Messages in this thread | | | Date | Sat, 23 Jul 2011 09:29:08 +0200 (CEST) | From | Thomas Gleixner <> | Subject | Re: [PATCH] rtc-tegra: properly initialize spinlock |
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On Fri, 22 Jul 2011, Sven-Thorsten Dietrich wrote: > > On Jul 22, 2011, at 3:13 PM, Andrew Morton wrote: > > > On Fri, 22 Jul 2011 10:35:56 +0200 > > Uwe Kleine-K__nig <u.kleine-koenig@pengutronix.de> wrote: > > > >> Using __SPIN_LOCK_UNLOCKED for a dynamically allocated lock is wrong and > >> breaks with PREEMPT_RT_FULL. > > > > Please define "breaks". Lockdep warnings? Deadlocks? > > Narrr, I think its a compile-time problem with the static initializer.
Correct. The macro expansion magic of the static initializer barfs and with lockdep the lockdep key assignment is missing.
Thanks,
tglx
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