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authorStefan Richter <stefanr@s5r6.in-berlin.de>2007-06-18 19:44:12 +0200
committerStefan Richter <stefanr@s5r6.in-berlin.de>2007-07-10 00:07:43 +0200
commit24d40125f1f59a6de9d9e6e046676bd60532596c (patch)
tree312fb396c7b5987313ce20ca033947faf54a273c /drivers/firewire/fw-card.c
parent25d83f583b334ac671fbb905c97c374ba34a597a (diff)
downloadblackbird-op-linux-24d40125f1f59a6de9d9e6e046676bd60532596c.tar.gz
blackbird-op-linux-24d40125f1f59a6de9d9e6e046676bd60532596c.zip
firewire: optimize gap count with 1394b leaf nodes
Table-based gap count optimization cannot be used if 1394b repeater PHYs are present. But it does work with 1394b leaf nodes. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Diffstat (limited to 'drivers/firewire/fw-card.c')
-rw-r--r--drivers/firewire/fw-card.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/firewire/fw-card.c b/drivers/firewire/fw-card.c
index 9eb1edacd825..0aeab3218bb6 100644
--- a/drivers/firewire/fw-card.c
+++ b/drivers/firewire/fw-card.c
@@ -336,8 +336,11 @@ fw_card_bm_work(struct work_struct *work)
}
pick_me:
- /* Now figure out what gap count to set. */
- if (card->topology_type == FW_TOPOLOGY_A &&
+ /*
+ * Pick a gap count from 1394a table E-1. The table doesn't cover
+ * the typically much larger 1394b beta repeater delays though.
+ */
+ if (!card->beta_repeaters_present &&
card->root_node->max_hops < ARRAY_SIZE(gap_count_table))
gap_count = gap_count_table[card->root_node->max_hops];
else
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