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| author | Sriram <srk@ti.com> | 2009-11-12 01:55:42 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-11-15 22:17:43 -0800 |
| commit | 5bfa2a17f2b79eb6a63c5d47ce89d5798bba086a (patch) | |
| tree | 8688f103ebcd051adbff13cde2feac2356d45b9f /drivers/net | |
| parent | f88c5b9887a95ce424db629ee79b57f6ef5bfddd (diff) | |
| download | linux-5bfa2a17f2b79eb6a63c5d47ce89d5798bba086a.tar.gz linux-5bfa2a17f2b79eb6a63c5d47ce89d5798bba086a.tar.bz2 linux-5bfa2a17f2b79eb6a63c5d47ce89d5798bba086a.zip | |
TI Davinci EMAC : Fix Console Hang when bringing the interface down
In the NAPI poll function(emac_poll), check for netif_running()
is unnecassary. In addition to associated runtime overhead, it
also results in a continuous softirq loop when the interface is
brought down under heavy traffic(tested wit Traffic Generator).
Once the interface is disabled, the poll function always returns
zero(with the check for netif_running) and napi_complete() would
never get called resulting in softirq loop.
Signed-off-by: Sriramakrishnan <srk@ti.com>
Acked-by: Chaithrika U S <chaithrika@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/davinci_emac.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/drivers/net/davinci_emac.c b/drivers/net/davinci_emac.c index 3179521aee90..db6380379478 100644 --- a/drivers/net/davinci_emac.c +++ b/drivers/net/davinci_emac.c @@ -2140,9 +2140,6 @@ static int emac_poll(struct napi_struct *napi, int budget) u32 status = 0; u32 num_pkts = 0; - if (!netif_running(ndev)) - return 0; - /* Check interrupt vectors and call packet processing */ status = emac_read(EMAC_MACINVECTOR); |