target/linux/brcm2708/patches-3.10/0103-lirc_rpi-Don-t-register-with-lirc_dev-if-we-can-t-cl.patch

   1 From a4a78ef42a4720e11e6489dc44936153e601d89f Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Du=C5=A1an=20Dragi=C4=87?= <dragic.dusan@gmail.com>
   3 Date: Wed, 25 Sep 2013 18:44:05 +0200
   4 Subject: [PATCH 103/196] lirc_rpi: Don't register with lirc_dev if we can't
   5  claim gpio pins
   6
   7 Currently the lirc_rpi module always registers a new lirc device.
   8 In case the gpio pins can't be claimed it exits without unregistering.
   9
  10 Skip registering with lirc_dev if pins can't be claimed.
  11 Also, don't free gpio pins that we haven't claimed.
  12 ---
  13  drivers/staging/media/lirc/lirc_rpi.c | 13 +++++++------
  14  1 file changed, 7 insertions(+), 6 deletions(-)
  15
  16 diff --git a/drivers/staging/media/lirc/lirc_rpi.c b/drivers/staging/media/lirc/lirc_rpi.c
  17 index cb32042..c76f696 100644
  18 --- a/drivers/staging/media/lirc/lirc_rpi.c
  19 +++ b/drivers/staging/media/lirc/lirc_rpi.c
  20 @@ -590,8 +590,6 @@ static int __init lirc_rpi_init(void)
  21
  22  static void lirc_rpi_exit(void)
  23  {
  24 -       gpio_free(gpio_out_pin);
  25 -       gpio_free(gpio_in_pin);
  26         platform_device_unregister(lirc_rpi_dev);
  27         platform_driver_unregister(&lirc_rpi_driver);
  28         lirc_buffer_free(&rbuf);
  29 @@ -623,6 +621,10 @@ static int __init lirc_rpi_init_module(void)
  30                 goto exit_rpi;
  31         }
  32
  33 +       result = init_port();
  34 +       if (result < 0)
  35 +               goto exit_rpi;
  36 +
  37         driver.features = LIRC_CAN_SET_SEND_DUTY_CYCLE |
  38                           LIRC_CAN_SET_SEND_CARRIER |
  39                           LIRC_CAN_SEND_PULSE |
  40 @@ -640,10 +642,6 @@ static int __init lirc_rpi_init_module(void)
  41
  42         printk(KERN_INFO LIRC_DRIVER_NAME ": driver registered!\n");
  43
  44 -       result = init_port();
  45 -       if (result < 0)
  46 -               goto exit_rpi;
  47 -
  48         return 0;
  49
  50         exit_rpi:
  51 @@ -654,6 +652,9 @@ static int __init lirc_rpi_init_module(void)
  52
  53  static void __exit lirc_rpi_exit_module(void)
  54  {
  55 +       gpio_free(gpio_out_pin);
  56 +       gpio_free(gpio_in_pin);
  57 +
  58         lirc_rpi_exit();
  59
  60         lirc_unregister_driver(driver.minor);
  61 --
  62 1.9.1
  63