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Subject[PATCH 41/44] Don't ignore PS/2 data immediately after disconnect
Date
From
You can pull this changeset from:
bk://kernel.bkbits.net/vojtech/input

===================================================================

ChangeSet@1.1608.54.10, 2004-03-11 02:16:51-05:00, dtor_core@ameritech.net
Input: when disconnecting PS/2 mouse give protocol's disconnect
handler chance to run before starting ignoring mouse data.
Otherwise interrupt handler will discard all ACKs and the
very first command in cleanup sequence will fail (Synaptics
was failing to return to relative mode on module unload).


psmouse-base.c | 8 +++++---
psmouse.h | 4 ++--
2 files changed, 7 insertions(+), 5 deletions(-)

===================================================================

diff -Nru a/drivers/input/mouse/psmouse-base.c b/drivers/input/mouse/psmouse-base.c
--- a/drivers/input/mouse/psmouse-base.c Tue Mar 16 13:17:34 2004
+++ b/drivers/input/mouse/psmouse-base.c Tue Mar 16 13:17:34 2004
@@ -552,7 +552,7 @@
{
struct psmouse *psmouse = serio->private;

- psmouse->state = PSMOUSE_IGNORE;
+ psmouse->state = PSMOUSE_CMD_MODE;

if (psmouse->ptport) {
if (psmouse->ptport->deactivate)
@@ -565,6 +565,8 @@
if (psmouse->disconnect)
psmouse->disconnect(psmouse);

+ psmouse->state = PSMOUSE_IGNORE;
+
input_unregister_device(&psmouse->dev);
serio_close(serio);
kfree(psmouse);
@@ -592,7 +594,7 @@
psmouse->dev.keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
psmouse->dev.relbit[0] = BIT(REL_X) | BIT(REL_Y);

- psmouse->state = PSMOUSE_NEW_DEVICE;
+ psmouse->state = PSMOUSE_CMD_MODE;
psmouse->serio = serio;
psmouse->dev.private = psmouse;

@@ -650,7 +652,7 @@
return -1;
}

- psmouse->state = PSMOUSE_NEW_DEVICE;
+ psmouse->state = PSMOUSE_CMD_MODE;
psmouse->type = psmouse->acking = psmouse->cmdcnt = psmouse->pktcnt = 0;
if (psmouse->reconnect) {
if (psmouse->reconnect(psmouse))
diff -Nru a/drivers/input/mouse/psmouse.h b/drivers/input/mouse/psmouse.h
--- a/drivers/input/mouse/psmouse.h Tue Mar 16 13:17:34 2004
+++ b/drivers/input/mouse/psmouse.h Tue Mar 16 13:17:34 2004
@@ -5,7 +5,7 @@
#define PSMOUSE_CMD_SETRES 0x10e8
#define PSMOUSE_CMD_GETINFO 0x03e9
#define PSMOUSE_CMD_SETSTREAM 0x00ea
-#define PSMOUSE_CMD_POLL 0x03eb
+#define PSMOUSE_CMD_POLL 0x03eb
#define PSMOUSE_CMD_GETID 0x02f2
#define PSMOUSE_CMD_SETRATE 0x10f3
#define PSMOUSE_CMD_ENABLE 0x00f4
@@ -18,7 +18,7 @@
#define PSMOUSE_RET_NAK 0xfe

/* psmouse states */
-#define PSMOUSE_NEW_DEVICE 0
+#define PSMOUSE_CMD_MODE 0
#define PSMOUSE_ACTIVATED 1
#define PSMOUSE_IGNORE 2

-
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