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.
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;
}
--
Jean Delvare
--
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