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ACPI / video: Propagate the error code for acpi_video_register

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Report the actual error code from acpi_bus_register_driver(), it may
help future debugging (typically ENODEV as previously reported, but the
unusual cases are where it may help most).

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Chris Wilson 2015-03-01 10:41:38 +00:00 committed by Rafael J. Wysocki
parent 6e17cb1288
commit 28d634038d
1 changed files with 5 additions and 4 deletions
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9
drivers/acpi/video.c
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@ -2110,7 +2110,8 @@ static int __init intel_opregion_present(void)
int acpi_video_register(void)
{
int result = 0;
int ret;
if (register_count) {
/*
* if the function of acpi_video_register is already called,
@ -2122,9 +2123,9 @@ int acpi_video_register(void)
mutex_init(&video_list_lock);
INIT_LIST_HEAD(&video_bus_head);
result = acpi_bus_register_driver(&acpi_video_bus);
if (result < 0)
return -ENODEV;
ret = acpi_bus_register_driver(&acpi_video_bus);
if (ret)
return ret;
/*
* When the acpi_video_bus is loaded successfully, increase