| commit | 9fef3d2d15ae8ca24e4a145f2e189eea145d18c2 | |
| author | Milton Miller <miltonm@bga.com> | |
| Thu, 8 Jan 2009 02:14:18 +0000 (8 02:14 +0000) | ||
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | |
| Tue, 13 Jan 2009 03:48:01 +0000 (13 14:48 +1100) | ||
| tree | deb3764686dcbeb5ab013ecf6183d55c514f216f | treesnapshot (tar.gz zip) |
| parent | a1c5a8932bbb75b550deb156d890027827fc9d6e | commitdiff |
hvc_console: Change an mb() to smp_mb() and add some comments
I remember some history on this barrier. There was a race between
open via /dev/console and the tty being fully setup. Its also why
there is a temporary variable and the global is assigned at the end
of the function.
Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
I remember some history on this barrier. There was a race between
open via /dev/console and the tty being fully setup. Its also why
there is a temporary variable and the global is assigned at the end
of the function.
Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| drivers/char/hvc_console.c | diffblobblamehistory |