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Steven Rostedt (VMware)
6cc65be4f6
One of my tests compiles the kernel with gcc 4.5.3, and I hit the following build error: include/linux/semaphore.h: In function 'sema_init': include/linux/semaphore.h:35:17: error: unknown field 'val' specified in initializer include/linux/semaphore.h:35:17: warning: missing braces around initializer include/linux/semaphore.h:35:17: warning: (near initialization for '(anonymous).raw_lock.<anonymous>.val') I bisected it down to:625e88be1f("locking/qspinlock: Merge 'struct __qspinlock' into 'struct qspinlock'") ... which makes qspinlock have an anonymous union, which makes initializing it special for older compilers. By adding strategic brackets, it makes the build happy again. Signed-off-by: Steven Rostedt (VMware) <[email protected]> Acked-by: Waiman Long <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Boqun Feng <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Peter Zijlstra (Intel) <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Will Deacon <[email protected]> Cc: [email protected] Fixes:625e88be1f("locking/qspinlock: Merge 'struct __qspinlock' into 'struct qspinlock'") Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]>