From b849a60e0903b1c5430c3859864554662e127a8d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Mon, 16 Jan 2012 10:34:31 +0100 Subject: ARM: make cr_alignment read-only #ifndef CONFIG_CPU_CP15 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This makes cr_alignment a constant 0 to break code that tries to modify the value as it's likely that it's built on wrong assumption when CONFIG_CPU_CP15 isn't defined. For code that is only reading the value 0 is more or less a fine value to report. Signed-off-by: Uwe Kleine-König Message-Id: 1358413196-5609-2-git-send-email-u.kleine-koenig@pengutronix.de (v8) --- arch/arm/mm/alignment.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/arm/mm/alignment.c') diff --git a/arch/arm/mm/alignment.c b/arch/arm/mm/alignment.c index b820eda..feeb3ea 100644 --- a/arch/arm/mm/alignment.c +++ b/arch/arm/mm/alignment.c @@ -964,12 +964,14 @@ static int __init alignment_init(void) return -ENOMEM; #endif +#ifdef CONFIG_CPU_CP15 if (cpu_is_v6_unaligned()) { cr_alignment &= ~CR_A; cr_no_alignment &= ~CR_A; set_cr(cr_alignment); ai_usermode = safe_usermode(ai_usermode, false); } +#endif hook_fault_code(FAULT_CODE_ALIGNMENT, do_alignment, SIGBUS, BUS_ADRALN, "alignment exception"); -- cgit v1.1