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| author | Dave Airlie <airlied@redhat.com> | 2018-03-28 14:30:41 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2018-03-28 14:30:41 +1000 |
| commit | 2b4f44eec2be2688511c2b617d0e1b4f94c45ba4 (patch) | |
| tree | 533c03602f4ae6d6404db6fa56c88e6f83e1bebe /drivers/tty/tty_io.c | |
| parent | 33d009cd889490838c5db9b9339856c9e3d3facc (diff) | |
| parent | 3eb2ce825ea1ad89d20f7a3b5780df850e4be274 (diff) | |
| download | talos-op-linux-2b4f44eec2be2688511c2b617d0e1b4f94c45ba4.tar.gz talos-op-linux-2b4f44eec2be2688511c2b617d0e1b4f94c45ba4.zip | |
Backmerge tag 'v4.16-rc7' into drm-next
Linux 4.16-rc7
This was requested by Daniel, and things were getting
a bit hard to reconcile, most of the conflicts were
trivial though.
Diffstat (limited to 'drivers/tty/tty_io.c')
| -rw-r--r-- | drivers/tty/tty_io.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c index eb9133b472f4..63114ea35ec1 100644 --- a/drivers/tty/tty_io.c +++ b/drivers/tty/tty_io.c @@ -586,6 +586,14 @@ static void __tty_hangup(struct tty_struct *tty, int exit_session) return; } + /* + * Some console devices aren't actually hung up for technical and + * historical reasons, which can lead to indefinite interruptible + * sleep in n_tty_read(). The following explicitly tells + * n_tty_read() to abort readers. + */ + set_bit(TTY_HUPPING, &tty->flags); + /* inuse_filps is protected by the single tty lock, this really needs to change if we want to flush the workqueue with the lock held */ @@ -640,6 +648,7 @@ static void __tty_hangup(struct tty_struct *tty, int exit_session) * from the ldisc side, which is now guaranteed. */ set_bit(TTY_HUPPED, &tty->flags); + clear_bit(TTY_HUPPING, &tty->flags); tty_unlock(tty); if (f) |
