diff options
Diffstat (limited to 'drivers/platform/x86')
| -rw-r--r-- | drivers/platform/x86/toshiba_acpi.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c index 446ddc1fa3c2..48c79b257178 100644 --- a/drivers/platform/x86/toshiba_acpi.c +++ b/drivers/platform/x86/toshiba_acpi.c @@ -404,6 +404,19 @@ static int sci_open(struct toshiba_acpi_dev *dev) } else if (out[0] == TOS_ALREADY_OPEN) { pr_info("Toshiba SCI already opened\n"); return 1; + } else if (out[0] == TOS_NOT_SUPPORTED) { + /* Some BIOSes do not have the SCI open/close functions + * implemented and return 0x8000 (Not Supported), failing to + * register some supported features. + * + * Simply return 1 if we hit those affected laptops to make the + * supported features work. + * + * In the case that some laptops really do not support the SCI, + * all the SCI dependent functions check for TOS_NOT_SUPPORTED, + * and thus, not registering support for the queried feature. + */ + return 1; } else if (out[0] == TOS_NOT_PRESENT) { pr_info("Toshiba SCI is not present\n"); } |