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Date: Sun, 25 May 2014 14:39:39 +0200
From: Manuel Schölling <manuel.schoelling@....de>
To: crope@....fi
Cc: m.chehab@...sung.com, gregkh@...uxfoundation.org,
linux-media@...r.kernel.org, devel@...verdev.osuosl.org,
linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
Manuel Schölling <manuel.schoelling@....de>
Subject: [PATCH] msi3103: Use time_before_eq()
To be future-proof and for better readability the time comparisons are
modified to use time_before_eq() instead of plain, error-prone math.
Signed-off-by: Manuel Schölling <manuel.schoelling@....de>
---
drivers/staging/media/msi3101/sdr-msi3101.c | 28 +++++++++++++--------------
1 file changed, 14 insertions(+), 14 deletions(-)
diff --git a/drivers/staging/media/msi3101/sdr-msi3101.c b/drivers/staging/media/msi3101/sdr-msi3101.c
index 65d351f..7a0a8ca 100644
--- a/drivers/staging/media/msi3101/sdr-msi3101.c
+++ b/drivers/staging/media/msi3101/sdr-msi3101.c
@@ -207,10 +207,10 @@ static int msi3101_convert_stream_504(struct msi3101_state *s, u8 *dst,
dst_len += 1008;
}
- /* calculate samping rate and output it in 10 seconds intervals */
- if ((s->jiffies_next + msecs_to_jiffies(10000)) <= jiffies) {
+ /* calculate sampling rate and output it in 10 seconds intervals */
+ if (time_before_eq(s->jiffies_next + 10 * HZ, jiffies)) {
unsigned long jiffies_now = jiffies;
- unsigned long msecs = jiffies_to_msecs(jiffies_now) - jiffies_to_msecs(s->jiffies_next);
+ unsigned long msecs = jiffies_to_msecs(jiffies_now - s->jiffies_next);
unsigned int samples = sample_num[i_max - 1] - s->sample;
s->jiffies_next = jiffies_now;
s->sample = sample_num[i_max - 1];
@@ -265,7 +265,7 @@ static int msi3101_convert_stream_504_u8(struct msi3101_state *s, u8 *dst,
dst_len += 1008;
}
- /* calculate samping rate and output it in 10 seconds intervals */
+ /* calculate sampling rate and output it in 10 seconds intervals */
if (unlikely(time_is_before_jiffies(s->jiffies_next))) {
#define MSECS 10000UL
unsigned int samples = sample_num[i_max - 1] - s->sample;
@@ -359,10 +359,10 @@ static int msi3101_convert_stream_384(struct msi3101_state *s, u8 *dst,
dst_len += 984;
}
- /* calculate samping rate and output it in 10 seconds intervals */
- if ((s->jiffies_next + msecs_to_jiffies(10000)) <= jiffies) {
+ /* calculate sampling rate and output it in 10 seconds intervals */
+ if (time_before_eq(s->jiffies_next + 10 * HZ, jiffies)) {
unsigned long jiffies_now = jiffies;
- unsigned long msecs = jiffies_to_msecs(jiffies_now) - jiffies_to_msecs(s->jiffies_next);
+ unsigned long msecs = jiffies_to_msecs(jiffies_now - s->jiffies_next);
unsigned int samples = sample_num[i_max - 1] - s->sample;
s->jiffies_next = jiffies_now;
s->sample = sample_num[i_max - 1];
@@ -424,10 +424,10 @@ static int msi3101_convert_stream_336(struct msi3101_state *s, u8 *dst,
dst_len += 1008;
}
- /* calculate samping rate and output it in 10 seconds intervals */
- if ((s->jiffies_next + msecs_to_jiffies(10000)) <= jiffies) {
+ /* calculate sampling rate and output it in 10 seconds intervals */
+ if (time_before_eq(s->jiffies_next + 10 * HZ, jiffies)) {
unsigned long jiffies_now = jiffies;
- unsigned long msecs = jiffies_to_msecs(jiffies_now) - jiffies_to_msecs(s->jiffies_next);
+ unsigned long msecs = jiffies_to_msecs(jiffies_now - s->jiffies_next);
unsigned int samples = sample_num[i_max - 1] - s->sample;
s->jiffies_next = jiffies_now;
s->sample = sample_num[i_max - 1];
@@ -487,10 +487,10 @@ static int msi3101_convert_stream_252(struct msi3101_state *s, u8 *dst,
dst_len += 1008;
}
- /* calculate samping rate and output it in 10 seconds intervals */
- if ((s->jiffies_next + msecs_to_jiffies(10000)) <= jiffies) {
+ /* calculate sampling rate and output it in 10 seconds intervals */
+ if (time_before_eq(s->jiffies_next + 10 * HZ, jiffies)) {
unsigned long jiffies_now = jiffies;
- unsigned long msecs = jiffies_to_msecs(jiffies_now) - jiffies_to_msecs(s->jiffies_next);
+ unsigned long msecs = jiffies_to_msecs(jiffies_now - s->jiffies_next);
unsigned int samples = sample_num[i_max - 1] - s->sample;
s->jiffies_next = jiffies_now;
s->sample = sample_num[i_max - 1];
@@ -560,7 +560,7 @@ static int msi3101_convert_stream_252_u16(struct msi3101_state *s, u8 *dst,
dst_len += 1008;
}
- /* calculate samping rate and output it in 10 seconds intervals */
+ /* calculate sampling rate and output it in 10 seconds intervals */
if (unlikely(time_is_before_jiffies(s->jiffies_next))) {
#define MSECS 10000UL
unsigned int samples = sample_num[i_max - 1] - s->sample;
--
1.7.10.4
--
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