[media] rc-core: move timeout and checks to lirc

The lirc TX functionality expects the process which writes (TX) data to
the lirc dev to sleep until the actual data has been transmitted by the
hardware.

Since the same timeout calculation is duplicated in more than one driver
(and would have to be duplicated in even more drivers as they gain TX
support), it makes sense to move this timeout calculation to the lirc
layer instead.

At the same time, centralize some of the sanity checks.

Signed-off-by: David Härdeman <david@hardeman.nu>
Cc: Jarod Wilson <jwilson@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 0 insertions, 18 deletions

diff --git a/drivers/media/rc/mceusb.c b/drivers/media/rc/mceusb.c
index d289fd42729f..a5c6c1c2af82 100644
--- a/drivers/media/rc/mceusb.c
+++ b/drivers/media/rc/mceusb.c
@@ -791,10 +791,6 @@ static int mceusb_tx_ir(struct rc_dev *dev, unsigned *txbuf, unsigned count)
         int i, ret = 0;
         int cmdcount = 0;
         unsigned char *cmdbuf; /* MCE command buffer */
-        long signal_duration = 0; /* Singnal length in us */
-        struct timeval start_time, end_time;
-
-        do_gettimeofday(&start_time);
 
         cmdbuf = kzalloc(sizeof(unsigned) * MCE_CMDBUF_SIZE, GFP_KERNEL);
         if (!cmdbuf)
@@ -807,7 +803,6 @@ static int mceusb_tx_ir(struct rc_dev *dev, unsigned *txbuf, unsigned count)
 
         /* Generate mce packet data */
         for (i = 0; (i < count) && (cmdcount < MCE_CMDBUF_SIZE); i++) {
-                signal_duration += txbuf[i];
                 txbuf[i] = txbuf[i] / MCE_TIME_UNIT;
 
                 do { /* loop to support long pulses/spaces > 127*50us=6.35ms */
@@ -850,19 +845,6 @@ static int mceusb_tx_ir(struct rc_dev *dev, unsigned *txbuf, unsigned count)
         /* Transmit the command to the mce device */
         mce_async_out(ir, cmdbuf, cmdcount);
 
-        /*
-         * The lircd gap calculation expects the write function to
-         * wait the time it takes for the ircommand to be sent before
-         * it returns.
-         */
-        do_gettimeofday(&end_time);
-        signal_duration -= (end_time.tv_usec - start_time.tv_usec) +
-                           (end_time.tv_sec - start_time.tv_sec) * 1000000;
-
-        /* delay with the closest number of ticks */
-        set_current_state(TASK_INTERRUPTIBLE);
-        schedule_timeout(usecs_to_jiffies(signal_duration));
-
 out:
         kfree(cmdbuf);
         return ret ? ret : count;