> 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]> Regards Stefan -- To unsubscribe from this list: send the line "unsubscribe stable" in
