Wall time obtained from ktime_get_real is susceptible to sudden jumps due to
user setting the time or due to NTP. Boot time is constantly increasing time
better suited for comparing two timestamps.
Signed-off-by: Abhilash Jindal <klock.android@xxxxxxxxx>
---
drivers/media/dvb-core/dvb_frontend.c | 8 ++++----
drivers/media/dvb-frontends/stv0299.c | 4 ++--
2 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/media/dvb-core/dvb_frontend.c b/drivers/media/dvb-core/dvb_frontend.c
index c38ef1a..8058df9 100644
--- a/drivers/media/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb-core/dvb_frontend.c
@@ -901,10 +901,10 @@ void dvb_frontend_sleep_until(ktime_t *waketime, u32 add_usec)
s32 delta, newdelta;
ktime_add_us(*waketime, add_usec);
- delta = ktime_us_delta(ktime_get_real(), *waketime);
+ delta = ktime_us_delta(ktime_get_boottime(), *waketime);
if (delta > 2500) {
msleep((delta - 1500) / 1000);
- newdelta = ktime_us_delta(ktime_get_real(), *waketime);
+ newdelta = ktime_us_delta(ktime_get_boottime(), *waketime);
delta = (newdelta > delta) ? 0 : newdelta;
}
if (delta > 0)
@@ -2454,7 +2454,7 @@ static int dvb_frontend_ioctl_legacy(struct file *file,
u8 last = 1;
if (dvb_frontend_debug)
printk("%s switch command: 0x%04lx\n", __func__, swcmd);
- nexttime = ktime_get_real();
+ nexttime = ktime_get_boottime();
if (dvb_frontend_debug)
tv[0] = nexttime;
/* before sending a command, initialize by sending
@@ -2465,7 +2465,7 @@ static int dvb_frontend_ioctl_legacy(struct file *file,
for (i = 0; i < 9; i++) {
if (dvb_frontend_debug)
- tv[i+1] = ktime_get_real();
+ tv[i+1] = ktime_get_boottime();
if ((swcmd & 0x01) != last) {
/* set voltage to (last ? 13V : 18V) */
fe->ops.set_voltage(fe, (last) ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18);
diff --git a/drivers/media/dvb-frontends/stv0299.c b/drivers/media/dvb-frontends/stv0299.c
index a817780..c43f36d 100644
--- a/drivers/media/dvb-frontends/stv0299.c
+++ b/drivers/media/dvb-frontends/stv0299.c
@@ -422,7 +422,7 @@ static int stv0299_send_legacy_dish_cmd (struct dvb_frontend* fe, unsigned long
if (debug_legacy_dish_switch)
printk ("%s switch command: 0x%04lx\n",__func__, cmd);
- nexttime = ktime_get_real();
+ nexttime = ktime_get_boottime();
if (debug_legacy_dish_switch)
tv[0] = nexttime;
stv0299_writeregI (state, 0x0c, reg0x0c | 0x50); /* set LNB to 18V */
@@ -431,7 +431,7 @@ static int stv0299_send_legacy_dish_cmd (struct dvb_frontend* fe, unsigned long
for (i=0; i<9; i++) {
if (debug_legacy_dish_switch)
- tv[i+1] = ktime_get_real();
+ tv[i+1] = ktime_get_boottime();
if((cmd & 0x01) != last) {
/* set voltage to (last ? 13V : 18V) */
stv0299_writeregI (state, 0x0c, reg0x0c | (last ? lv_mask : 0x50));
--
1.7.9.5
--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
