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| author | Henrique de Moraes Holschuh <hmh@hmh.eng.br> | 2007-04-21 11:08:34 -0300 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2007-04-21 23:30:34 -0400 |
| commit | 0dcef77c5b889338811d35e786b42046259fe433 (patch) | |
| tree | 05c66f57eb7b3b73a81d3503a71f7b01a96d4f51 /drivers/misc | |
| parent | a5763f2223ce3fdbc75923f8c948fc7b59ed2f96 (diff) | |
| download | linux-0dcef77c5b889338811d35e786b42046259fe433.tar.gz linux-0dcef77c5b889338811d35e786b42046259fe433.tar.bz2 linux-0dcef77c5b889338811d35e786b42046259fe433.zip | |
ACPI: thinkpad-acpi: improve thinkpad detection
Improve the detection of ThinkPads, so as to reduce the chances of false
positives.
Since this could potentially add false negatives on the very old models,
add a module parameter to force the detection of a thinkpad.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/thinkpad_acpi.c | 13 | ||||
| -rw-r--r-- | drivers/misc/thinkpad_acpi.h | 1 |
2 files changed, 14 insertions, 0 deletions
diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c index 56112684967b..cddf81bb2d97 100644 --- a/drivers/misc/thinkpad_acpi.c +++ b/drivers/misc/thinkpad_acpi.c @@ -2881,6 +2881,16 @@ static int __init probe_for_thinkpad(void) return -ENODEV; } + /* + * Risks a regression on very old machines, but reduces potential + * false positives a damn great deal + */ + if (!is_thinkpad) + is_thinkpad = dmi_name_in_vendors("IBM"); + + if (!is_thinkpad && !force_load) + return -ENODEV; + return 0; } @@ -2986,6 +2996,9 @@ module_param(experimental, int, 0); static u32 dbg_level; module_param_named(debug, dbg_level, uint, 0); +static int force_load; +module_param(force_load, int, 0); + #define IBM_PARAM(feature) \ module_param_call(feature, set_ibm_param, NULL, NULL, 0) diff --git a/drivers/misc/thinkpad_acpi.h b/drivers/misc/thinkpad_acpi.h index 97467b71b727..20203981cb7a 100644 --- a/drivers/misc/thinkpad_acpi.h +++ b/drivers/misc/thinkpad_acpi.h @@ -128,6 +128,7 @@ static char *next_cmd(char **cmds); /* Module */ static int experimental; static u32 dbg_level; +static int force_load; static char *ibm_thinkpad_ec_found; static char* check_dmi_for_ec(void); |