diff options
| author | Nicholas Piggin <npiggin@gmail.com> | 2018-04-30 17:55:50 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-07-24 15:09:57 +0300 |
| commit | ac4ac788fdadc6b703ff3322de07dee442e08e1c (patch) | |
| tree | ea1fbf4f4ec19a771adf1c7ce42272cd12aea3ab /drivers/tty | |
| parent | b74d2807ae0cdb17ccc45d22260fc151a1b2d46b (diff) | |
| download | linux-ac4ac788fdadc6b703ff3322de07dee442e08e1c.tar.xz | |
powerpc/powernv: move opal console flushing to udbg
OPAL console writes do not have to synchronously flush firmware /
hardware buffers unless they are going through the udbg path.
Remove the unconditional flushing from opal_put_chars. Flush if
there was no space in the buffer as an optimisation (callers loop
waiting for success in that case). udbg flushing is moved to
udbg_opal_putc.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/hvc/hvc_opal.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/tty/hvc/hvc_opal.c b/drivers/tty/hvc/hvc_opal.c index 9645c0062a90..958c61c8f35a 100644 --- a/drivers/tty/hvc/hvc_opal.c +++ b/drivers/tty/hvc/hvc_opal.c @@ -275,6 +275,11 @@ static void udbg_opal_putc(char c) count = hvc_opal_hvsi_put_chars(termno, &c, 1); break; } + + /* This is needed for the cosole to flush + * when there aren't any interrupts. + */ + opal_flush_console(termno); } while(count == 0 || count == -EAGAIN); } |