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Input: serio - support multiple child devices per single parent

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Some (rare) serio devices need to have multiple serio children. One of
the examples is PS/2 multiplexer present on several TQC STKxxx boards,
which connect PS/2 keyboard and mouse to single tty port.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Dmitry Eremin-Solenikov
2010-10-04 21:46:10 -07:00
committed by Dmitry Torokhov
parent a8b3c0f57b
commit 0982258264
3 changed files with 86 additions and 46 deletions
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4
drivers/input/mouse/psmouse-base.c
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@@ -1584,10 +1584,10 @@ static ssize_t psmouse_attr_set_protocol(struct psmouse *psmouse, void *data, co
if (!new_dev)
return -ENOMEM;
while (serio->child) {
while (!list_empty(&serio->children)) {
if (++retry > 3) {
printk(KERN_WARNING
"psmouse: failed to destroy child port, "
"psmouse: failed to destroy children ports, "
"protocol change aborted.\n");
input_free_device(new_dev);
return -EIO;