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authorYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>2013-03-08 10:42:26 +0900
committerStefan Richter <stefanr@s5r6.in-berlin.de>2013-03-13 16:11:10 +0100
commit9d39c90abc6766f875d2855a1a73c43b6ffa09c0 (patch)
tree16b6372ea074cc53d33e2b7f92ea6f9837c9f71f /drivers/firewire
parent5104a03d7d0ef4b0222155f2fa6902bf727b1005 (diff)
downloadlinux-linaro-stable-9d39c90abc6766f875d2855a1a73c43b6ffa09c0.tar.gz
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>
Diffstat (limited to 'drivers/firewire')
-rw-r--r--drivers/firewire/net.c51
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,