From: Thomas Renninger This patch works back to 2.6.17 (earlier kernels seem to need up/down operations on mutex/semaphore). psmouse - properly reset mouse on shutdown/suspend Some people report that they need psmouse module unloaded for suspend to ram/disk to work properly. Let's make port cleanup behave the same way as driver unload. This fixes "bad state" problem on various HP laptops, such as nx7400. Signed-off-by: Dmitry Torokhov Signed-off-by: Thomas Renninger Signed-off-by: Greg Kroah-Hartman --- drivers/input/mouse/psmouse-base.c | 28 ++++++++++++++++++++++++++++ drivers/input/mouse/psmouse.h | 1 + drivers/input/mouse/synaptics.c | 1 + 3 files changed, 30 insertions(+) --- linux-2.6.20.1.orig/drivers/input/mouse/psmouse-base.c +++ linux-2.6.20.1/drivers/input/mouse/psmouse-base.c @@ -987,8 +987,36 @@ static void psmouse_resync(struct work_s static void psmouse_cleanup(struct serio *serio) { struct psmouse *psmouse = serio_get_drvdata(serio); + struct psmouse *parent = NULL; + + mutex_lock(&psmouse_mutex); + + if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { + parent = serio_get_drvdata(serio->parent); + psmouse_deactivate(parent); + } + + psmouse_deactivate(psmouse); + + if (psmouse->cleanup) + psmouse->cleanup(psmouse); psmouse_reset(psmouse); + +/* + * Some boxes, such as HP nx7400, get terribly confused if mouse + * is not fully enabled before suspending/shutting down. + */ + ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE); + + if (parent) { + if (parent->pt_deactivate) + parent->pt_deactivate(parent); + + psmouse_activate(parent); + } + + mutex_unlock(&psmouse_mutex); } /* --- linux-2.6.20.1.orig/drivers/input/mouse/psmouse.h +++ linux-2.6.20.1/drivers/input/mouse/psmouse.h @@ -68,6 +68,7 @@ struct psmouse { int (*reconnect)(struct psmouse *psmouse); void (*disconnect)(struct psmouse *psmouse); + void (*cleanup)(struct psmouse *psmouse); int (*poll)(struct psmouse *psmouse); void (*pt_activate)(struct psmouse *psmouse); --- linux-2.6.20.1.orig/drivers/input/mouse/synaptics.c +++ linux-2.6.20.1/drivers/input/mouse/synaptics.c @@ -652,6 +652,7 @@ int synaptics_init(struct psmouse *psmou psmouse->set_rate = synaptics_set_rate; psmouse->disconnect = synaptics_disconnect; psmouse->reconnect = synaptics_reconnect; + psmouse->cleanup = synaptics_reset; psmouse->pktsize = 6; /* Synaptics can usually stay in sync without extra help */ psmouse->resync_time = 0; -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/