mirror of https://gitee.com/openkylin/linux.git
60158e6464
The driver calls cxgb_vlan_mode() from init_one(). This calls into
synchronize_rx(), which locks all the q locks, but the q locks are not
initialized until cxgb_up() -> setup_sge_qsets(). So move the call to
cxgb_vlan_mode() into cxgb_up(), after the call to setup_sge_qsets().
We also move the body of these functions up higher to avoid having to
a forward declaration.
This was found because of the lockdep warning:
INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
Pid: 323, comm: work_for_cpu Not tainted 3.4.0-rc5 #28
Call Trace:
[<ffffffff8106e767>] register_lock_class+0x108/0x2d0
[<ffffffff8106ff42>] __lock_acquire+0xd3/0xd06
[<ffffffff81070fd0>] lock_acquire+0xbf/0xfe
[<ffffffff813862a6>] _raw_spin_lock_irq+0x36/0x45
[<ffffffffa01e71aa>] cxgb_vlan_mode+0x96/0xcb [cxgb3]
[<ffffffffa01f90eb>] init_one+0x8c4/0x980 [cxgb3]
[<ffffffff811fcbf0>] local_pci_probe+0x3f/0x70
[<ffffffff81042206>] do_work_for_cpu+0x10/0x22
[<ffffffff810482de>] kthread+0xa1/0xa9
[<ffffffff8138e234>] kernel_thread_helper+0x4/0x10
Contrary to what lockdep says, the code is not fine: we are locking an
uninitialized spinlock.
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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|---|---|---|
| .. | ||
| Makefile | ||
| adapter.h | ||
| ael1002.c | ||
| aq100x.c | ||
| common.h | ||
| cxgb3_ctl_defs.h | ||
| cxgb3_defs.h | ||
| cxgb3_ioctl.h | ||
| cxgb3_main.c | ||
| cxgb3_offload.c | ||
| cxgb3_offload.h | ||
| firmware_exports.h | ||
| l2t.c | ||
| l2t.h | ||
| mc5.c | ||
| regs.h | ||
| sge.c | ||
| sge_defs.h | ||
| t3_cpl.h | ||
| t3_hw.c | ||
| t3cdev.h | ||
| version.h | ||
| vsc8211.c | ||
| xgmac.c | ||