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firewire: move fw_device reference counting from drivers to core

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fw_unit device drivers invariably need to talk to the fw_unit's parent
(an fw_device) and grandparent (an fw_card).  firewire-core already
maintains an fw_card reference for the entire lifetime of an fw_device.
Likewise, let firewire-core maintain an fw_device reference for the
entire lifetime of an fw_unit so that fw_unit drivers don't have to.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Stefan Richter 2011-08-27 18:53:03 +02:00
parent 2ca526bf49
commit 2107622684
5 changed files with 16 additions and 19 deletions
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12
include/linux/firewire.h
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@ -203,18 +203,6 @@ static inline int fw_device_is_shutdown(struct fw_device *device)
return atomic_read(&device->state) == FW_DEVICE_SHUTDOWN;
}
static inline struct fw_device *fw_device_get(struct fw_device *device)
{
get_device(&device->device);
return device;
}
static inline void fw_device_put(struct fw_device *device)
{
put_device(&device->device);
}
int fw_device_enable_phys_dma(struct fw_device *device);
/*