On Sat, Jun 20, 2015 at 10:09:37AM +0100, Stefan Wahren wrote: > > > Dave Martin <[email protected]> hat am 18. Juni 2015 um 15:54 geschrieben: > > > > > > pl011_tx_softirq() currently uses spin_{,un}lock(), which are not > > sufficient to inhibit pl011_int() from being triggered by a local > > IRQ and trying to re-take the same lock. This can lead to > > deadlocks. > > > > This patch uses the _irq() locking variants instead to ensure that > > pl011_int() handling for a given port is deferred until any > > pl011_tx_softirq() work for that port is complete. > > > > Fixes: 734745caeb9f serial/amba-pl011: Activate TX IRQ passively > > Signed-off-by: Dave Martin <[email protected]> > > Tested-by: Robin Murphy <[email protected]> > > Cc: stable <[email protected]> # 4.1 > > > > I also get info messages about inconsistent lock state on my mx28 board, > after applying the patch the messages disappeared. > > Tested-by: Stefan Wahren <[email protected]>
Thanks for the confirmation. Cheers ---Dave -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
