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Commit 4607bb7a authored by Mauro Carvalho Chehab's avatar Mauro Carvalho Chehab
Browse files

[media] dib8000: Fix the sleep time at the state machine 



msleep() is not too precise: its precision depends on the
HZ config. As the driver selects precise timings for the
state machine, change it to usleep_range().

Acked-By: default avatarPatrick Boettcher <pboettcher@kernellabs.com>
Signed-off-by: default avatarMauro Carvalho Chehab <m.chehab@samsung.com>
parent 40d1a7c3

drivers/media/dvb-frontends/dib8000.c

+12 −3
Original line number Diff line number Diff line
@@ -3606,10 +3606,19 @@ static int dib8000_set_frontend(struct dvb_frontend *fe) 
			else if ((time_slave != FE_CALLBACK_TIME_NEVER) && (time_slave > time))

				time = time_slave;

		}

		if (time != FE_CALLBACK_TIME_NEVER)

			msleep(time / 10);

		else

		if (time == FE_CALLBACK_TIME_NEVER)

			break;



		/*

		 * Despite dib8000_agc_startup returns time at a 0.1 ms range,

		 * the actual sleep time depends on CONFIG_HZ. The worse case

		 * is when CONFIG_HZ=100. In such case, the minimum granularity

		 * is 10ms. On some real field tests, the tuner sometimes don't

		 * lock when this timer is lower than 10ms. So, enforce a 10ms

		 * granularity.

		 */

		time = 10 * (time + 99)/100;

		usleep_range(time * 1000, (time + 1) * 1000);

		exit_condition = 1;

		for (index_frontend = 0; (index_frontend < MAX_NUMBER_OF_FRONTENDS) && (state->fe[index_frontend] != NULL); index_frontend++) {

			if (dib8000_get_tune_state(state->fe[index_frontend]) != CT_AGC_STOP) {