diff options
| author | Kristian Høgsberg <krh@redhat.com> | 2007-03-14 17:34:55 -0400 |
|---|---|---|
| committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2007-03-15 18:21:36 +0100 |
| commit | 9472316b6eab3500ded544f6e86700c33541ef4e (patch) | |
| tree | f155121d72e4881793113ff1890fcc79f37a2c71 /drivers | |
| parent | eb0306eac0aad0b7da18d8fbfb777f155b2c010d (diff) | |
firewire: Implement deallocation of address ranges.
Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/firewire/fw-device-cdev.c | 28 | ||||
| -rw-r--r-- | drivers/firewire/fw-device-cdev.h | 17 |
2 files changed, 39 insertions, 6 deletions
diff --git a/drivers/firewire/fw-device-cdev.c b/drivers/firewire/fw-device-cdev.c index 175ea042ba3..ebf0d100805 100644 --- a/drivers/firewire/fw-device-cdev.c +++ b/drivers/firewire/fw-device-cdev.c @@ -467,6 +467,32 @@ static int ioctl_allocate(struct client *client, void __user *arg) return 0; } +static int ioctl_deallocate(struct client *client, void __user *arg) +{ + struct fw_cdev_deallocate request; + struct address_handler *handler; + unsigned long flags; + + if (copy_from_user(&request, arg, sizeof request)) + return -EFAULT; + + spin_lock_irqsave(&client->lock, flags); + list_for_each_entry(handler, &client->handler_list, link) { + if (handler->handler.offset == request.offset) { + list_del(&handler->link); + break; + } + } + spin_unlock_irqrestore(&client->lock, flags); + + if (&handler->link == &client->handler_list) + return -EINVAL; + + fw_core_remove_address_handler(&handler->handler); + + return 0; +} + static int ioctl_send_response(struct client *client, void __user *arg) { struct fw_cdev_send_response request; @@ -696,6 +722,8 @@ dispatch_ioctl(struct client *client, unsigned int cmd, void __user *arg) return ioctl_send_request(client, arg); case FW_CDEV_IOC_ALLOCATE: return ioctl_allocate(client, arg); + case FW_CDEV_IOC_DEALLOCATE: + return ioctl_deallocate(client, arg); case FW_CDEV_IOC_SEND_RESPONSE: return ioctl_send_response(client, arg); case FW_CDEV_IOC_INITIATE_BUS_RESET: diff --git a/drivers/firewire/fw-device-cdev.h b/drivers/firewire/fw-device-cdev.h index 3437a360d7d..10b83222db6 100644 --- a/drivers/firewire/fw-device-cdev.h +++ b/drivers/firewire/fw-device-cdev.h @@ -113,12 +113,13 @@ struct fw_cdev_event_iso_interrupt { #define FW_CDEV_IOC_GET_INFO _IO('#', 0x00) #define FW_CDEV_IOC_SEND_REQUEST _IO('#', 0x01) #define FW_CDEV_IOC_ALLOCATE _IO('#', 0x02) -#define FW_CDEV_IOC_SEND_RESPONSE _IO('#', 0x03) -#define FW_CDEV_IOC_INITIATE_BUS_RESET _IO('#', 0x04) -#define FW_CDEV_IOC_CREATE_ISO_CONTEXT _IO('#', 0x05) -#define FW_CDEV_IOC_QUEUE_ISO _IO('#', 0x06) -#define FW_CDEV_IOC_START_ISO _IO('#', 0x07) -#define FW_CDEV_IOC_STOP_ISO _IO('#', 0x08) +#define FW_CDEV_IOC_DEALLOCATE _IO('#', 0x03) +#define FW_CDEV_IOC_SEND_RESPONSE _IO('#', 0x04) +#define FW_CDEV_IOC_INITIATE_BUS_RESET _IO('#', 0x05) +#define FW_CDEV_IOC_CREATE_ISO_CONTEXT _IO('#', 0x06) +#define FW_CDEV_IOC_QUEUE_ISO _IO('#', 0x07) +#define FW_CDEV_IOC_START_ISO _IO('#', 0x08) +#define FW_CDEV_IOC_STOP_ISO _IO('#', 0x09) /* FW_CDEV_VERSION History * @@ -173,6 +174,10 @@ struct fw_cdev_allocate { __u32 length; }; +struct fw_cdev_deallocate { + __u64 offset; +}; + #define FW_CDEV_LONG_RESET 0 #define FW_CDEV_SHORT_RESET 1 |