linux-kernel - [PATCH] media: stv0299: use time_after

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Message-Id: <1644481929-14955-1-git-send-email-wangqing@vivo.com>
Date:   Thu, 10 Feb 2022 00:32:09 -0800
From:   Qing Wang <wangqing@...o.com>
To:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Wang Qing <wangqing@...o.com>
Subject: [PATCH] media: stv0299: use time_after_eq() 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/dvb-frontends/stv0299.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/media/dvb-frontends/stv0299.c b/drivers/media/dvb-frontends/stv0299.c
index 421395e..867ae04
--- a/drivers/media/dvb-frontends/stv0299.c
+++ b/drivers/media/dvb-frontends/stv0299.c
@@ -183,7 +183,7 @@ static int stv0299_wait_diseqc_fifo (struct stv0299_state* state, int timeout)
 	dprintk ("%s\n", __func__);
 
 	while (stv0299_readreg(state, 0x0a) & 1) {
-		if (jiffies - start > timeout) {
+		if (time_after(jiffies, start + timeout)) {
 			dprintk ("%s: timeout!!\n", __func__);
 			return -ETIMEDOUT;
 		}
@@ -200,7 +200,7 @@ static int stv0299_wait_diseqc_idle (struct stv0299_state* state, int timeout)
 	dprintk ("%s\n", __func__);
 
 	while ((stv0299_readreg(state, 0x0a) & 3) != 2 ) {
-		if (jiffies - start > timeout) {
+		if (time_after(jiffies, start + timeout)) {
 			dprintk ("%s: timeout!!\n", __func__);
 			return -ETIMEDOUT;
 		}
-- 
2.7.4