Since
commit bcf9dcc1e6269fac674e41f25d007ff75f76e840
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date: Sun Jul 15 09:42:38 2012 +0100
drm/i915: Workaround hang with BSD and forcewake on SandyBridge
and
commit 0cc2764cc4a4bd73df55f8893c871778cf7ddd0f
Author: Ben Widawsky <ben at bwidawsk.net>
Date: Sat Sep 1 22:59:48 2012 -0700
drm/i915: use cpu_relax() in wait_for_atomic
these two macros are essentially the same, so unify them. We keep the
_us version since it's a nice documentation for smaller timeouts.
Cc: Jack Winter <jbh at alchemy.lu>
Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
drivers/gpu/drm/i915/intel_drv.h | 15 ++-------------
1 file changed, 2 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 54bc2ea..c8c1979 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -50,21 +50,10 @@
ret__; \
})
-#define wait_for_atomic_us(COND, US) ({ \
- unsigned long timeout__ = jiffies + usecs_to_jiffies(US); \
- int ret__ = 0; \
- while (!(COND)) { \
- if (time_after(jiffies, timeout__)) { \
- ret__ = -ETIMEDOUT; \
- break; \
- } \
- cpu_relax(); \
- } \
- ret__; \
-})
-
#define wait_for(COND, MS) _wait_for(COND, MS, 1)
#define wait_for_atomic(COND, MS) _wait_for(COND, MS, 0)
+#define wait_for_atomic_us(COND, US) _wait_for((COND), \
+ usecs_to_jiffies((US)), 0)
#define KHz(x) (1000*x)
#define MHz(x) KHz(1000*x)
--
1.7.11.7
