Mark Lord wrote:
(resending.. somebody trimmed linux-kernel from the CC: earlier)
Jean Delvare wrote:
On Sun, 19 Jul 2009 10:38:37 -0400, Mark Lord wrote:
I'm debugging various other b0rked things in 2.6.31 here right now,
so I had a closer look at the Hauppauge I/R remote issue.
The ir_kbd_i2c driver *does* still find it after all.
But the difference is that the output from 'lsinput' has changed
and no longer says "Hauppauge". Which prevents the application from
finding the remote control in the same way as before.
OK, thanks for the investigation.
I'll hack the application code here now to use the new output,
but I wonder what the the thousands of other users will do when
they first try 2.6.31 after release ?
..
Mmm.. appears to be a systemwide thing, not just for the i2c stuff.
*All* of the input devices now no longer show their real names
when queried with ioctl(EVIOCGNAME). This is a regression from 2.6.30.
Note that the real names *are* still stored somewhere, because they
do still show up correctly under /sys/
Here's a test program for you:
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <linux/input.h>
// Invoke with "/dev/input/event4" as argv[1]
//
// On 2.6.30, this gives the real name, eg. "i2c IR (Hauppauge)".
// On 2.6.31, it simply gives "event4" as the "name".
int main(int argc, char *argv[])
{
char buf[32];
int fd, rc;
fd = open(argv[1], O_RDONLY);
if (fd == -1) {
perror(argv[1]);
exit(1);
}
rc = ioctl(fd,EVIOCGNAME(sizeof(buf)),buf);
if (rc >= 0)
fprintf(stderr," name : \"%.*s\"\n", rc, buf);
return 0;
}
..
Since this regression should be visible on *any* system, not just mine,
I think perhaps the input-subsystem developers ought to be the ones to
go and burn some time on a git-bisect, if need be.
Eg. Here's what's different on my notebook here:
--- lsinput.2.6.30 2009-07-19 15:14:38.278293568 -0400
+++ lsinput.2.6.31 2009-07-19 15:15:43.725375340 -0400
@@ -3,7 +3,7 @@
vendor : 0x1
product : 0x1
version : 43841
- name : "AT Translated Set 2 keyboard"
+ name : "event0"
phys : "isa0060/serio0/input0"
bits ev : EV_SYN EV_KEY EV_MSC EV_LED EV_REP
@@ -12,7 +12,7 @@
vendor : 0x2
product : 0x7
version : 4017
- name : "SynPS/2 Synaptics TouchPad"
+ name : "event1"
phys : "isa0060/serio1/input0"
bits ev : EV_SYN EV_KEY EV_ABS
@@ -21,7 +21,7 @@
vendor : 0x0
product : 0x5
version : 0
- name : "Lid Switch"
+ name : "event2"
phys : "PNP0C0D/button/input0"
bits ev : EV_SYN EV_SW
@@ -30,7 +30,7 @@
vendor : 0x0
product : 0x1
version : 0
- name : "Power Button"
+ name : "event3"
phys : "PNP0C0C/button/input0"
bits ev : EV_SYN EV_KEY
@@ -39,7 +39,7 @@
vendor : 0x0
product : 0x3
version : 0
- name : "Sleep Button"
+ name : "event4"
phys : "PNP0C0E/button/input0"
bits ev : EV_SYN EV_KEY
@@ -48,34 +48,16 @@
vendor : 0x1f
product : 0x1
version : 256
- name : "PC Speaker"
+ name : "event5"
phys : "isa0061/input0"
bits ev : EV_SYN EV_SND
/dev/input/event6
- bustype : (null)
- vendor : 0x0
- product : 0x0
- version : 0
- name : "HDA Intel Mic at Ext Right Jack"
- phys : "ALSA"
- bits ev : EV_SYN EV_SW
-
-/dev/input/event7
- bustype : (null)
- vendor : 0x0
- product : 0x0
- version : 0
- name : "HDA Intel HP Out at Ext Right Ja"
- phys : "ALSA"
- bits ev : EV_SYN EV_SW
-
-/dev/input/event8
bustype : BUS_USB
vendor : 0x46d
product : 0xc016
version : 272
- name : "Logitech Optical USB Mouse"
+ name : "event6"
phys : "usb-0000:00:1d.7-5.4/input0"
uniq : ""
bits ev : EV_SYN EV_KEY EV_REL EV_MSC
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