diff options
| author | Ingo Molnar <mingo@kernel.org> | 2016-04-23 14:12:10 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-04-23 14:12:10 +0200 |
| commit | 65cbbd037b3d7be0a40bbdb5da9d43b0fccf17ee (patch) | |
| tree | 02b22c99008630010f28f45f502f55915f1014c2 /drivers/usb/class/cdc-acm.c | |
| parent | 9243ae5b28d02dc7d71a4f00c981ef6feaede3f1 (diff) | |
| parent | b303e7c15d53cd8ef6b349b702e07eee3f102792 (diff) | |
| download | talos-op-linux-65cbbd037b3d7be0a40bbdb5da9d43b0fccf17ee.tar.gz talos-op-linux-65cbbd037b3d7be0a40bbdb5da9d43b0fccf17ee.zip | |
Merge branch 'perf/urgent' into perf/core, to resolve conflict
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/usb/class/cdc-acm.c')
| -rw-r--r-- | drivers/usb/class/cdc-acm.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 83fd30b0577c..a6c4a1b895bd 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -744,11 +744,15 @@ static void acm_tty_flush_chars(struct tty_struct *tty) int err; unsigned long flags; + if (!cur) /* nothing to do */ + return; + acm->putbuffer = NULL; err = usb_autopm_get_interface_async(acm->control); spin_lock_irqsave(&acm->write_lock, flags); if (err < 0) { cur->use = 0; + acm->putbuffer = cur; goto out; } |
