kernel/drivers/net/ethernet/cisco/enic/enic_api.c, branch linux-4.3.yHosts the 0x221E linux distro kernel.https://universe.0xinfinity.dev/distro/kernel/atom?h=linux-4.3.y2014-06-23T21:32:19Zenic: fix lockdep around devcmd_lock2014-06-23T21:32:19ZTony Camusotcamuso@redhat.com2014-06-23T10:38:03Zurn:sha1:8e091340cfcd6f96ca0dddb078ce28c407a6d44c
We were experiencing occasional "BUG: scheduling while atomic" splats
in our testing. Enabling DEBUG_SPINLOCK and DEBUG_LOCKDEP in the kernel
exposed a lockdep in the enic driver.
enic 0000:0b:00.0 eth2: Link UP
======================================================
[ INFO: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected ]
3.12.0-rc1.x86_64-dbg+ #2 Tainted: GF W
------------------------------------------------------
NetworkManager/4209 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire:
(&(&enic->devcmd_lock)->rlock){+.+...}, at: [<ffffffffa026b7e4>] enic_dev_packet_filter+0x44/0x90 [enic]
The fix was to replace spin_lock with spin_lock_bh for the enic
devcmd_lock, so that soft irqs would be disabled while the lock
is held.
Signed-off-by: Sujith Sankar <ssujith@cisco.com>
Signed-off-by: Tony Camuso <tcamuso@redhat.com>
Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net: enic: Add an interface for USNIC to interact with firmware2013-08-20T20:41:01ZNeel Patelneepatel@cisco.com2013-08-16T22:47:40Zurn:sha1:0b038566c0ea9f8daceae879bb7ad748ab8c95f0
This patch adds an interface for USNIC to proxy firmware commands
through ENIC.
Signed-off-by: Neel Patel <neepatel@cisco.com>
Signed-off-by: Nishank Trivedi <nistrive@cisco.com>
Signed-off-by: Christian Benvenuti <benve@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>