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| author | Eric W. Biederman <ebiederm@xmission.com> | 2014-03-14 18:10:14 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-03-14 22:52:48 -0400 |
| commit | 176f792f571ffef6d86b4254424cc05bb3874c9e (patch) | |
| tree | bd3e5e3706745ae6d6521fbbd0d3d434ad36e0c7 /drivers/net/ethernet/toshiba | |
| parent | d1def91cd7fcc82ac0bea9a46b5e31a7a005ecb6 (diff) | |
| download | linux-176f792f571ffef6d86b4254424cc05bb3874c9e.tar.gz linux-176f792f571ffef6d86b4254424cc05bb3874c9e.tar.bz2 linux-176f792f571ffef6d86b4254424cc05bb3874c9e.zip | |
tc35815: Don't receive packets when the napi budget == 0
Processing any incoming packets with a with a napi budget of 0
is incorrect driver behavior.
This matters as netpoll will shortly call drivers with a budget of 0
to avoid receive packet processing happening in hard irq context.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/toshiba')
| -rw-r--r-- | drivers/net/ethernet/toshiba/tc35815.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/toshiba/tc35815.c b/drivers/net/ethernet/toshiba/tc35815.c index 88e9c73cebc0..fef5573dbfca 100644 --- a/drivers/net/ethernet/toshiba/tc35815.c +++ b/drivers/net/ethernet/toshiba/tc35815.c @@ -1645,6 +1645,9 @@ static int tc35815_poll(struct napi_struct *napi, int budget) int received = 0, handled; u32 status; + if (budget <= 0) + return received; + spin_lock(&lp->rx_lock); status = tc_readl(&tr->Int_Src); do { |