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authorMike Isely <isely@pobox.com>2009-03-07 01:57:25 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-03-30 12:43:38 -0300
commit27764726a8fa72a7e8a7cdccbe9e4425747a96fa (patch)
tree86415f280dd8423781d17ce723e245cfaa2b60fb /drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h
parent5e430ca5d25e99f99c055bc43f8f140722a643b8 (diff)
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.h1
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 */

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