V4L/DVB (11165): pvrusb2: Tie in debug register access to sub-devices

Implement tie-in for v4l2 debug register access such that the
appropriate attached sub-device is handled.

Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw.c b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
index 9669d6a4fb9e2cede16c98a2ef7d4967ec6b1d81..4e50e7bc57453921fee8b64bc39e4f1c88664ce6 100644 (file)
--- a/drivers/media/video/pvrusb2/pvrusb2-hdw.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
@@ -4925,7 +4925,10 @@ int pvr2_hdw_register_access(struct pvr2_hdw *hdw,
        req.match = *match;
        req.reg = reg_id;
        if (setFl) req.val = *val_ptr;
-       mutex_lock(&hdw->i2c_list_lock); do {
+       /* It would be nice to know if a sub-device answered the request */
+       v4l2_device_call_all(&hdw->v4l2_dev, 0, core, g_register, &req);
+       if (!setFl) *val_ptr = req.val;
+       if (!okFl) mutex_lock(&hdw->i2c_list_lock); do {
                list_for_each_entry(cp, &hdw->i2c_clients, list) {
                        if (!v4l2_chip_match_i2c_client(
                                    cp->client,