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| author | Andy Walls <awalls@md.metrocast.net> | 2011-01-26 21:06:43 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-03-22 19:23:49 -0300 |
| commit | 12d896e1c17978599a98510fdfaff27a4e82c0bf (patch) | |
| tree | f66be96087a4cf1629737aca80567570ddefaa80 /drivers/staging | |
| parent | b443ac5a2836532af2315a4acb95c7a2cf721cbd (diff) | |
| download | linux-stable-12d896e1c17978599a98510fdfaff27a4e82c0bf.tar.gz linux-stable-12d896e1c17978599a98510fdfaff27a4e82c0bf.tar.bz2 linux-stable-12d896e1c17978599a98510fdfaff27a4e82c0bf.zip | |
[media] lirc_zilog: Restore checks for existence of the IR_tx object
This reverts commit 8090232a237ab62e22307fc060097da1a283dd66 and
adds an additional check for ir->tx == NULL.
The user may need us to handle an RX only unit. Apparently
there are TV capture units in existence with Rx only wiring
and/or RX only firmware for the on-board Zilog Z8 IR unit.
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/staging')
| -rw-r--r-- | drivers/staging/lirc/lirc_zilog.c | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/drivers/staging/lirc/lirc_zilog.c b/drivers/staging/lirc/lirc_zilog.c index 0aad0d7a74a3..7389b77ece8c 100644 --- a/drivers/staging/lirc/lirc_zilog.c +++ b/drivers/staging/lirc/lirc_zilog.c @@ -209,7 +209,8 @@ static int add_to_buf(struct IR *ir) return -ENODATA; } schedule_timeout((100 * HZ + 999) / 1000); - ir->tx->need_boot = 1; + if (ir->tx != NULL) + ir->tx->need_boot = 1; ++failures; mutex_unlock(&ir->ir_lock); @@ -1032,9 +1033,10 @@ 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: @@ -1061,9 +1063,15 @@ 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; @@ -1242,8 +1250,10 @@ static int ir_remove(struct i2c_client *client) } /* Good-bye Tx */ - i2c_set_clientdata(ir->tx->c, NULL); - kfree(ir->tx); + if (ir->tx != NULL) { + i2c_set_clientdata(ir->tx->c, NULL); + kfree(ir->tx); + } /* Good-bye IR */ del_ir_device(ir); @@ -1393,9 +1403,12 @@ 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. */ - ret = tx_init(ir->tx); - if (ret != 0) - goto out_unregister; + if (ir->tx != NULL) { + /* Special TX init */ + 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); |