From patchwork Sun Oct 18 09:45:19 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: WEN Pingbo X-Patchwork-Id: 7429711 Return-Path: X-Original-To: patchwork-linux-input@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id F2563BEEA4 for ; Sun, 18 Oct 2015 09:47:16 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id BA7DA206F7 for ; Sun, 18 Oct 2015 09:47:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AF386206F6 for ; Sun, 18 Oct 2015 09:47:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752916AbbJRJrN (ORCPT ); Sun, 18 Oct 2015 05:47:13 -0400 Received: from mail-pa0-f48.google.com ([209.85.220.48]:35533 "EHLO mail-pa0-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752854AbbJRJrM (ORCPT ); Sun, 18 Oct 2015 05:47:12 -0400 Received: by pasz6 with SMTP id z6so534042pas.2 for ; Sun, 18 Oct 2015 02:47:12 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=fH2GVxRwehzWvPlMEX0MyKXt+8aPMIG0Qs61C0mHRYc=; b=FUJSE00cguMrkr1V2OsUThV9AlZDB4MDh/60fFBzV/PQYKCYNMa6I7KqeA/o5HAvKz PKVGWCJm+rnSlJHw1lYRWIVGGfLISXYs92r2PaTo68Dd4DIqvPaWVYjbFXTMB4qNeyhU GwVMUpBGnQXCnDGOG1QS7xXGMMbv14X0yQLF0dVWq38EzDbQnH7qFi/7G17qayGurSIA nsNtaC4dsVnH77FDlhufTpiQwF7VP1LqeIBMy1ZYeH7xnTBv0+KO97ZrGYZIKfrbw/Md Ne05qxMnJO0usDge2gHaATjc+u8fXcRNHTu7H7DcRAHz0nCyFXWsMtGa5lDpx8onAQed Uzeg== X-Gm-Message-State: ALoCoQkCg04rJL+GbUY5ueFlqahpxlnkF/ddzsP9E5YTKOT0f9hCYUMvkLV5iMZKze75ZwzG0Kqs X-Received: by 10.68.181.130 with SMTP id dw2mr27602323pbc.70.1445161632077; Sun, 18 Oct 2015 02:47:12 -0700 (PDT) Received: from localhost.localdomain (edge04.meizu.com. [103.26.122.10]) by smtp.gmail.com with ESMTPSA id g12sm30655370pat.36.2015.10.18.02.47.09 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Sun, 18 Oct 2015 02:47:11 -0700 (PDT) From: WEN Pingbo To: dmitry.torokhov@gmail.com, arnd@arndb.de Cc: linux-kernel@vger.kernel.org, linux-input@vger.kernel.org, y2038@lists.linaro.org, WEN Pingbo Subject: [PATCH] hil_mlc: convert timeval to timespec64 Date: Sun, 18 Oct 2015 17:45:19 +0800 Message-Id: <1445161519-27000-1-git-send-email-pingbo.wen@linaro.org> X-Mailer: git-send-email 1.9.1 Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Using struct timeval will cause time overflow in 2038, replacing it with a 64bit version. In addition, the origin driver try to covert usec to jiffies manually in hilse_donode(). This is not a universal and safe way, using nsecs_to_jiffies() to fix that. Signed-off-by: WEN Pingbo --- drivers/input/serio/hil_mlc.c | 31 +++++++++++++++++-------------- drivers/input/serio/hp_sdc_mlc.c | 10 ++++++---- include/linux/hil_mlc.h | 4 ++-- 3 files changed, 25 insertions(+), 20 deletions(-) diff --git a/drivers/input/serio/hil_mlc.c b/drivers/input/serio/hil_mlc.c index 65605e4..4e3b926 100644 --- a/drivers/input/serio/hil_mlc.c +++ b/drivers/input/serio/hil_mlc.c @@ -274,14 +274,14 @@ static int hilse_match(hil_mlc *mlc, int unused) /* An LCV used to prevent runaway loops, forces 5 second sleep when reset. */ static int hilse_init_lcv(hil_mlc *mlc, int unused) { - struct timeval tv; + struct timespec64 ts64; - do_gettimeofday(&tv); + ktime_get_ts64(&ts64); - if (mlc->lcv && (tv.tv_sec - mlc->lcv_tv.tv_sec) < 5) + if (mlc->lcv && (ts64.tv_sec - mlc->lcv_ts64.tv_sec) < 5) return -1; - mlc->lcv_tv = tv; + mlc->lcv_ts64 = ts64; mlc->lcv = 0; return 0; @@ -605,7 +605,7 @@ static inline void hilse_setup_input(hil_mlc *mlc, const struct hilse_node *node } mlc->istarted = 1; mlc->intimeout = node->arg; - do_gettimeofday(&(mlc->instart)); + ktime_get_ts64(&(mlc->instart)); mlc->icount = 15; memset(mlc->ipacket, 0, 16 * sizeof(hil_packet)); BUG_ON(down_trylock(&mlc->isem)); @@ -710,7 +710,7 @@ static int hilse_donode(hil_mlc *mlc) break; } mlc->ostarted = 0; - do_gettimeofday(&(mlc->instart)); + ktime_get_ts64(&(mlc->instart)); write_unlock_irqrestore(&mlc->lock, flags); nextidx = HILSEN_NEXT; break; @@ -731,18 +731,21 @@ static int hilse_donode(hil_mlc *mlc) #endif while (nextidx & HILSEN_SCHED) { - struct timeval tv; + struct timespec64 ts64; if (!sched_long) goto sched; - do_gettimeofday(&tv); - tv.tv_usec += USEC_PER_SEC * (tv.tv_sec - mlc->instart.tv_sec); - tv.tv_usec -= mlc->instart.tv_usec; - if (tv.tv_usec >= mlc->intimeout) goto sched; - tv.tv_usec = (mlc->intimeout - tv.tv_usec) * HZ / USEC_PER_SEC; - if (!tv.tv_usec) goto sched; - mod_timer(&hil_mlcs_kicker, jiffies + tv.tv_usec); + ktime_get_ts64(&ts64); + ts64.tv_nsec += NSEC_PER_SEC * + (ts64.tv_sec - mlc->instart.tv_sec); + ts64.tv_nsec -= mlc->instart.tv_nsec; + if (ts64.tv_nsec >= (mlc->intimeout * NSEC_PER_USEC)) + goto sched; + ts64.tv_nsec = mlc->intimeout * NSEC_PER_USEC - ts64.tv_nsec; + if (!ts64.tv_nsec) goto sched; + mod_timer(&hil_mlcs_kicker, + jiffies + nsecs_to_jiffies(ts64.tv_nsec)); break; sched: tasklet_schedule(&hil_mlcs_tasklet); diff --git a/drivers/input/serio/hp_sdc_mlc.c b/drivers/input/serio/hp_sdc_mlc.c index d50f067..369885d 100644 --- a/drivers/input/serio/hp_sdc_mlc.c +++ b/drivers/input/serio/hp_sdc_mlc.c @@ -149,7 +149,7 @@ static int hp_sdc_mlc_in(hil_mlc *mlc, suseconds_t timeout) /* Try to down the semaphore */ if (down_trylock(&mlc->isem)) { - struct timeval tv; + struct timespec64 ts64; if (priv->emtestmode) { mlc->ipacket[0] = HIL_ERR_INT | (mlc->opacket & @@ -160,9 +160,11 @@ static int hp_sdc_mlc_in(hil_mlc *mlc, suseconds_t timeout) /* printk(KERN_DEBUG PREFIX ">[%x]\n", mlc->ipacket[0]); */ goto wasup; } - do_gettimeofday(&tv); - tv.tv_usec += USEC_PER_SEC * (tv.tv_sec - mlc->instart.tv_sec); - if (tv.tv_usec - mlc->instart.tv_usec > mlc->intimeout) { + ktime_get_ts64(&ts64); + ts64.tv_nsec += NSEC_PER_SEC * + (ts64.tv_sec - mlc->instart.tv_sec); + if (ts64.tv_nsec - mlc->instart.tv_nsec > mlc->intimeout * + NSEC_PER_USEC) { /* printk("!%i %i", tv.tv_usec - mlc->instart.tv_usec, mlc->intimeout); diff --git a/include/linux/hil_mlc.h b/include/linux/hil_mlc.h index 394a840..a6b62fb 100644 --- a/include/linux/hil_mlc.h +++ b/include/linux/hil_mlc.h @@ -144,12 +144,12 @@ struct hil_mlc { hil_packet ipacket[16]; hil_packet imatch; int icount; - struct timeval instart; + struct timespec64 instart; suseconds_t intimeout; int ddi; /* Last operational device id */ int lcv; /* LCV to throttle loops */ - struct timeval lcv_tv; /* Time loop was started */ + struct timespec64 lcv_ts64; /* Time loop was started */ int di_map[7]; /* Maps below items to live devs */ struct hil_mlc_devinfo di[HIL_MLC_DEVMEM];