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.
-Mike
>
> Signed-off-by: Jean Delvare <khali@xxxxxxxxxxxx>
> Cc: Mike Isely <isely@xxxxxxxxx>
> ---
> 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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