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authorStefan Richter <stefanr@s5r6.in-berlin.de>2009-06-09 23:56:55 +0200
committerStefan Richter <stefanr@s5r6.in-berlin.de>2009-06-14 11:57:06 +0200
commit837ec787d85fda8d73193a399ebcea0288e4765b (patch)
tree813a25088e68dc734966ce5ed4aacada01084996 /include
parent099d54143e49d49c33cd25779ca725191df59b73 (diff)
firewire: core: don't update Broadcast_Channel if RFC 2734 conditions aren't met
This extra check will avoid Broadcast_Channel register related traffic to many IIDC, SBP-2, and AV/C devices which aren't IRMC or have a max_rec < 8 (i.e. support < 512 bytes async payload). This avoids a little bit of traffic after bus reset and is even more careful with devices which don't implement this CSR. The assumption is that no other protocol than IP over 1394 uses the broadcast channel for streams. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'include')
-rw-r--r--include/linux/firewire.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/firewire.h b/include/linux/firewire.h
index a69aea0394e..610eade8abb 100644
--- a/include/linux/firewire.h
+++ b/include/linux/firewire.h
@@ -191,7 +191,9 @@ struct fw_device {
size_t config_rom_length;
int config_rom_retries;
unsigned is_local:1;
+ unsigned max_rec:4;
unsigned cmc:1;
+ unsigned irmc:1;
unsigned bc_implemented:2;
struct delayed_work work;