From: 杜坤明 <dkm@rockchip.com>
Date: Fri, 25 Mar 2011 04:46:45 +0000 (+0800)
Subject: gpu: add dsb() before gpu start
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=18de57592b8cf70f09cb464f624a048960cfb53b;p=firefly-linux-kernel-4.4.55.git

gpu: add dsb() before gpu start
---

diff --git a/drivers/staging/rk29/vivante/hal/os/linux/kernel/gc_hal_kernel_os.c b/drivers/staging/rk29/vivante/hal/os/linux/kernel/gc_hal_kernel_os.c
index ae9002ad5c4e..10faa6fa3a0c 100755
--- a/drivers/staging/rk29/vivante/hal/os/linux/kernel/gc_hal_kernel_os.c
+++ b/drivers/staging/rk29/vivante/hal/os/linux/kernel/gc_hal_kernel_os.c
@@ -2602,7 +2602,8 @@ gceSTATUS gckOS_MemoryBarrier(
     /* Verify thearguments. */
     gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
 
-    mb();
+    //mb();
+    dsb();
 
     /* Success. */
     return gcvSTATUS_OK;
@@ -5418,6 +5419,8 @@ gckOS_CacheFlush(
 {
 #if (1==gcdENABLE_MEM_CACHE)
     dmac_clean_range(Logical, Logical+Bytes);
+#elif (2==gcdENABLE_MEM_CACHE)
+    dsb();
 #endif
     return gcvSTATUS_OK;
 }
@@ -5454,6 +5457,8 @@ gckOS_CacheInvalidate(
 {
 #if (1==gcdENABLE_MEM_CACHE)
     dmac_flush_range(Logical, Logical+Bytes);
+#elif (2==gcdENABLE_MEM_CACHE)
+    dsb();
 #endif
     return gcvSTATUS_OK;
 }