From: srinidhi.kasagar@stericsson.com (srinidhi kasagar)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 4/4] ARM: apply the l2x0 Errata 769419 at run time
Date: Mon, 21 Jan 2013 18:47:12 +0530 [thread overview]
Message-ID: <20130121131709.GA29927@bnru10> (raw)
Signed-off-by: srinidhi kasagar <srinidhi.kasagar@stericsson.com>
---
arch/arm/kernel/process.c | 9 ++++++---
1 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index c6dec5f..c94d84f 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -39,6 +39,7 @@
#include <asm/thread_notify.h>
#include <asm/stacktrace.h>
#include <asm/mach/time.h>
+#include <asm/hardware/cache-l2x0.h>
#ifdef CONFIG_CC_STACKPROTECTOR
#include <linux/stackprotector.h>
@@ -201,9 +202,11 @@ void cpu_idle(void)
* to ensure we don't miss a wakeup call.
*/
local_irq_disable();
-#ifdef CONFIG_PL310_ERRATA_769419
- wmb();
-#endif
+
+ /* Check for PL310 ERRATA 769419 */
+ if (l2x0_get_rtl_release() == L2X0_CACHE_ID_RTL_R3P0)
+ wmb();
+
if (hlt_counter) {
local_irq_enable();
cpu_relax();
--
1.7.2.dirty
next reply other threads:[~2013-01-21 13:17 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-21 13:17 srinidhi kasagar [this message]
2013-01-21 16:12 ` [PATCH 4/4] ARM: apply the l2x0 Errata 769419 at run time Russell King - ARM Linux
2013-01-22 5:59 ` Srinidhi Kasagar
2013-01-22 9:43 ` Russell King - ARM Linux
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