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| author | Mike Isely <isely@pobox.com> | 2009-03-07 05:57:25 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-03-30 17:43:38 +0200 |
| commit | 27764726a8fa72a7e8a7cdccbe9e4425747a96fa (patch) | |
| tree | 86415f280dd8423781d17ce723e245cfaa2b60fb /drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h | |
| parent | V4L/DVB (11193): pvrusb2: Correct some trace print inaccuracies (diff) | |
| download | linux-27764726a8fa72a7e8a7cdccbe9e4425747a96fa.tar.xz linux-27764726a8fa72a7e8a7cdccbe9e4425747a96fa.zip | |
V4L/DVB (11194): pvrusb2: Implement mechanism to force a full sub-device update
When a pvrusb2 driver instance first initializes, we need to be sure
to send out a complete state update for everything to all attached
modules. The old i2c layer did this by keeping a separate mask of
"stale" bits for each attached module - and setting that mask to all
stale when that module attaches. But the new sub-device adaptation
I've implemented here no longer has per-module stale bits. So instead
there's now a global "force dirty" bit that is set upon instance
initialization, before the sub-devices are attached. After the first
update, this bit is cleared, allowing for normal update-on-dirty
behavior. In this manner, we ensure that all sub-devices have been
properly synchronized at initialization.
Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h')
| -rw-r--r-- | drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h b/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h index 299bf58ad77a..2afbd9bcedd3 100644 --- a/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h +++ b/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h @@ -288,6 +288,7 @@ struct pvr2_hdw { wait_queue_head_t state_wait_data; + int force_dirty; /* consider all controls dirty if true */ int flag_ok; /* device in known good state */ int flag_disconnected; /* flag_ok == 0 due to disconnect */ int flag_init_ok; /* true if structure is fully initialized */ |