[RFC PATCH v2 7/9] drm: avoid using on_each_cpu hard coded ret value

[Gilad Ben-Yossef]

on_each_cpu always returns a hard coded return code of zero.

Removing all tests based on this return value saves run time
cycles for compares and code bloat for branches.

Signed-off-by: Gilad Ben-Yossef <gilad at benyossef.com>
Acked-by: Peter Zijlstra <a.p.zijlstra at chello.nl>
Reviewed-by: Michal Nazarewicz <mina86 at mina86.com>
CC: David Airlie <airlied at linux.ie>
CC: dri-devel at lists.freedesktop.org
---
 drivers/gpu/drm/drm_cache.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/drm_cache.c b/drivers/gpu/drm/drm_cache.c
index 5928653..668653c 100644
--- a/drivers/gpu/drm/drm_cache.c
+++ b/drivers/gpu/drm/drm_cache.c
@@ -75,8 +75,7 @@ drm_clflush_pages(struct page *pages[], unsigned long num_pages)
 		return;
 	}
 
-	if (on_each_cpu(drm_clflush_ipi_handler, NULL, 1) != 0)
-		printk(KERN_ERR "Timed out waiting for cache flush.\n");
+	on_each_cpu(drm_clflush_ipi_handler, NULL, 1);
 
 #elif defined(__powerpc__)
 	unsigned long i;
-- 
1.7.0.4