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| author |   Sathya Perla <sathya.perla@emulex.com> | 2012-11-23 00:27:18 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2012-11-23 14:26:08 -0500 |
| commit | 0b545a62915aa635a5d41f64cbf3b7650c132a8d (patch) | |
| tree | 77a24000819fa306dc448419642dbd52eda0301a /include/linux/micrel_phy.h | |
| parent | tun: change tun_get_iff() prototype. (diff) | |
| download | linux-dev-0b545a62915aa635a5d41f64cbf3b7650c132a8d.tar.xz linux-dev-0b545a62915aa635a5d41f64cbf3b7650c132a8d.zip | |
be2net: fix a possible events_get() race on BE2
On BE2 chip, an interrupt being raised even when EQ is in un-armed state has
been observed a few times. This is not expected and has never been
observed on BE3/Lancer chips.
As a consequence, be_msix()::events_get() and be_poll()::events_get()
can race and notify an EQ wrongly causing a CEV UE. The other possible
side-effect would be traffic stalling because after notifying EQ,
napi_schedule() is ignored as NAPI is already running.
This patch fixes this issue by counting events only in be_poll().
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/micrel_phy.h')
0 files changed, 0 insertions, 0 deletions