net: systemport: suppress warnings on failed Rx SKB allocations
authorDoug Berger <opendmb@gmail.com>
Thu, 23 Apr 2020 23:13:30 +0000 (16:13 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 10 May 2020 08:31:29 +0000 (10:31 +0200)
commitd8e0b58fa471c0cc8850ffef2e8b492378155bfc
treed91e8939d66888fc1a17d930e2762f83b92e5a6e
parent5c065ee4a07dad5531c9a475ae4c44bc274eb6de
net: systemport: suppress warnings on failed Rx SKB allocations

[ Upstream commit 3554e54a46125030c534820c297ed7f6c3907e24 ]

The driver is designed to drop Rx packets and reclaim the buffers
when an allocation fails, and the network interface needs to safely
handle this packet loss. Therefore, an allocation failure of Rx
SKBs is relatively benign.

However, the output of the warning message occurs with a high
scheduling priority that can cause excessive jitter/latency for
other high priority processing.

This commit suppresses the warning messages to prevent scheduling
problems while retaining the failure count in the statistics of
the network interface.

Signed-off-by: Doug Berger <opendmb@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/net/ethernet/broadcom/bcmsysport.c