diff options
Diffstat (limited to 'drivers/input/serio')
| -rw-r--r-- | drivers/input/serio/i8042-x86ia64io.h | 7 | ||||
| -rw-r--r-- | drivers/input/serio/i8042.c | 12 |
2 files changed, 16 insertions, 3 deletions
diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h index 5be14ad..dbf0983 100644 --- a/drivers/input/serio/i8042-x86ia64io.h +++ b/drivers/input/serio/i8042-x86ia64io.h @@ -905,6 +905,13 @@ static const struct dmi_system_id __initconst i8042_dmi_kbdreset_table[] = { }, }, { + /* Gigabyte P57 - Elantech touchpad */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"), + DMI_MATCH(DMI_PRODUCT_NAME, "P57"), + }, + }, + { /* Schenker XMG C504 - Elantech touchpad */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "XMG"), diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c index 89abfdb..c84c685 100644 --- a/drivers/input/serio/i8042.c +++ b/drivers/input/serio/i8042.c @@ -434,8 +434,10 @@ static int i8042_start(struct serio *serio) { struct i8042_port *port = serio->port_data; + spin_lock_irq(&i8042_lock); port->exists = true; - mb(); + spin_unlock_irq(&i8042_lock); + return 0; } @@ -448,16 +450,20 @@ static void i8042_stop(struct serio *serio) { struct i8042_port *port = serio->port_data; + spin_lock_irq(&i8042_lock); port->exists = false; + port->serio = NULL; + spin_unlock_irq(&i8042_lock); /* + * We need to make sure that interrupt handler finishes using + * our serio port before we return from this function. * We synchronize with both AUX and KBD IRQs because there is * a (very unlikely) chance that AUX IRQ is raised for KBD port * and vice versa. */ synchronize_irq(I8042_AUX_IRQ); synchronize_irq(I8042_KBD_IRQ); - port->serio = NULL; } /* @@ -574,7 +580,7 @@ static irqreturn_t i8042_interrupt(int irq, void *dev_id) spin_unlock_irqrestore(&i8042_lock, flags); - if (likely(port->exists && !filtered)) + if (likely(serio && !filtered)) serio_interrupt(serio, data, dfl); out: |