From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from VA3EHSOBE005.bigfish.com (va3ehsobe005.messaging.microsoft.com [216.32.180.31]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (Client CN "mail.global.frontbridge.com", Issuer "Microsoft Secure Server Authority" (verified OK)) by ozlabs.org (Postfix) with ESMTPS id 18A8DB6F62 for ; Wed, 17 Aug 2011 16:56:00 +1000 (EST) From: To: Subject: [PATCH] powerpc/mm: fix the call trace when resumed from hibernation Date: Wed, 17 Aug 2011 13:51:33 +0800 Message-ID: <1313560293-31874-1-git-send-email-b29983@freescale.com> MIME-Version: 1.0 Content-Type: text/plain Cc: Tang Yuantian , linuxppc-dev@lists.ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Tang Yuantian In SMP mode, the kernel would produce call trace when resumed from hibernation. The reason is when the function destroy_context is called to drop the resuming mm context, the mm->context.active is 1 which is wrong and should be zero. We pass the current->active_mm as previous mm context to function switch_mmu_context to decrease the context.active by 1. In UP mode, there is no effect. Signed-off-by: Tang Yuantian --- arch/powerpc/kernel/swsusp.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/powerpc/kernel/swsusp.c b/arch/powerpc/kernel/swsusp.c index 560c961..7cc81f0 100644 --- a/arch/powerpc/kernel/swsusp.c +++ b/arch/powerpc/kernel/swsusp.c @@ -34,6 +34,6 @@ void save_processor_state(void) void restore_processor_state(void) { #ifdef CONFIG_PPC32 - switch_mmu_context(NULL, current->active_mm); + switch_mmu_context(current->active_mm, current->active_mm); #endif } -- 1.6.4