linux-kernel - Re: [PATCH 02/18] lirc serial port receiver/transmitter device driver

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Date:	Sun, 14 Sep 2008 23:55:38 -0400
From:	Jarod Wilson <jwilson@...hat.com>
To:	Stefan Bauer <stefan.bauer@...tu-chemnitz.de>
Cc:	Janne Grunau <j@...nau.net>, linux-kernel@...r.kernel.org,
	Christoph Bartelmus <lirc@...telmus.de>
Subject: Re: [PATCH 02/18] lirc serial port receiver/transmitter device driver

On Saturday 13 September 2008 04:41:33 Stefan Bauer wrote:
> On Saturday 13 September 2008 02:26, Janne Grunau wrote:
> > On Friday 12 September 2008 18:24:33 Jarod Wilson wrote:
> > > > I just want to thank you very much for your work and give you my
> > > > Tested-By. Todays git (b2e9c18a32423310a309f94ea5a659c4bb264378)
> > > > works well here with lirc-0.8.3 userspace on a Pentium
> > > > 3/i815-system.
> > >
> > > Oh good! I haven't broken anything further w/my changes up to
> > > b2e9c18... ;) I've got another slew of updates to lirc_serial still
> > > pending though
> >
> > I hope I haven't broken anything with my lirc_dev changes. I doubt I'll
> > have a change to test it before monday.
>
> Unfortunately, you did. Commit ea74897 (port lirc to dynamic device
> numbers) broke things.
> This is what ea74897 and further (latest tested was dd13cc7) are telling
> me:
>
> $ insmod drivers/input/lirc/lirc_dev.ko
> $ insmod drivers/input/lirc/lirc_serial.ko
> insmod: error inserting 'drivers/input/lirc/lirc_serial.ko': -1
> Input/output error
> $ dmesg | tail
> lirc_dev: IR Remote Control driver registered, major 253
> lirc_serial: auto-detected active low receiver
> lirc_dev: lirc_register_driver: sample_rate: 0
> lirc_serial: register_chrdev failed!
>
>
> There has also been a compile issue in the meanwhile, introduced with
> 95efa30 (inb/outb and readb/writeb deal in u8 types), but this is gone with
> todays git pull :)
>
>
> I'll keep on testing (unfortunately only at weekends),
> regards, Stefan

I'd hope to get around to some testing myself much earlier in the weekend, but 
alas... Did just mix in a quick peed at lirc_i2c though:

...
lirc_dev: IR Remote Control driver registered, major 247 
bttv: driver version 0.9.17 loaded
bttv: using 8 buffers with 2080k (520 pages) each for capture
cx88/0: cx2388x v4l2 driver version 0.0.6 loaded
lirc_i2c: chip 0x10020 found @ 0x18 (Hauppauge IR)
lirc_dev: lirc_register_driver: sample_rate: 10

No register_chrdev failure reported, everything looks the same as prior to the 
dynamic dev num change (save the dev num, of course), and I've got a 
/dev/lirc0, but I'm unable to see any IR signals (start up lircd, run irw, 
press buttons on remote).

...and I just took a quick look at lirc_i2c... The result from 
lirc_register_driver() is never checked, whereas it is in the lirc_serial case 
(which is where the register_chrdev error msg came from). Narf. So its likely 
the same failure, just not noticed (will fix lirc_i2c in a sec).

-- 
Jarod Wilson
jarod@...hat.com

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