On Thu, Dec 26, 2013 at 03:58:20PM +0800, Dong Aisheng wrote: > > It's strange that this issue did not happen on kernel 3.10.17 with the same > > code. And looking at the code, before call spin_lock we already disable the > > mmc > > controller irq, per on my understanding, the deadlock given by lockdep may > > not > > be able to happen(pls fix me if wrong). > > May the lockdep not track the specific irq disable? > > Copy lockdep guy to comment.
No, lockdep also doesn't know only that one line can take this lock. Lockdep only knows a lock is taken from IRQ context, and disabling one line still allows IRQs to happen and therefore it yells. -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
