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| author | jhb <jhb@FreeBSD.org> | 2012-04-11 20:57:41 +0000 |
|---|---|---|
| committer | jhb <jhb@FreeBSD.org> | 2012-04-11 20:57:41 +0000 |
| commit | 294ae9574dbae2eb396badbd71d53759f665a50e (patch) | |
| tree | 01fe2ebbcc44439ae8b4b463d26d707df4166b48 /sys/sys/bus.h | |
| parent | 31bc0a8bff2a66718684b68012fa4be1ed30f522 (diff) | |
| download | FreeBSD-src-294ae9574dbae2eb396badbd71d53759f665a50e.zip FreeBSD-src-294ae9574dbae2eb396badbd71d53759f665a50e.tar.gz | |
Allow device_busy() and device_unbusy() to be invoked while a device is
being attached. This is implemented by adding a new DS_ATTACHING state
while a device's DEVICE_ATTACH() method is being invoked. A driver is
required to not fail an attach of a busy device. The device's state will
be promoted to DS_BUSY rather than DS_ACTIVE() if the device was marked
busy during DEVICE_ATTACH().
Reviewed by: kib
MFC after: 1 week
Diffstat (limited to 'sys/sys/bus.h')
| -rw-r--r-- | sys/sys/bus.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/sys/bus.h b/sys/sys/bus.h index 1c16bd6..fff745c 100644 --- a/sys/sys/bus.h +++ b/sys/sys/bus.h @@ -52,6 +52,7 @@ struct u_businfo { typedef enum device_state { DS_NOTPRESENT = 10, /**< @brief not probed or probe failed */ DS_ALIVE = 20, /**< @brief probe succeeded */ + DS_ATTACHING = 25, /**< @brief currently attaching */ DS_ATTACHED = 30, /**< @brief attach method called */ DS_BUSY = 40 /**< @brief device is open */ } device_state_t; |
