Re: linux-dvb Digest, Vol 36, Issue 80

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



---------- Missatge reenviat ----------
From: "Michael Krufky" < mkrufky@xxxxxxxxxxx>
To: "Ivor Hewitt" <ivor@xxxxxxxx>
Date: Mon, 21 Jan 2008 15:45:31 -0500
Subject: Re: [PATCH] allow dvb-usb firmware loading in warm state?
On Jan 21, 2008 3:19 PM, Ivor Hewitt <ivor@xxxxxxxx> wrote:
> Hi,
> I was having (still am! :) trouble with my nova-t 500 card and I wanted
> a way to be able try a different firmware... but the current code only
> loads in a cold state... and my "mythbackend" is pretty inaccessible, so
> I made the attached change. This allows a module parameter of
> "force_load_firmware" which causes the "cold state" logic to be used
> when warm. Thought this might be a useful idea, it was handy for me anyway.
>
> Cheers,
> Ivor
>
> -- snip --
>
>   /* DIB7070 generic */
> diff -r 7564c110491e linux/drivers/media/dvb/dvb-usb/dvb-usb-init.c
> --- a/linux/drivers/media/dvb/dvb-usb/dvb-usb-init.c    Sun Jan 20
> 09:13:44 2008 -0200
> +++ b/linux/drivers/media/dvb/dvb-usb/dvb-usb-init.c    Mon Jan 21
> 11:55:20 2008 +0000
> @@ -25,6 +25,10 @@ static int dvb_usb_force_pid_filter_usag
>   static int dvb_usb_force_pid_filter_usage;
>   module_param_named(force_pid_filter_usage,
> dvb_usb_force_pid_filter_usage, int, 0444);
>   MODULE_PARM_DESC(force_pid_filter_usage, "force all dvb-usb-devices to
> use a PID filter, if any (default: 0).");
> +
> +int dvb_usb_force_firmware;
> +module_param_named(force_load_firmware, dvb_usb_force_firmware, int, 0444);
> +MODULE_PARM_DESC(force_load_firmware, "force firmware loading even when
> in warm state.");
>
>   static int dvb_usb_adapter_init(struct dvb_usb_device *d)
>   {
> @@ -230,7 +234,7 @@ int dvb_usb_device_init(struct usb_inter
>                  return -ENODEV;
>          }
>
> -       if (cold) {
> +       if (cold||dvb_usb_force_firmware) {
>                  info("found a '%s' in cold state, will try to load a
> firmware",desc->name);
>                  ret = dvb_usb_download_firmware(udev,props);
>                  if (!props->no_reconnect || ret != 0)


Doesn't this cause an endless loop?  How does the driver know when to
stop uploading firmware?

-Mike

I think that code executes once only at driver initialisation phase. That means that now probably you'll be able to force a firmware reload by doing "rmmod dvb-usb-dib0700; modprobe dvb-usb-dib0700", which is pretty good IMHO. If so, that would solve a number of issues with this card that now require a full power-off cycle (a reboot isn't enough to make the card reload the firmware).

Please, correct me if I'm wrong...

Regards,
  Eduard


_______________________________________________
linux-dvb mailing list
linux-dvb@xxxxxxxxxxx
http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb

[Index of Archives]     [Linux Media]     [Video 4 Linux]     [Asterisk]     [Samba]     [Xorg]     [Xfree86]     [Linux USB]

  Powered by Linux