939775e67d83057604commit | diff
hwrng: move some code out mutex_lock for avoiding underlying deadlock

In next patch, we use reference counting for each struct hwrng,
changing reference count also needs to take mutex_lock. Before
releasing the lock, if we try to stop a kthread that waits to
take the lock to reduce the referencing count, deadlock will
occur.

Signed-off-by: Amos Kong <akong@redhat.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
drivers/char/hw_random/core.c diff | blob | blame | history