[coreboot-gerrit] Patch set updated for coreboot: 4ff9953 northbridge/amd/{gx2, lx}: Qualify pointer with `volatile`
Edward O'Callaghan (eocallaghan@alterapraxis.com)
gerrit at coreboot.org
Sat Jun 28 12:58:07 CEST 2014
Edward O'Callaghan (eocallaghan at alterapraxis.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/6148
-gerrit
commit 4ff9953d1f35e61d109ed5334fb4d42f0e2dc201
Author: Edward O'Callaghan <eocallaghan at alterapraxis.com>
Date: Sat Jun 28 17:31:58 2014 +1000
northbridge/amd/{gx2,lx}: Qualify pointer with `volatile`
There is no guarantee reading a dereferenced null pointer will not be
optimised away. Qualify the integer storage type with volatile. Clang
enforces this explicitness.
Change-Id: I31524141d70632cade0490c820936a3a8b570346
Signed-off-by: Edward O'Callaghan <eocallaghan at alterapraxis.com>
---
src/northbridge/amd/gx2/northbridgeinit.c | 2 +-
src/northbridge/amd/lx/northbridgeinit.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/src/northbridge/amd/gx2/northbridgeinit.c b/src/northbridge/amd/gx2/northbridgeinit.c
index 47611bf..ef5277c 100644
--- a/src/northbridge/amd/gx2/northbridgeinit.c
+++ b/src/northbridge/amd/gx2/northbridgeinit.c
@@ -660,7 +660,7 @@ void northbridge_init_early(void)
/* Now that the descriptor to memory is set up. */
/* The memory controller needs one read to synch its lines before it can be used. */
- i = *(int *) 0;
+ i = *(volatile int *) 0;
GeodeLinkPriority();
diff --git a/src/northbridge/amd/lx/northbridgeinit.c b/src/northbridge/amd/lx/northbridgeinit.c
index 42b91d6..82b3f48 100644
--- a/src/northbridge/amd/lx/northbridgeinit.c
+++ b/src/northbridge/amd/lx/northbridgeinit.c
@@ -742,7 +742,7 @@ void northbridge_init_early(void)
/* Now that the descriptor to memory is set up. */
/* The memory controller needs one read to synch its lines before it can be used. */
- i = *(int *)0;
+ i = *(volatile int *)0;
GeodeLinkPriority();
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