[media] lirc_zilog: Remove unneeded tests for existence of the IR Tx function

The driver is now structured so that it must handle an IR Tx unit
for a Z8 IR chip, or it refuses to handle that Z8 IR chip.  This
allows us to assume that ir->tx != NULL in a few places in the driver,
and also allows us to always report Tx is available to userspace.
Get rid of unneeded tests for ir->tx == NULL and always report that
Tx is available.

Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/staging/lirc/lirc_zilog.c b/drivers/staging/lirc/lirc_zilog.c
index f7aa5e4e98b383c971512a7edacf8d8754c56d52..24d4b52bd79e311b747c98eca7cf3bc24f1030f5 100644 (file)
--- a/drivers/staging/lirc/lirc_zilog.c
+++ b/drivers/staging/lirc/lirc_zilog.c
@@ -206,8 +206,7 @@ static int add_to_buf(struct IR *ir)
                                return -ENODATA;
                        }
                        schedule_timeout((100 * HZ + 999) / 1000);
-                       if (ir->tx != NULL)
-                               ir->tx->need_boot = 1;
+                       ir->tx->need_boot = 1;
 
                        ++failures;
                        mutex_unlock(&ir->ir_lock);
@@ -1010,10 +1009,9 @@ static long ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
        int result;
        unsigned long mode, features = 0;
 
+       features |= LIRC_CAN_SEND_PULSE;
        if (ir->rx != NULL)
                features |= LIRC_CAN_REC_LIRCCODE;
-       if (ir->tx != NULL)
-               features |= LIRC_CAN_SEND_PULSE;
 
        switch (cmd) {
        case LIRC_GET_LENGTH:
@@ -1040,15 +1038,9 @@ static long ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
                        result = -EINVAL;
                break;
        case LIRC_GET_SEND_MODE:
-               if (!(features&LIRC_CAN_SEND_MASK))
-                       return -ENOSYS;
-
                result = put_user(LIRC_MODE_PULSE, (unsigned long *) arg);
                break;
        case LIRC_SET_SEND_MODE:
-               if (!(features&LIRC_CAN_SEND_MASK))
-                       return -ENOSYS;
-
                result = get_user(mode, (unsigned long *) arg);
                if (!result && mode != LIRC_MODE_PULSE)
                        return -EINVAL;
@@ -1380,12 +1372,9 @@ static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
         * after registering with lirc as otherwise hotplug seems to take
         * 10s to create the lirc device.
         */
-       if (ir->tx != NULL) {
-               /* Special TX init */
-               ret = tx_init(ir->tx);
-               if (ret != 0)
-                       goto out_unregister;
-       }
+       ret = tx_init(ir->tx);
+       if (ret != 0)
+               goto out_unregister;
 
        zilog_info("probe of IR %s on %s (i2c-%d) done. IR unit ready.\n",
                   tx_probe ? "Tx" : "Rx", adap->name, adap->nr);