diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/platforms/powernv/opal-kmsg.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/arch/powerpc/platforms/powernv/opal-kmsg.c b/arch/powerpc/platforms/powernv/opal-kmsg.c index f8f41ccce75f..fd2bbf4fd6dc 100644 --- a/arch/powerpc/platforms/powernv/opal-kmsg.c +++ b/arch/powerpc/platforms/powernv/opal-kmsg.c @@ -51,20 +51,17 @@ static void force_opal_console_flush(struct kmsg_dumper *dumper, } while (rc == OPAL_PARTIAL); /* More to flush */ } else { - int i; + __be64 evt; + WARN_ONCE(1, "opal: OPAL_CONSOLE_FLUSH missing.\n"); /* * If OPAL_CONSOLE_FLUSH is not implemented in the firmware, * the console can still be flushed by calling the polling - * function enough times to flush the buffer. We don't know - * how much output still needs to be flushed, but we can be - * generous since the kernel is in panic and doesn't need - * to do much else. + * function while it has OPAL_EVENT_CONSOLE_OUTPUT events. */ - printk(KERN_NOTICE "opal: OPAL_CONSOLE_FLUSH missing.\n"); - for (i = 0; i < 1024; i++) { - opal_poll_events(NULL); - } + do { + opal_poll_events(&evt); + } while (be64_to_cpu(evt) & OPAL_EVENT_CONSOLE_OUTPUT); } } |