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authorClemens Ladisch <clemens@ladisch.de>2010-06-10 10:40:49 +0400
committerClemens Ladisch <clemens@ladisch.de>2010-06-10 10:40:49 +0400
commite91b2787d0a2e4719b016e8dec0afd2d5ab6c30f (patch)
treee76a3665243ed9fb7275228d9a14dcb0eb5b567a /drivers/firewire/core.h
parent7e0e314f198d5048b74c8f0ef9f4c1c02e5ecfc9 (diff)
downloadlinux-e91b2787d0a2e4719b016e8dec0afd2d5ab6c30f.tar.xz
firewire: allocate broadcast channel in hardware
On OHCI 1.1 controllers, let the hardware allocate the broadcast channel automatically. This removes a theoretical race condition directly after a bus reset where it could be possible to read the channel allocation register with channel 31 still being unallocated. Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Diffstat (limited to 'drivers/firewire/core.h')
-rw-r--r--drivers/firewire/core.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/firewire/core.h b/drivers/firewire/core.h
index a9ace1f8dc3f..3f9e39b60bca 100644
--- a/drivers/firewire/core.h
+++ b/drivers/firewire/core.h
@@ -39,6 +39,7 @@ struct fw_packet;
#define BROADCAST_CHANNEL_VALID (1 << 30)
#define FEATURE_PRIORITY_BUDGET 0x01
+#define FEATURE_CHANNEL_31_ALLOCATED 0x02
#define CSR_STATE_BIT_CMSTR (1 << 8)
#define CSR_STATE_BIT_ABDICATE (1 << 10)