On Thu, 30 Apr 2009, Mike Isely wrote:
> On Thu, 30 Apr 2009, Jean Delvare wrote:
>
> > The i2c core used to maintain a list of client for each adapter. This
> > is a duplication of what the driver core already does, so this list
> > will be removed as part of a future cleanup. Anyone using this list
> > must stop doing so.
> >
> > For pvrusb2, I propose the following change, which should lead to an
> > equally informative output. The only difference is that i2c clients
> > which are not a v4l2 subdev won't show up, but I guess this case is
> > not supposed to happen anyway.
>
> It will happen for anything i2c used by v4l which itself is not really a
> part of v4l. That would include, uh, lirc.
>
> I will review and test this first chance I get which should be tomorrow.
>
I've merged and tested this patch. It behaves as expected.
I'm putting together a bunch of pvrusb2 changesets right now anyway.
I've pulled this one into the collection, with appropriate attributions
of course.
-Mike
>
>
> >
> > Signed-off-by: Jean Delvare <kh...@linux-fr.org>
> > Cc: Mike Isely <is...@pobox.com>
> > ---
> > Mike, can you please review and test this patch? Thanks.
> >
> > linux/drivers/media/video/pvrusb2/pvrusb2-hdw.c | 56
> > +++++------------------
> > 1 file changed, 13 insertions(+), 43 deletions(-)
> >
> > --- v4l-dvb.orig/linux/drivers/media/video/pvrusb2/pvrusb2-hdw.c
> > 2009-04-30 16:52:32.000000000 +0200
> > +++ v4l-dvb/linux/drivers/media/video/pvrusb2/pvrusb2-hdw.c 2009-04-30
> > 17:20:37.000000000 +0200
> > @@ -4920,65 +4920,35 @@ static unsigned int pvr2_hdw_report_clie
> > unsigned int tcnt = 0;
> > unsigned int ccnt;
> > struct i2c_client *client;
> > - struct list_head *item;
> > - void *cd;
> > const char *p;
> > unsigned int id;
> >
> > - ccnt = scnprintf(buf, acnt, "Associated v4l2-subdev drivers:");
> > + ccnt = scnprintf(buf, acnt, "Associated v4l2-subdev drivers and I2C
> > clients:\n");
> > tcnt += ccnt;
> > v4l2_device_for_each_subdev(sd, &hdw->v4l2_dev) {
> > id = sd->grp_id;
> > p = NULL;
> > if (id < ARRAY_SIZE(module_names)) p = module_names[id];
> > if (p) {
> > - ccnt = scnprintf(buf + tcnt, acnt - tcnt, " %s", p);
> > + ccnt = scnprintf(buf + tcnt, acnt - tcnt, " %s:", p);
> > tcnt += ccnt;
> > } else {
> > ccnt = scnprintf(buf + tcnt, acnt - tcnt,
> > - " (unknown id=%u)", id);
> > + " (unknown id=%u):", id);
> > tcnt += ccnt;
> > }
> > - }
> > - ccnt = scnprintf(buf + tcnt, acnt - tcnt, "\n");
> > - tcnt += ccnt;
> > -
> > - ccnt = scnprintf(buf + tcnt, acnt - tcnt, "I2C clients:\n");
> > - tcnt += ccnt;
> > -
> > - mutex_lock(&hdw->i2c_adap.clist_lock);
> > - list_for_each(item, &hdw->i2c_adap.clients) {
> > - client = list_entry(item, struct i2c_client, list);
> > - ccnt = scnprintf(buf + tcnt, acnt - tcnt,
> > - " %s: i2c=%02x", client->name, client->addr);
> > - tcnt += ccnt;
> > - cd = i2c_get_clientdata(client);
> > - v4l2_device_for_each_subdev(sd, &hdw->v4l2_dev) {
> > - if (cd == sd) {
> > - id = sd->grp_id;
> > - p = NULL;
> > - if (id < ARRAY_SIZE(module_names)) {
> > - p = module_names[id];
> > - }
> > - if (p) {
> > - ccnt = scnprintf(buf + tcnt,
> > - acnt - tcnt,
> > - " subdev=%s", p);
> > - tcnt += ccnt;
> > - } else {
> > - ccnt = scnprintf(buf + tcnt,
> > - acnt - tcnt,
> > - " subdev= id %u)",
> > - id);
> > - tcnt += ccnt;
> > - }
> > - break;
> > - }
> > + client = v4l2_get_subdevdata(sd);
> > + if (client) {
> > + ccnt = scnprintf(buf + tcnt, acnt - tcnt,
> > + " %s @ %02x\n", client->name,
> > + client->addr);
> > + tcnt += ccnt;
> > + } else {
> > + ccnt = scnprintf(buf + tcnt, acnt - tcnt,
> > + " no i2c client\n");
> > + tcnt += ccnt;
> > }
> > - ccnt = scnprintf(buf + tcnt, acnt - tcnt, "\n");
> > - tcnt += ccnt;
> > }
> > - mutex_unlock(&hdw->i2c_adap.clist_lock);
> > return tcnt;
> > }
> >
> >
> >
> >
>
>
--
Mike Isely
isely @ isely (dot) net
PGP: 03 54 43 4D 75 E5 CC 92 71 16 01 E2 B5 F5 C1 E8
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