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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-09-27 16:36:09 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-09-27 16:36:09 +0200 |
| commit | 5ecb11dd892f443d4900292edaba88a26efee8fe (patch) | |
| tree | d92c07b74431f862289a86230c66e2ef790f8980 /net/core/dev.c | |
| parent | 7c783601a3bc22a54cce0fb650259a983c8cafba (diff) | |
| parent | 5816b3e6577eaa676ceb00a848f0fd65fe2adc29 (diff) | |
Merge 5.15-rc3 into tty-next
We need the tty fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/core/dev.c')
| -rw-r--r-- | net/core/dev.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index 74fd402d26dd..7ee9fecd3aff 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -6923,12 +6923,16 @@ EXPORT_SYMBOL(napi_disable); */ void napi_enable(struct napi_struct *n) { - BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state)); - smp_mb__before_atomic(); - clear_bit(NAPI_STATE_SCHED, &n->state); - clear_bit(NAPI_STATE_NPSVC, &n->state); - if (n->dev->threaded && n->thread) - set_bit(NAPI_STATE_THREADED, &n->state); + unsigned long val, new; + + do { + val = READ_ONCE(n->state); + BUG_ON(!test_bit(NAPI_STATE_SCHED, &val)); + + new = val & ~(NAPIF_STATE_SCHED | NAPIF_STATE_NPSVC); + if (n->dev->threaded && n->thread) + new |= NAPIF_STATE_THREADED; + } while (cmpxchg(&n->state, val, new) != val); } EXPORT_SYMBOL(napi_enable); |