diff options
| author | Krzysztof Kosiński <tweenk.pl@gmail.com> | 2009-03-19 23:22:31 +0100 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2009-04-03 12:03:27 -0400 |
| commit | 07de5bdb7bad607e29dc17c345717403a76a334c (patch) | |
| tree | 944d7898e8fb41ce2f30836d64264f1572ebbc1b /drivers/platform | |
| parent | a59d1637eb0e0a37ee0e5c92800c60abe3624e24 (diff) | |
| download | linux-07de5bdb7bad607e29dc17c345717403a76a334c.tar.bz2 | |
tc1100-wmi: Fix state reporting
The tc1100-wmi driver should print the current states of wireless LAN and
jogdial brightness control when "cat /sys/devices/platform/tc1100-wmi/wireless"
and "cat /sys/devices/platform/tc1100-wmi/jogdial" are executed, respectively.
What actually happens is that both of those commands print 0 regardless of the
hardware state. The cause is that wmi_query_block returns an ACPI_TYPE_INTEGER
rather than ACPI_TYPE_BUFFER as the driver assumes. Additionally, the driver
intends to return a jogdial state that is inverted with respect to the commands
required to set it (e.g. it intends to return 1 after the jogdial file was
written with 0).
This patch fixes both of those issues - the commands to query the
state now work, and should return the same state that was written.
http://bugzilla.kernel.org/show_bug.cgi?id=12286
Signed-off-by: Krzysztof Kosiński <tweenk.pl@gmail.com>
Acked-by: Carlos Corbacho <carlos@strangeworlds.co.uk>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/tc1100-wmi.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/platform/x86/tc1100-wmi.c b/drivers/platform/x86/tc1100-wmi.c index b4a4aa9ee482..44166003d4ef 100644 --- a/drivers/platform/x86/tc1100-wmi.c +++ b/drivers/platform/x86/tc1100-wmi.c @@ -94,9 +94,8 @@ static int get_state(u32 *out, u8 instance) return -ENODEV; obj = (union acpi_object *) result.pointer; - if (obj && obj->type == ACPI_TYPE_BUFFER && - obj->buffer.length == sizeof(u32)) { - tmp = *((u32 *) obj->buffer.pointer); + if (obj && obj->type == ACPI_TYPE_INTEGER) { + tmp = obj->integer.value; } else { tmp = 0; } @@ -109,7 +108,7 @@ static int get_state(u32 *out, u8 instance) *out = (tmp == 3) ? 1 : 0; return 0; case TC1100_INSTANCE_JOGDIAL: - *out = (tmp == 1) ? 1 : 0; + *out = (tmp == 1) ? 0 : 1; return 0; default: return -ENODEV; |