compile：错误： ‘SPIN_LOCK_UNLOCKED’未声明(不在函数内)

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when I compile ethercat, compile：错误： ‘SPIN_LOCK_UNLOCKED’未声明(不在函数内)

摘自：http://blog.youkuaiyun.com/lkssbc/article/details/6905773

编译LDD3中的scull出现错误，错误： ‘SPIN_LOCK_UNLOCKED’未声明(不在函数内)

处理办法：

将static spinlock_t scull_u_lock =SPIN_LOCK_UNLOCKED;

改为staticDEFINE_SPINLOCK(scull_u_lock);

再次编译通过。

原因：

SPIN_LOCK_UNLOCKED has beendeprecated since 2.6.19 and will get removed in 2.6.39。SPIN_LOCK_UNLOCKED已被弃用自2.6.19，将在2.6.39中删除。

（擦，我用的是3.0.0的内核，已经被删除了）

备忘，仅供参考。

error: ‘SPIN_LOCK_UNLOCKED’undeclared here (not in a function) 错误的解析

摘自：http://hi.baidu.com/lrbpp/blog/item/0f02781a01bc75c636d122a7.html

Full error:

Quote:

/tmp/.MP2CHYBH8/parallels-kernel-modules/src/hypervisor-api/Linux/hyp_api.c:75:38:error: ‘SPIN_LOCK_UNLOCKED’ undeclared here (not in afunction)
/tmp/.MP2CHYBH8/parallels-kernel-modules/src/hypervisor-api/Linux/hyp_api.c:112:2:error: implicit declaration of function ‘kmalloc’

Trying to run on Kernel Linux3.0.0-1-amd64 (x86_64).

Apparently SPIN_LOCK_UNLOCKED has been deprecated（弃用） since 2007and completely removed since version 2.6.39.
I was able to patch that by adding the removed line back into tospinlock_types.h but I'm not sure about the kmalloc.

So @Parallels team; please update I wanna try/buy this software.<3
And @Everyone else; know of a temporary patch to fix the kmallocissue? :(

If I could patch the sourcedirectly it'd be ok but I'm sort of scared to since I can'tcontinue the installation from the same tmp folder and if I justran the make from there I might miss some finalizing routine Idon't know about. x.x

现在使用voidspin_lock_init(spinlock_t *lock);

函数代替初始化自旋锁spin；