ieee1394: add preprocessor constant for invalid csr address
Replace occurrences of the magic value ~(u64)0 for invalid
CSR address spaces by a named constant for better readability.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Ben Collins <bcollins@ubuntu.com>
diff --git a/drivers/ieee1394/csr1212.c b/drivers/ieee1394/csr1212.c
index 157735442..586f71e 100644
--- a/drivers/ieee1394/csr1212.c
+++ b/drivers/ieee1394/csr1212.c
@@ -779,7 +779,7 @@
romsize = (romsize + (csr->max_rom - 1)) & ~(csr->max_rom - 1);
csr_addr = csr->ops->allocate_addr_range(romsize, csr->max_rom, csr->private);
- if (csr_addr == ~0ULL) {
+ if (csr_addr == CSR1212_INVALID_ADDR_SPACE) {
return CSR1212_ENOMEM;
}
if (csr_addr < CSR1212_REGISTER_SPACE_BASE) {
diff --git a/drivers/ieee1394/csr1212.h b/drivers/ieee1394/csr1212.h
index cecd587..17ddd72 100644
--- a/drivers/ieee1394/csr1212.h
+++ b/drivers/ieee1394/csr1212.h
@@ -192,6 +192,7 @@
#define CSR1212_EXTENDED_ROM_SIZE (0x10000 * sizeof(u_int32_t))
+#define CSR1212_INVALID_ADDR_SPACE -1
/* Config ROM image structures */
struct csr1212_bus_info_block_img {
diff --git a/drivers/ieee1394/eth1394.c b/drivers/ieee1394/eth1394.c
index 3ec3b13..cf80fed 100644
--- a/drivers/ieee1394/eth1394.c
+++ b/drivers/ieee1394/eth1394.c
@@ -367,7 +367,7 @@
spin_lock_init(&node_info->pdg.lock);
INIT_LIST_HEAD(&node_info->pdg.list);
node_info->pdg.sz = 0;
- node_info->fifo = ETHER1394_INVALID_ADDR;
+ node_info->fifo = CSR1212_INVALID_ADDR_SPACE;
ud->device.driver_data = node_info;
new_node->ud = ud;
@@ -566,13 +566,11 @@
if (!(host->config_roms & HPSB_CONFIG_ROM_ENTRY_IP1394))
return;
- fifo_addr = hpsb_allocate_and_register_addrspace(ð1394_highlevel,
- host,
- &addr_ops,
- ETHER1394_REGION_ADDR_LEN,
- ETHER1394_REGION_ADDR_LEN,
- -1, -1);
- if (fifo_addr == ~0ULL)
+ fifo_addr = hpsb_allocate_and_register_addrspace(
+ ð1394_highlevel, host, &addr_ops,
+ ETHER1394_REGION_ADDR_LEN, ETHER1394_REGION_ADDR_LEN,
+ CSR1212_INVALID_ADDR_SPACE, CSR1212_INVALID_ADDR_SPACE);
+ if (fifo_addr == CSR1212_INVALID_ADDR_SPACE)
goto out;
/* We should really have our own alloc_hpsbdev() function in
@@ -1686,7 +1684,7 @@
goto fail;
}
node_info = (struct eth1394_node_info*)node->ud->device.driver_data;
- if (node_info->fifo == ETHER1394_INVALID_ADDR) {
+ if (node_info->fifo == CSR1212_INVALID_ADDR_SPACE) {
ret = -EAGAIN;
goto fail;
}
diff --git a/drivers/ieee1394/eth1394.h b/drivers/ieee1394/eth1394.h
index a77213c..c45cbff 100644
--- a/drivers/ieee1394/eth1394.h
+++ b/drivers/ieee1394/eth1394.h
@@ -32,8 +32,6 @@
* S3200 (per Table 16-3 of IEEE 1394b-2002). */
#define ETHER1394_REGION_ADDR_LEN 4096
-#define ETHER1394_INVALID_ADDR ~0ULL
-
/* GASP identifier numbers for IPv4 over IEEE 1394 */
#define ETHER1394_GASP_SPECIFIER_ID 0x00005E
#define ETHER1394_GASP_SPECIFIER_ID_HI ((ETHER1394_GASP_SPECIFIER_ID >> 8) & 0xffff)
diff --git a/drivers/ieee1394/highlevel.c b/drivers/ieee1394/highlevel.c
index 29c5255..165dcd66 100644
--- a/drivers/ieee1394/highlevel.c
+++ b/drivers/ieee1394/highlevel.c
@@ -301,7 +301,7 @@
{
struct hpsb_address_serve *as, *a1, *a2;
struct list_head *entry;
- u64 retval = ~0ULL;
+ u64 retval = CSR1212_INVALID_ADDR_SPACE;
unsigned long flags;
u64 align_mask = ~(alignment - 1);
@@ -314,9 +314,10 @@
/* default range,
* avoids controller's posted write area (see OHCI 1.1 clause 1.5) */
- if (start == ~0ULL && end == ~0ULL) {
+ if (start == CSR1212_INVALID_ADDR_SPACE &&
+ end == CSR1212_INVALID_ADDR_SPACE) {
start = host->middle_addr_space;
- end = CSR1212_ALL_SPACE_END;
+ end = CSR1212_ALL_SPACE_END;
}
if (((start|end) & ~align_mask) || (start >= end) || (end > 0x1000000000000ULL)) {
@@ -360,7 +361,7 @@
write_unlock_irqrestore(&addr_space_lock, flags);
- if (retval == ~0ULL) {
+ if (retval == CSR1212_INVALID_ADDR_SPACE) {
kfree(as);
}
diff --git a/drivers/ieee1394/sbp2.c b/drivers/ieee1394/sbp2.c
index 975a56b..1d5ceb7 100644
--- a/drivers/ieee1394/sbp2.c
+++ b/drivers/ieee1394/sbp2.c
@@ -794,7 +794,7 @@
scsi_id->ud = ud;
scsi_id->speed_code = IEEE1394_SPEED_100;
scsi_id->max_payload_size = sbp2_speedto_max_payload[IEEE1394_SPEED_100];
- scsi_id->status_fifo_addr = ~0ULL;
+ scsi_id->status_fifo_addr = CSR1212_INVALID_ADDR_SPACE;
atomic_set(&scsi_id->sbp2_login_complete, 0);
INIT_LIST_HEAD(&scsi_id->sbp2_command_orb_inuse);
INIT_LIST_HEAD(&scsi_id->sbp2_command_orb_completed);
@@ -848,7 +848,7 @@
&sbp2_highlevel, ud->ne->host, &sbp2_ops,
sizeof(struct sbp2_status_block), sizeof(quadlet_t),
ud->ne->host->low_addr_space, CSR1212_ALL_SPACE_END);
- if (scsi_id->status_fifo_addr == ~0ULL) {
+ if (scsi_id->status_fifo_addr == CSR1212_INVALID_ADDR_SPACE) {
SBP2_ERR("failed to allocate status FIFO address range");
goto failed_alloc;
}
@@ -1090,9 +1090,9 @@
SBP2_DMA_FREE("single query logins data");
}
- if (scsi_id->status_fifo_addr != ~0ULL)
+ if (scsi_id->status_fifo_addr != CSR1212_INVALID_ADDR_SPACE)
hpsb_unregister_addrspace(&sbp2_highlevel, hi->host,
- scsi_id->status_fifo_addr);
+ scsi_id->status_fifo_addr);
scsi_id->ud->device.driver_data = NULL;
