| commit | 1dacb395d68a14825ee48c0843335e3181aea675 | |
| author | Amos Kong <akong@redhat.com> | |
| Mon, 8 Dec 2014 08:50:36 +0000 (8 16:50 +0800) | ||
| committer | Herbert Xu <herbert@gondor.apana.org.au> | |
| Mon, 22 Dec 2014 12:02:38 +0000 (22 23:02 +1100) | ||
| tree | 55b22c3c63081c224b168bd09e2dd19eb52d6fa8 | treesnapshot (tar.gz zip) |
| parent | 9372b35e11149c5314f56f939775e67d83057604 | commitdiff |
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>
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 | diffblobblamehistory |