diff options
author | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-10-07 17:39:46 -0400 |
---|---|---|
committer | Len Brown <len.brown@intel.com> | 2009-10-13 02:53:30 -0400 |
commit | 2c907b72db4dd4e8af6dccb6e0ac122d78627b8d (patch) | |
tree | 0a980ca3ea0020cc7145b62de382bc5ff2c81daf /drivers/acpi | |
parent | 2906206350b7e13e2047467cc29a0a2d78d71cb2 (diff) |
ACPI button: don't try to use a non-existent lid device
If a call comes in to check the lid state but there's no lid device
present, we should return -ENODEV.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi')
-rw-r--r-- | drivers/acpi/button.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c index 9335b87c517..0c9c6a9a002 100644 --- a/drivers/acpi/button.c +++ b/drivers/acpi/button.c | |||
@@ -251,6 +251,9 @@ int acpi_lid_open(void) | |||
251 | acpi_status status; | 251 | acpi_status status; |
252 | unsigned long long state; | 252 | unsigned long long state; |
253 | 253 | ||
254 | if (!lid_device) | ||
255 | return -ENODEV; | ||
256 | |||
254 | status = acpi_evaluate_integer(lid_device->handle, "_LID", NULL, | 257 | status = acpi_evaluate_integer(lid_device->handle, "_LID", NULL, |
255 | &state); | 258 | &state); |
256 | if (ACPI_FAILURE(status)) | 259 | if (ACPI_FAILURE(status)) |