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| author | YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> | 2013-03-08 02:42:26 +0100 |
|---|---|---|
| committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2013-03-13 16:11:10 +0100 |
| commit | 9d39c90abc6766f875d2855a1a73c43b6ffa09c0 (patch) | |
| tree | 16b6372ea074cc53d33e2b7f92ea6f9837c9f71f | |
| parent | firewire net: No need to reset dev->local_fifo after failure of fw_core_add_a... (diff) | |
| download | linux-9d39c90abc6766f875d2855a1a73c43b6ffa09c0.tar.xz linux-9d39c90abc6766f875d2855a1a73c43b6ffa09c0.zip | |
firewire net: Introduce fwnet_fifo_{start, stop}() helpers.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| -rw-r--r-- | drivers/firewire/net.c | 51 |
1 files changed, 35 insertions, 16 deletions
diff --git a/drivers/firewire/net.c b/drivers/firewire/net.c index a7a0e8277147..96f6ee5bffd4 100644 --- a/drivers/firewire/net.c +++ b/drivers/firewire/net.c @@ -1116,6 +1116,36 @@ static int fwnet_send_packet(struct fwnet_packet_task *ptask) return 0; } +static void fwnet_fifo_stop(struct fwnet_device *dev) +{ + if (dev->local_fifo == FWNET_NO_FIFO_ADDR) + return; + + fw_core_remove_address_handler(&dev->handler); + dev->local_fifo = FWNET_NO_FIFO_ADDR; +} + +static int fwnet_fifo_start(struct fwnet_device *dev) +{ + int retval; + + if (dev->local_fifo != FWNET_NO_FIFO_ADDR) + return 0; + + dev->handler.length = 4096; + dev->handler.address_callback = fwnet_receive_packet; + dev->handler.callback_data = dev; + + retval = fw_core_add_address_handler(&dev->handler, + &fw_high_memory_region); + if (retval < 0) + return retval; + + dev->local_fifo = dev->handler.offset; + + return 0; +} + static int fwnet_broadcast_start(struct fwnet_device *dev) { struct fw_iso_context *context; @@ -1126,18 +1156,9 @@ static int fwnet_broadcast_start(struct fwnet_device *dev) unsigned long offset; unsigned u; - if (dev->local_fifo == FWNET_NO_FIFO_ADDR) { - dev->handler.length = 4096; - dev->handler.address_callback = fwnet_receive_packet; - dev->handler.callback_data = dev; - - retval = fw_core_add_address_handler(&dev->handler, - &fw_high_memory_region); - if (retval < 0) - goto failed_initial; - - dev->local_fifo = dev->handler.offset; - } + retval = fwnet_fifo_start(dev); + if (retval < 0) + goto failed_initial; max_receive = 1U << (dev->card->max_receive + 1); num_packets = (FWNET_ISO_PAGE_COUNT * PAGE_SIZE) / max_receive; @@ -1219,8 +1240,7 @@ static int fwnet_broadcast_start(struct fwnet_device *dev) fw_iso_context_destroy(context); dev->broadcast_rcv_context = NULL; failed_context_create: - fw_core_remove_address_handler(&dev->handler); - dev->local_fifo = FWNET_NO_FIFO_ADDR; + fwnet_fifo_stop(dev); failed_initial: return retval; @@ -1600,8 +1620,7 @@ static int fwnet_remove(struct device *_dev) if (list_empty(&dev->peer_list)) { unregister_netdev(net); - if (dev->local_fifo != FWNET_NO_FIFO_ADDR) - fw_core_remove_address_handler(&dev->handler); + fwnet_fifo_stop(dev); if (dev->broadcast_rcv_context) { fw_iso_context_stop(dev->broadcast_rcv_context); fw_iso_buffer_destroy(&dev->broadcast_rcv_buffer, |