[src/trunk]: src/sys/external/bsd/drm2/dist/drm Clarify comment in last commit.

[riastradh <riastradh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/ac371490c3cb
branches:  trunk
changeset: 336391:ac371490c3cb
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Sat Feb 28 03:05:09 2015 +0000

description:
Clarify comment in last commit.

diffstat:

 sys/external/bsd/drm2/dist/drm/drm_irq.c |  2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diffs (12 lines):

diff -r 6bca0d8d1215 -r ac371490c3cb sys/external/bsd/drm2/dist/drm/drm_irq.c
--- a/sys/external/bsd/drm2/dist/drm/drm_irq.c  Sat Feb 28 03:03:30 2015 +0000
+++ b/sys/external/bsd/drm2/dist/drm/drm_irq.c  Sat Feb 28 03:05:09 2015 +0000
@@ -1301,7 +1301,7 @@
                    vblwait->request.sequence) <= (1 << 23)) ||
                !dev->irq_enabled));
        spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
-       if (ret < 0)            /* Failed: do nothing.  */
+       if (ret < 0)            /* Failed: return negative error as is.  */
                ;
        else if (ret == 0)      /* Timed out: return -EBUSY like Linux.  */
                ret = -EBUSY;