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authorMarc Kleine-Budde <mkl@pengutronix.de>2017-06-06 13:53:16 +0200
committerMarc Kleine-Budde <mkl@pengutronix.de>2017-06-09 11:39:23 +0200
commit74b7b490886852582d986a33443c2ffa50970169 (patch)
tree08b4d9f3fb97dbfb6c2b89f5650c1a5f4611c0b7 /net/can
parent5cda3ee5138e91ac369ed9d0b55eab0dab077686 (diff)
downloadlinux-stericsson-74b7b490886852582d986a33443c2ffa50970169.tar.gz
can: af_can: namespace support: fix lockdep splat: properly initialize spin_lock
This patch uses spin_lock_init() instead of __SPIN_LOCK_UNLOCKED() to initialize the per namespace net->can.can_rcvlists_lock lock to fix this lockdep warning: | INFO: trying to register non-static key. | the code is fine but needs lockdep annotation. | turning off the locking correctness validator. | CPU: 0 PID: 186 Comm: candump Not tainted 4.12.0-rc3+ #47 | Hardware name: Marvell Kirkwood (Flattened Device Tree) | [<c0016644>] (unwind_backtrace) from [<c00139a8>] (show_stack+0x18/0x1c) | [<c00139a8>] (show_stack) from [<c0058c8c>] (register_lock_class+0x1e4/0x55c) | [<c0058c8c>] (register_lock_class) from [<c005bdfc>] (__lock_acquire+0x148/0x1990) | [<c005bdfc>] (__lock_acquire) from [<c005deec>] (lock_acquire+0x174/0x210) | [<c005deec>] (lock_acquire) from [<c04a6780>] (_raw_spin_lock+0x50/0x88) | [<c04a6780>] (_raw_spin_lock) from [<bf02116c>] (can_rx_register+0x94/0x15c [can]) | [<bf02116c>] (can_rx_register [can]) from [<bf02a868>] (raw_enable_filters+0x60/0xc0 [can_raw]) | [<bf02a868>] (raw_enable_filters [can_raw]) from [<bf02ac14>] (raw_enable_allfilters+0x2c/0xa0 [can_raw]) | [<bf02ac14>] (raw_enable_allfilters [can_raw]) from [<bf02ad38>] (raw_bind+0xb0/0x250 [can_raw]) | [<bf02ad38>] (raw_bind [can_raw]) from [<c03b5fb8>] (SyS_bind+0x70/0xac) | [<c03b5fb8>] (SyS_bind) from [<c000f8c0>] (ret_fast_syscall+0x0/0x1c) Cc: Mario Kicherer <dev@kicherer.org> Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'net/can')
-rw-r--r--net/can/af_can.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/net/can/af_can.c b/net/can/af_can.c
index b6406fe33c76..88edac0f3e36 100644
--- a/net/can/af_can.c
+++ b/net/can/af_can.c
@@ -872,8 +872,7 @@ static int can_notifier(struct notifier_block *nb, unsigned long msg,
static int can_pernet_init(struct net *net)
{
- net->can.can_rcvlists_lock =
- __SPIN_LOCK_UNLOCKED(net->can.can_rcvlists_lock);
+ spin_lock_init(&net->can.can_rcvlists_lock);
net->can.can_rx_alldev_list =
kzalloc(sizeof(struct dev_rcv_lists), GFP_KERNEL);