Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753896AbaJ1M1u (ORCPT ); Tue, 28 Oct 2014 08:27:50 -0400 Received: from mail-wi0-f176.google.com ([209.85.212.176]:44489 "EHLO mail-wi0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751390AbaJ1M1t (ORCPT ); Tue, 28 Oct 2014 08:27:49 -0400 Date: Tue, 28 Oct 2014 14:27:44 +0200 From: Aya Mahfouz To: perex@perex.cz, tiwai@suse.de, bhelgaas@google.com, benoit.taine@lip6.fr Cc: arnd@arndb.de, opw-kernel@googlegroups.com, alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org Subject: [PATCH v2] sound: pci: pcxhr: convert timeval to ktime_t Message-ID: <20141028122744.GA3772@localhost.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch is concerned with migrating the time variables in the pcxhr module found in the sound driver. The changes are concerend with the y2038 problem where timeval will overflow in the year 2038. ktime_t was used instead of timeval to get the wall time. The difference is displayed now in nanoseconds instead of microseconds. Signed-off-by: Aya Mahfouz Reviewed-by: Arnd Bergmann --- v2: changed variables names to avoid redeclaration conflicts. sound/pci/pcxhr/pcxhr.c | 10 ++++++---- sound/pci/pcxhr/pcxhr_core.c | 10 ++++++---- 2 files changed, 12 insertions(+), 8 deletions(-) diff --git a/sound/pci/pcxhr/pcxhr.c b/sound/pci/pcxhr/pcxhr.c index b854fc5..7c33c97 100644 --- a/sound/pci/pcxhr/pcxhr.c +++ b/sound/pci/pcxhr/pcxhr.c @@ -711,8 +711,9 @@ static void pcxhr_start_linked_stream(struct pcxhr_mgr *mgr) int playback_mask = 0; #ifdef CONFIG_SND_DEBUG_VERBOSE - struct timeval my_tv1, my_tv2; - do_gettimeofday(&my_tv1); + ktime_t start_time, stop_time, diff_time; + + start_time = ktime_get(); #endif mutex_lock(&mgr->setup_mutex); @@ -823,9 +824,10 @@ static void pcxhr_start_linked_stream(struct pcxhr_mgr *mgr) mutex_unlock(&mgr->setup_mutex); #ifdef CONFIG_SND_DEBUG_VERBOSE - do_gettimeofday(&my_tv2); + stop_time = ktime_get(); + diff_time = ktime_sub(stop_time, start_time); dev_dbg(&mgr->pci->dev, "***TRIGGER START*** TIME = %ld (err = %x)\n", - (long)(my_tv2.tv_usec - my_tv1.tv_usec), err); + (long)(ktime_to_ns(diff_time)), err); #endif } diff --git a/sound/pci/pcxhr/pcxhr_core.c b/sound/pci/pcxhr/pcxhr_core.c index a584acb..181f772 100644 --- a/sound/pci/pcxhr/pcxhr_core.c +++ b/sound/pci/pcxhr/pcxhr_core.c @@ -910,8 +910,9 @@ int pcxhr_set_pipe_state(struct pcxhr_mgr *mgr, int playback_mask, int audio_mask; #ifdef CONFIG_SND_DEBUG_VERBOSE - struct timeval my_tv1, my_tv2; - do_gettimeofday(&my_tv1); + ktime_t start_time, stop_time, diff_time; + + start_time = ktime_get(); #endif audio_mask = (playback_mask | (capture_mask << PCXHR_PIPE_STATE_CAPTURE_OFFSET)); @@ -960,9 +961,10 @@ int pcxhr_set_pipe_state(struct pcxhr_mgr *mgr, int playback_mask, return err; } #ifdef CONFIG_SND_DEBUG_VERBOSE - do_gettimeofday(&my_tv2); + stop_time = ktime_get(); + diff_time = ktime_sub(stop_time, start_time); dev_dbg(&mgr->pci->dev, "***SET PIPE STATE*** TIME = %ld (err = %x)\n", - (long)(my_tv2.tv_usec - my_tv1.tv_usec), err); + (long)(ktime_to_ns(diff_time)), err); #endif return 0; } -- 1.9.3 -- 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/