| Message ID | 20201029185011.4749-1-m.szyprowski@samsung.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | net: stmmac: Fix channel lock initialization | expand |
On Thu, 29 Oct 2020 19:50:11 +0100 Marek Szyprowski wrote: > Commit 0366f7e06a6b ("net: stmmac: add ethtool support for get/set > channels") refactored channel initialization, but during that operation, > the spinlock initialization got lost. Fix this. This fixes the following > lockdep warning: > Fixes: 0366f7e06a6b ("net: stmmac: add ethtool support for get/set channels") > Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Applied to net, thanks!
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 220626a8d499..d833908b660a 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -4757,6 +4757,7 @@ static void stmmac_napi_add(struct net_device *dev) ch->priv_data = priv; ch->index = queue; + spin_lock_init(&ch->lock); if (queue < priv->plat->rx_queues_to_use) { netif_napi_add(dev, &ch->rx_napi, stmmac_napi_poll_rx,
Commit 0366f7e06a6b ("net: stmmac: add ethtool support for get/set channels") refactored channel initialization, but during that operation, the spinlock initialization got lost. Fix this. This fixes the following lockdep warning: meson8b-dwmac ff3f0000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. CPU: 1 PID: 331 Comm: kworker/1:2H Not tainted 5.9.0-rc3+ #1858 Hardware name: Hardkernel ODROID-N2 (DT) Workqueue: kblockd blk_mq_run_work_fn Call trace: dump_backtrace+0x0/0x1d0 show_stack+0x14/0x20 dump_stack+0xe8/0x154 register_lock_class+0x58c/0x590 __lock_acquire+0x7c/0x1790 lock_acquire+0xf4/0x440 _raw_spin_lock_irqsave+0x80/0xb0 stmmac_tx_timer+0x4c/0xb0 [stmmac] call_timer_fn+0xc4/0x3e8 run_timer_softirq+0x2b8/0x6c0 efi_header_end+0x114/0x5f8 irq_exit+0x104/0x110 __handle_domain_irq+0x60/0xb8 gic_handle_irq+0x58/0xb0 el1_irq+0xbc/0x180 _raw_spin_unlock_irqrestore+0x48/0x90 mmc_blk_rw_wait+0x70/0x160 mmc_blk_mq_issue_rq+0x510/0x830 mmc_mq_queue_rq+0x13c/0x278 blk_mq_dispatch_rq_list+0x2a0/0x698 __blk_mq_do_dispatch_sched+0x254/0x288 __blk_mq_sched_dispatch_requests+0x190/0x1d8 blk_mq_sched_dispatch_requests+0x34/0x70 __blk_mq_run_hw_queue+0xcc/0x148 blk_mq_run_work_fn+0x20/0x28 process_one_work+0x2a8/0x718 worker_thread+0x48/0x460 kthread+0x134/0x160 ret_from_fork+0x10/0x1c Fixes: 0366f7e06a6b ("net: stmmac: add ethtool support for get/set channels") Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> --- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 1 + 1 file changed, 1 insertion(+)