target/linux/s3c24xx/patches-2.6.24/1275-lis302dl-allow-unloading-module.patch.patch

   1 From 399efd68e115b6548fe943a7a9fbf04753970e61 Mon Sep 17 00:00:00 2001
   2 From: Simon Kagstrom <simon.kagstrom@gmail.com>
   3 Date: Wed, 13 Aug 2008 11:27:11 +0100
   4 Subject: [PATCH] lis302dl-allow-unloading-module.patch
   5
   6 This patch fixes module unloading for the accelerometer (actually module
   7 loading failed before). The two problems were that the interrupt was not
   8 unregistered, and that the device was left in a "strange" state.
   9
  10 Signed-off-by: Simon Kagstrom <simon.kagstrom@gmail.com>
  11 ---
  12  drivers/input/misc/lis302dl.c |    6 +++++-
  13  1 files changed, 5 insertions(+), 1 deletions(-)
  14
  15 diff --git a/drivers/input/misc/lis302dl.c b/drivers/input/misc/lis302dl.c
  16 index de8478d..b97cae7 100644
  17 --- a/drivers/input/misc/lis302dl.c
  18 +++ b/drivers/input/misc/lis302dl.c
  19 @@ -462,11 +462,15 @@ static int __devexit lis302dl_remove(struct spi_device *spi)
  20         struct lis302dl_info *lis = dev_get_drvdata(&spi->dev);
  21         unsigned long flags;
  22
  23 -       /* power down the device */
  24 +       /* Reset and power down the device */
  25         local_save_flags(flags);
  26 +       reg_write(lis, LIS302DL_REG_CTRL3, 0x00);
  27 +       reg_write(lis, LIS302DL_REG_CTRL2, 0x00);
  28         reg_write(lis, LIS302DL_REG_CTRL1, 0x00);
  29         local_irq_restore(flags);
  30
  31 +       /* Cleanup resources */
  32 +       free_irq(lis->spi_dev->irq, lis);
  33         sysfs_remove_group(&spi->dev.kobj, &lis302dl_attr_group);
  34         input_unregister_device(lis->input_dev);
  35         if (lis->input_dev)
  36 --
  37 1.5.6.5
  38