linux-kernel - [PATCH V2 13/13] media: vivid: use time_is_after

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Date:   Thu, 10 Feb 2022 18:30:36 -0800
From:   Qing Wang <wangqing@...o.com>
To:     Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        Roger Pau Monné <roger.pau@...rix.com>,
        Jens Axboe <axboe@...nel.dk>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        "Pan, Xinhui" <Xinhui.Pan@....com>,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
        Jiri Kosina <jikos@...nel.org>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Alasdair Kergon <agk@...hat.com>,
        Mike Snitzer <snitzer@...hat.com>, dm-devel@...hat.com,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hverkuil@...all.nl>,
        xen-devel@...ts.xenproject.org, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
        intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        amd-gfx@...ts.freedesktop.org, linux-input@...r.kernel.org,
        linux-media@...r.kernel.org
Cc:     Wang Qing <wangqing@...o.com>
Subject: [PATCH V2 13/13] media: vivid: use time_is_after_jiffies() instead of jiffies judgment

From: Wang Qing <wangqing@...o.com>

It is better to use time_xxx() directly instead of jiffies judgment
for understanding.

Signed-off-by: Wang Qing <wangqing@...o.com>
---
 drivers/media/test-drivers/vivid/vivid-kthread-cap.c   | 3 ++-
 drivers/media/test-drivers/vivid/vivid-kthread-out.c   | 3 ++-
 drivers/media/test-drivers/vivid/vivid-kthread-touch.c | 3 ++-
 drivers/media/test-drivers/vivid/vivid-sdr-cap.c       | 3 ++-
 4 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/media/test-drivers/vivid/vivid-kthread-cap.c b/drivers/media/test-drivers/vivid/vivid-kthread-cap.c
index 6baa046..295f4a3
--- a/drivers/media/test-drivers/vivid/vivid-kthread-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-kthread-cap.c
@@ -18,6 +18,7 @@
 #include <linux/freezer.h>
 #include <linux/random.h>
 #include <linux/v4l2-dv-timings.h>
+#include <linux/jiffies.h>
 #include <asm/div64.h>
 #include <media/videobuf2-vmalloc.h>
 #include <media/v4l2-dv-timings.h>
@@ -893,7 +894,7 @@ static int vivid_thread_vid_cap(void *data)
 			next_jiffies_since_start = jiffies_since_start;
 
 		wait_jiffies = next_jiffies_since_start - jiffies_since_start;
-		while (jiffies - cur_jiffies < wait_jiffies &&
+		while (time_is_after_jiffies(cur_jiffies + wait_jiffies) &&
 		       !kthread_should_stop())
 			schedule();
 	}
diff --git a/drivers/media/test-drivers/vivid/vivid-kthread-out.c b/drivers/media/test-drivers/vivid/vivid-kthread-out.c
index b6d4316..13f737e
--- a/drivers/media/test-drivers/vivid/vivid-kthread-out.c
+++ b/drivers/media/test-drivers/vivid/vivid-kthread-out.c
@@ -18,6 +18,7 @@
 #include <linux/freezer.h>
 #include <linux/random.h>
 #include <linux/v4l2-dv-timings.h>
+#include <linux/jiffies.h>
 #include <asm/div64.h>
 #include <media/videobuf2-vmalloc.h>
 #include <media/v4l2-dv-timings.h>
@@ -234,7 +235,7 @@ static int vivid_thread_vid_out(void *data)
 			next_jiffies_since_start = jiffies_since_start;
 
 		wait_jiffies = next_jiffies_since_start - jiffies_since_start;
-		while (jiffies - cur_jiffies < wait_jiffies &&
+		while (time_is_after_jiffies(cur_jiffies + wait_jiffies) &&
 		       !kthread_should_stop())
 			schedule();
 	}
diff --git a/drivers/media/test-drivers/vivid/vivid-kthread-touch.c b/drivers/media/test-drivers/vivid/vivid-kthread-touch.c
index f065faae..8828243
--- a/drivers/media/test-drivers/vivid/vivid-kthread-touch.c
+++ b/drivers/media/test-drivers/vivid/vivid-kthread-touch.c
@@ -5,6 +5,7 @@
  */
 
 #include <linux/freezer.h>
+#include <linux/jiffies.h>
 #include "vivid-core.h"
 #include "vivid-kthread-touch.h"
 #include "vivid-touch-cap.h"
@@ -134,7 +135,7 @@ static int vivid_thread_touch_cap(void *data)
 			next_jiffies_since_start = jiffies_since_start;
 
 		wait_jiffies = next_jiffies_since_start - jiffies_since_start;
-		while (jiffies - cur_jiffies < wait_jiffies &&
+		while (time_is_after_jiffies(cur_jiffies + wait_jiffies) &&
 		       !kthread_should_stop())
 			schedule();
 	}
diff --git a/drivers/media/test-drivers/vivid/vivid-sdr-cap.c b/drivers/media/test-drivers/vivid/vivid-sdr-cap.c
index 59fd508..f82856b
--- a/drivers/media/test-drivers/vivid/vivid-sdr-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-sdr-cap.c
@@ -17,6 +17,7 @@
 #include <media/v4l2-event.h>
 #include <media/v4l2-dv-timings.h>
 #include <linux/fixp-arith.h>
+#include <linux/jiffies.h>
 
 #include "vivid-core.h"
 #include "vivid-ctrls.h"
@@ -205,7 +206,7 @@ static int vivid_thread_sdr_cap(void *data)
 			next_jiffies_since_start = jiffies_since_start;
 
 		wait_jiffies = next_jiffies_since_start - jiffies_since_start;
-		while (jiffies - cur_jiffies < wait_jiffies &&
+		while (time_is_after_jiffies(cur_jiffies + wait_jiffies) &&
 		       !kthread_should_stop())
 			schedule();
 	}
-- 
2.7.4