diff options
| author | Jiri Kosina <jkosina@suse.cz> | 2011-01-08 12:37:26 +0300 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2011-01-08 12:38:11 +0300 |
| commit | f8313ef1f448006207f12c107123522c8bc00f15 (patch) | |
| tree | 67149c0397df522d0906eddd6dd96373c7dad127 | |
| parent | 93f38e914183c9b7af248fab793153772996987c (diff) | |
| download | linux-f8313ef1f448006207f12c107123522c8bc00f15.tar.xz | |
Input: i8042 - introduce 'notimeout' blacklist for Dell Vostro V13
i8042 controller present in Dell Vostro V13 errorneously signals spurious
timeouts.
Introduce i8042.notimeout parameter for ignoring i8042-signalled timeouts
and apply this quirk automatically for Dell Vostro V13, based on DMI match.
In addition to that, this machine also needs to be added to nomux blacklist.
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
| -rw-r--r-- | Documentation/kernel-parameters.txt | 1 | ||||
| -rw-r--r-- | drivers/input/serio/i8042-x86ia64io.h | 21 | ||||
| -rw-r--r-- | drivers/input/serio/i8042.c | 6 |
3 files changed, 27 insertions, 1 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index ed45e9802aa8..185b6bf0fb85 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -884,6 +884,7 @@ and is between 256 and 4096 characters. It is defined in the file controller i8042.nopnp [HW] Don't use ACPIPnP / PnPBIOS to discover KBD/AUX controllers + i8042.notimeout [HW] Ignore timeout condition signalled by conroller i8042.reset [HW] Reset the controller during init and cleanup i8042.unlock [HW] Unlock (ignore) the keylock diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h index 5ae0fc4578fe..bb9f5d31f0d0 100644 --- a/drivers/input/serio/i8042-x86ia64io.h +++ b/drivers/input/serio/i8042-x86ia64io.h @@ -424,6 +424,13 @@ static const struct dmi_system_id __initconst i8042_dmi_nomux_table[] = { DMI_MATCH(DMI_PRODUCT_VERSION, "0100"), }, }, + { + /* Dell Vostro V13 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V13"), + }, + }, { } }; @@ -545,6 +552,17 @@ static const struct dmi_system_id __initconst i8042_dmi_laptop_table[] = { }; #endif +static const struct dmi_system_id __initconst i8042_dmi_notimeout_table[] = { + { + /* Dell Vostro V13 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V13"), + }, + }, + { } +}; + /* * Some Wistron based laptops need us to explicitly enable the 'Dritek * keyboard extension' to make their extra keys start generating scancodes. @@ -896,6 +914,9 @@ static int __init i8042_platform_init(void) if (dmi_check_system(i8042_dmi_nomux_table)) i8042_nomux = true; + if (dmi_check_system(i8042_dmi_notimeout_table)) + i8042_notimeout = true; + if (dmi_check_system(i8042_dmi_dritek_table)) i8042_dritek = true; #endif /* CONFIG_X86 */ diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c index c04ff00a3663..ac4c93689ab9 100644 --- a/drivers/input/serio/i8042.c +++ b/drivers/input/serio/i8042.c @@ -63,6 +63,10 @@ static bool i8042_noloop; module_param_named(noloop, i8042_noloop, bool, 0); MODULE_PARM_DESC(noloop, "Disable the AUX Loopback command while probing for the AUX port"); +static bool i8042_notimeout; +module_param_named(notimeout, i8042_notimeout, bool, 0); +MODULE_PARM_DESC(notimeout, "Ignore timeouts signalled by i8042"); + #ifdef CONFIG_X86 static bool i8042_dritek; module_param_named(dritek, i8042_dritek, bool, 0); @@ -504,7 +508,7 @@ static irqreturn_t i8042_interrupt(int irq, void *dev_id) } else { dfl = ((str & I8042_STR_PARITY) ? SERIO_PARITY : 0) | - ((str & I8042_STR_TIMEOUT) ? SERIO_TIMEOUT : 0); + ((str & I8042_STR_TIMEOUT && !i8042_notimeout) ? SERIO_TIMEOUT : 0); port_no = (str & I8042_STR_AUXDATA) ? I8042_AUX_PORT_NO : I8042_KBD_PORT_NO; |