Hi,
I've been trying to get my wacom tablet PC working with the new udev
backend. The digitizer is connected via a serial port and shows up as
/dev/ttyS0. I tried the following udev rules (this is based on an older
version of the udev patches that debian and ubuntu ship, I haven't fully
comprehended yet how the driver is specified on git master)
ACTION=="add|change", SUBSYSTEM=="pnp", ATTR{id}=="WACf*",
ENV{NAME}="Serial Wacom Tablet"
ACTION=="add|change", SUBSYSTEMS=="pnp", ATTRS{id}=="WACf*",
ENV{x11_driver}="wacom"
This almost works, except that the current udev code only considers
devices whose subsystem in "input", but the subsystem of /dev/ttyS0 is
"tty". The attached patch drops this requirement. Is this the correct
way to re-enable support for serial input devices?
Thanks,
Tom
>From e72ebdc6887441ccfae738001995ef686d3496f8 Mon Sep 17 00:00:00 2001
From: Thomas Jaeger <thjae...@gmail.com>
Date: Mon, 4 Jan 2010 15:00:49 -0500
Subject: [PATCH] udev: Don't filter subsystem "input"
This allows serial wacom devices to work, whose subsystem is "tty".
---
config/udev.c | 6 ------
1 files changed, 0 insertions(+), 6 deletions(-)
diff --git a/config/udev.c b/config/udev.c
index 3ef0d7f..d73bef5 100644
--- a/config/udev.c
+++ b/config/udev.c
@@ -204,7 +204,6 @@ config_udev_init(void)
struct udev *udev;
struct udev_enumerate *enumerate;
struct udev_list_entry *devices, *device;
- int rc;
udev = udev_new();
if (!udev)
@@ -212,10 +211,6 @@ config_udev_init(void)
udev_monitor = udev_monitor_new_from_netlink(udev, "udev");
if (!udev_monitor)
return 0;
- rc = udev_monitor_filter_add_match_subsystem_devtype(udev_monitor,
- "input", NULL);
- if (rc < 0)
- return 0;
if (udev_monitor_enable_receiving(udev_monitor)) {
ErrorF("config/udev: failed to bind the udev monitor\n");
@@ -225,7 +220,6 @@ config_udev_init(void)
enumerate = udev_enumerate_new(udev);
if (!enumerate)
return 0;
- udev_enumerate_add_match_subsystem(enumerate, "input");
udev_enumerate_scan_devices(enumerate);
devices = udev_enumerate_get_list_entry(enumerate);
udev_list_entry_foreach(device, devices) {
--
1.6.3.3
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