diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2012-05-09 21:45:43 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-06-01 15:18:24 +0800 |
| commit | b019d4bf936fa7212341053f337c6714f29fc95e (patch) | |
| tree | 2d2eff17ade31ffea18a468d1aad361b2f81b4ea /fs/cifs/inode.c | |
| parent | 46f736c6f722e9a71ab552178a6bf4edf85ba371 (diff) | |
drm/i915: Avoid a double-read of PCH_IIR during interrupt handling
commit 9adab8b5a7fde248504f484e197589f3e3c922e2 upstream.
Currently the code re-reads PCH_IIR during the hotplug interrupt
processing. Not only is this a wasted read, but introduces a potential
for handling a spurious interrupt as we then may not clear all the
interrupts processed (since the re-read IIR may contains more interrupts
asserted than we clear using the result of the original read).
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/cifs/inode.c')
0 files changed, 0 insertions, 0 deletions