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authorYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>2013-03-07 20:43:25 -0500
committerStefan Richter <stefanr@s5r6.in-berlin.de>2013-03-13 11:11:11 -0400
commitf2090594dd28c033e0a9a267240ffca6d5afbd84 (patch)
tree779f4ed97ff7f574806418e10f8c6366831ccafa /drivers/firewire/net.c
parentf60bac4bc9f8c6b20b27a2be210a69e2f256f0a5 (diff)
firewire net: Omit checking dev->broadcast_rcv_context in fwnet_broadcast_start().
dev->broadcast_rcv_context is always non-NULL if dev->broadcast_state is not FWNET_BROADCAST_ERROR. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'drivers/firewire/net.c')
-rw-r--r--drivers/firewire/net.c57
1 files changed, 26 insertions, 31 deletions
diff --git a/drivers/firewire/net.c b/drivers/firewire/net.c
index efed4a65fb06..d8cb6ac31044 100644
--- a/drivers/firewire/net.c
+++ b/drivers/firewire/net.c
@@ -1154,6 +1154,7 @@ static int fwnet_broadcast_start(struct fwnet_device *dev)
1154 unsigned max_receive; 1154 unsigned max_receive;
1155 struct fw_iso_packet packet; 1155 struct fw_iso_packet packet;
1156 unsigned long offset; 1156 unsigned long offset;
1157 void **ptrptr;
1157 unsigned u; 1158 unsigned u;
1158 1159
1159 if (dev->broadcast_state != FWNET_BROADCAST_ERROR) 1160 if (dev->broadcast_state != FWNET_BROADCAST_ERROR)
@@ -1162,42 +1163,36 @@ static int fwnet_broadcast_start(struct fwnet_device *dev)
1162 max_receive = 1U << (dev->card->max_receive + 1); 1163 max_receive = 1U << (dev->card->max_receive + 1);
1163 num_packets = (FWNET_ISO_PAGE_COUNT * PAGE_SIZE) / max_receive; 1164 num_packets = (FWNET_ISO_PAGE_COUNT * PAGE_SIZE) / max_receive;
1164 1165
1165 if (!dev->broadcast_rcv_context) { 1166 context = fw_iso_context_create(dev->card, FW_ISO_CONTEXT_RECEIVE,
1166 void **ptrptr; 1167 IEEE1394_BROADCAST_CHANNEL,
1167 1168 dev->card->link_speed, 8,
1168 context = fw_iso_context_create(dev->card, 1169 fwnet_receive_broadcast, dev);
1169 FW_ISO_CONTEXT_RECEIVE, IEEE1394_BROADCAST_CHANNEL, 1170 if (IS_ERR(context)) {
1170 dev->card->link_speed, 8, fwnet_receive_broadcast, dev); 1171 retval = PTR_ERR(context);
1171 if (IS_ERR(context)) { 1172 goto failed_context_create;
1172 retval = PTR_ERR(context); 1173 }
1173 goto failed_context_create;
1174 }
1175 1174
1176 retval = fw_iso_buffer_init(&dev->broadcast_rcv_buffer, 1175 retval = fw_iso_buffer_init(&dev->broadcast_rcv_buffer, dev->card,
1177 dev->card, FWNET_ISO_PAGE_COUNT, DMA_FROM_DEVICE); 1176 FWNET_ISO_PAGE_COUNT, DMA_FROM_DEVICE);
1178 if (retval < 0) 1177 if (retval < 0)
1179 goto failed_buffer_init; 1178 goto failed_buffer_init;
1180 1179
1181 ptrptr = kmalloc(sizeof(void *) * num_packets, GFP_KERNEL); 1180 ptrptr = kmalloc(sizeof(void *) * num_packets, GFP_KERNEL);
1182 if (!ptrptr) { 1181 if (!ptrptr) {
1183 retval = -ENOMEM; 1182 retval = -ENOMEM;
1184 goto failed_ptrs_alloc; 1183 goto failed_ptrs_alloc;
1185 } 1184 }
1186 1185
1187 dev->broadcast_rcv_buffer_ptrs = ptrptr; 1186 dev->broadcast_rcv_buffer_ptrs = ptrptr;
1188 for (u = 0; u < FWNET_ISO_PAGE_COUNT; u++) { 1187 for (u = 0; u < FWNET_ISO_PAGE_COUNT; u++) {
1189 void *ptr; 1188 void *ptr;
1190 unsigned v; 1189 unsigned v;
1191 1190
1192 ptr = kmap(dev->broadcast_rcv_buffer.pages[u]); 1191 ptr = kmap(dev->broadcast_rcv_buffer.pages[u]);
1193 for (v = 0; v < num_packets / FWNET_ISO_PAGE_COUNT; v++) 1192 for (v = 0; v < num_packets / FWNET_ISO_PAGE_COUNT; v++)
1194 *ptrptr++ = (void *) 1193 *ptrptr++ = (void *) ((char *)ptr + v * max_receive);
1195 ((char *)ptr + v * max_receive);
1196 }
1197 dev->broadcast_rcv_context = context;
1198 } else {
1199 context = dev->broadcast_rcv_context;
1200 } 1194 }
1195 dev->broadcast_rcv_context = context;
1201 1196
1202 packet.payload_length = max_receive; 1197 packet.payload_length = max_receive;
1203 packet.interrupt = 1; 1198 packet.interrupt = 1;