Revert "exec: fix a glitch in checking dma r/w access"

This reverts commit 2600664a4e8d333290f01f0a957ea996e300bc6f.
The patch should not have been committed, see:
http://marc.info/?l=qemu-devel&m=145373225020873.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>

diff --git a/exec.c b/exec.c
index e64f69b59183471115c3cea48ed859f8de12a270..f3797b77921367cef8fd8ef2d22bf748cfd7383d 100644 (file)
--- a/exec.c
+++ b/exec.c
@@ -1903,7 +1903,7 @@ static void invalidate_and_set_dirty(hwaddr addr,
 static inline bool memory_access_is_direct(MemoryRegion *mr, bool is_write)
 {
     if (memory_region_is_ram(mr)) {
-        return (is_write && !mr->readonly);
+        return !(is_write && mr->readonly);
     }
     if (memory_region_is_romd(mr)) {
         return !is_write;