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authorStefan Richter <stefanr@s5r6.in-berlin.de>2006-10-21 01:23:56 +0200
committerStefan Richter <stefanr@s5r6.in-berlin.de>2006-12-07 21:32:01 +0100
commit7fdfc90945e308dc1be37e3914cd979a535263e9 (patch)
tree524361e6f2d765bb92812906fcec541c5f5cdef2 /drivers/ieee1394/nodemgr.c
parentb7cffc57a777722941cfd904fcdbb47fc615b808 (diff)
ieee1394: nodemgr: reflect which return values are errors
Give better names to local variables. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'drivers/ieee1394/nodemgr.c')
-rw-r--r--drivers/ieee1394/nodemgr.c64
1 files changed, 30 insertions, 34 deletions
diff --git a/drivers/ieee1394/nodemgr.c b/drivers/ieee1394/nodemgr.c
index b79ff695ca3c..bffa26e48152 100644
--- a/drivers/ieee1394/nodemgr.c
+++ b/drivers/ieee1394/nodemgr.c
@@ -67,7 +67,7 @@ static int nodemgr_check_speed(struct nodemgr_csr_info *ci, u64 addr,
{
quadlet_t q;
u8 i, *speed, old_speed, good_speed;
- int ret;
+ int error;
speed = &(ci->host->speed[NODEID_TO_NODE(ci->nodeid)]);
old_speed = *speed;
@@ -79,9 +79,9 @@ static int nodemgr_check_speed(struct nodemgr_csr_info *ci, u64 addr,
* just finished its initialization. */
for (i = IEEE1394_SPEED_100; i <= old_speed; i++) {
*speed = i;
- ret = hpsb_read(ci->host, ci->nodeid, ci->generation, addr,
- &q, sizeof(quadlet_t));
- if (ret)
+ error = hpsb_read(ci->host, ci->nodeid, ci->generation, addr,
+ &q, sizeof(quadlet_t));
+ if (error)
break;
*buffer = q;
good_speed = i;
@@ -95,19 +95,19 @@ static int nodemgr_check_speed(struct nodemgr_csr_info *ci, u64 addr,
return 0;
}
*speed = old_speed;
- return ret;
+ return error;
}
static int nodemgr_bus_read(struct csr1212_csr *csr, u64 addr, u16 length,
void *buffer, void *__ci)
{
struct nodemgr_csr_info *ci = (struct nodemgr_csr_info*)__ci;
- int i, ret;
+ int i, error;
for (i = 1; ; i++) {
- ret = hpsb_read(ci->host, ci->nodeid, ci->generation, addr,
- buffer, length);
- if (!ret) {
+ error = hpsb_read(ci->host, ci->nodeid, ci->generation, addr,
+ buffer, length);
+ if (!error) {
ci->speed_unverified = 0;
break;
}
@@ -118,14 +118,14 @@ static int nodemgr_bus_read(struct csr1212_csr *csr, u64 addr, u16 length,
/* The ieee1394_core guessed the node's speed capability from
* the self ID. Check whether a lower speed works. */
if (ci->speed_unverified && length == sizeof(quadlet_t)) {
- ret = nodemgr_check_speed(ci, addr, buffer);
- if (!ret)
+ error = nodemgr_check_speed(ci, addr, buffer);
+ if (!error)
break;
}
if (msleep_interruptible(334))
return -EINTR;
}
- return ret;
+ return error;
}
static int nodemgr_get_max_rom(quadlet_t *bus_info_data, void *__ci)
@@ -1226,14 +1226,11 @@ static int nodemgr_uevent(struct class_device *cdev, char **envp, int num_envp,
int hpsb_register_protocol(struct hpsb_protocol_driver *driver)
{
- int ret;
-
/* This will cause a probe for devices */
- ret = driver_register(&driver->driver);
- if (!ret)
+ int error = driver_register(&driver->driver);
+ if (!error)
nodemgr_create_drv_files(driver);
-
- return ret;
+ return error;
}
void hpsb_unregister_protocol(struct hpsb_protocol_driver *driver)
@@ -1468,7 +1465,7 @@ static void nodemgr_irm_write_bc(struct node_entry *ne, int generation)
{
const u64 bc_addr = (CSR_REGISTER_BASE | CSR_BROADCAST_CHANNEL);
quadlet_t bc_remote, bc_local;
- int ret;
+ int error;
if (!ne->host->is_irm || ne->generation != generation ||
ne->nodeid == ne->host->node_id)
@@ -1477,9 +1474,9 @@ static void nodemgr_irm_write_bc(struct node_entry *ne, int generation)
bc_local = cpu_to_be32(ne->host->csr.broadcast_channel);
/* Check if the register is implemented and 1394a compliant. */
- ret = hpsb_read(ne->host, ne->nodeid, generation, bc_addr, &bc_remote,
- sizeof(bc_remote));
- if (!ret && bc_remote & cpu_to_be32(0x80000000) &&
+ error = hpsb_read(ne->host, ne->nodeid, generation, bc_addr, &bc_remote,
+ sizeof(bc_remote));
+ if (!error && bc_remote & cpu_to_be32(0x80000000) &&
bc_remote != bc_local)
hpsb_node_write(ne, bc_addr, &bc_local, sizeof(bc_local));
}
@@ -1569,7 +1566,7 @@ static void nodemgr_node_probe(struct host_info *hi, int generation)
static int nodemgr_send_resume_packet(struct hpsb_host *host)
{
struct hpsb_packet *packet;
- int ret = 1;
+ int error = -ENOMEM;
packet = hpsb_make_phypacket(host,
EXTPHYPACKET_TYPE_RESUME |
@@ -1577,12 +1574,12 @@ static int nodemgr_send_resume_packet(struct hpsb_host *host)
if (packet) {
packet->no_waiter = 1;
packet->generation = get_hpsb_generation(host);
- ret = hpsb_send_packet(packet);
+ error = hpsb_send_packet(packet);
}
- if (ret)
+ if (error)
HPSB_WARN("fw-host%d: Failed to broadcast resume packet",
host->id);
- return ret;
+ return error;
}
/* Perform a few high-level IRM responsibilities. */
@@ -1852,20 +1849,19 @@ static struct hpsb_highlevel nodemgr_highlevel = {
int init_ieee1394_nodemgr(void)
{
- int ret;
+ int error;
- ret = class_register(&nodemgr_ne_class);
- if (ret < 0)
- return ret;
+ error = class_register(&nodemgr_ne_class);
+ if (error)
+ return error;
- ret = class_register(&nodemgr_ud_class);
- if (ret < 0) {
+ error = class_register(&nodemgr_ud_class);
+ if (error) {
class_unregister(&nodemgr_ne_class);
- return ret;
+ return error;
}
hpsb_register_highlevel(&nodemgr_highlevel);
-
return 0;
}