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authorDaniel Vetter <daniel.vetter@ffwll.ch>2013-03-28 14:31:04 +0400
committerDaniel Vetter <daniel.vetter@ffwll.ch>2013-03-28 19:39:11 +0400
commit6effa33b73fb0129061ecd8ba3158d984475d35d (patch)
treecf47b6c0e99ee618a9f3e79de5f956156bd3eebb /drivers/gpu/drm/i915/intel_drv.h
parent0ff9800ade77160df35764f3fe15cd893605762b (diff)
downloadlinux-6effa33b73fb0129061ecd8ba3158d984475d35d.tar.xz
drm/i915: fold wait_for_atomic_us into wait_for_atomic
Since commit bcf9dcc1e6269fac674e41f25d007ff75f76e840 Author: Chris Wilson <chris@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@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. v2: Fixup time unit conversion, _wait_for takes ms (Ville). Cc: Jack Winter <jbh@alchemy.lu> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_drv.h')
-rw-r--r--drivers/gpu/drm/i915/intel_drv.h15
1 files changed, 2 insertions, 13 deletions
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 5c7b04b41702..8720a67395f8 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), \
+ DIV_ROUND_UP((US), 1000), 0)
#define KHz(x) (1000*x)
#define MHz(x) KHz(1000*x)