Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758948AbXHSBe5 (ORCPT ); Sat, 18 Aug 2007 21:34:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755920AbXHSBes (ORCPT ); Sat, 18 Aug 2007 21:34:48 -0400 Received: from nf-out-0910.google.com ([64.233.182.185]:26126 "EHLO nf-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755773AbXHSBer (ORCPT ); Sat, 18 Aug 2007 21:34:47 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=beta; h=received:message-id:date:from:to:subject:mime-version:content-type:content-transfer-encoding:content-disposition; b=WuoUIr573PRhpG5ZmCMGktwUKWBS15ocCgmm/k9nrvSfrsEXxsORNMDHpmOY193iDEnYTsuiehiJNwN9tSgjCOoFcALB7Ji/qnoK1+QYrXiryw6lndRcaJq7Cu5c2DDhV7t0iAGOjTkle7SdPitM+3GCd5NujMK2zafld7AEy2w= Message-ID: Date: Sun, 19 Aug 2007 03:34:45 +0200 From: "Xu Yang" To: linux-kernel@vger.kernel.org Subject: TIMER0 interrupt's problem in kernel 2.6.21 ( realview-smp_defconfig) MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1075 Lines: 32 I am running kernel 2.6.21 on my realview_eb_mpcore system. at the beginning I found the program is stuck at calibrating loop................, this is because that the timer0 didn't give out any interrupt. after enable the timer0's interrupt, I found that even when there is no timer interrupt the interrupt routine (realview_timer_interrupt() )is still reached. I added a timer interrupt disable instruction in the routine realview_timer_interrupt() , which makes sure that after the first interrupt the interrupt would be disabled. even in this situation , I can still see that the interrupt routine is accessed by the cpu. I guess this maybe caused by the problem of the gic_ack() or some other functions? does anyone ever meet such a situation? anyone knows how to handle this? any idea is appreciated. regards, Yang - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/