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| author | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2010-06-21 23:24:35 +0200 |
|---|---|---|
| committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2010-07-08 16:52:02 +0200 |
| commit | 250b2b6dd421c9f8844a867d2ac06e0661e0ad93 (patch) | |
| tree | b86719d2c442676a52c6307471c9e278b1bd21f5 /include/linux/firewire-cdev.h | |
| parent | ae948011071c12ff6a328348859c717ea885ed40 (diff) | |
firewire: cdev: fix fw_cdev_event_bus_reset.bm_node_id
Fix an obscure ABI feature that is a bit of a hassle to implement.
However, somebody put it into the ABI, so let's fill in a sensible
value there.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'include/linux/firewire-cdev.h')
| -rw-r--r-- | include/linux/firewire-cdev.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/firewire-cdev.h b/include/linux/firewire-cdev.h index 8b9b27373219..d31022b05bd9 100644 --- a/include/linux/firewire-cdev.h +++ b/include/linux/firewire-cdev.h @@ -66,6 +66,10 @@ struct fw_cdev_event_common { * This event is sent when the bus the device belongs to goes through a bus * reset. It provides information about the new bus configuration, such as * new node ID for this device, new root ID, and others. + * + * If @bm_node_id is 0xffff right after bus reset it can be reread by an + * %FW_CDEV_IOC_GET_INFO ioctl after bus manager selection was finished. + * Kernels with ABI version < 4 do not set @bm_node_id. */ struct fw_cdev_event_bus_reset { __u64 closure; @@ -348,6 +352,7 @@ union fw_cdev_event { * 3 (2.6.34) - made &fw_cdev_get_cycle_timer reliable * - added %FW_CDEV_IOC_GET_CYCLE_TIMER2 * 4 (2.6.36) - added %FW_CDEV_EVENT_REQUEST2 + * - implemented &fw_cdev_event_bus_reset.bm_node_id */ #define FW_CDEV_VERSION 3 /* Meaningless; don't use this macro. */ |