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ieee1394: nodemgr: reflect which return values are errors 

Give better names to local variables.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Stefan Richter 2006-10-21 01:23:56 +02:00
parent b7cffc57a7
commit 7fdfc90945
1 changed files with 30 additions and 34 deletions
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64
drivers/ieee1394/nodemgr.c
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@ -67,7 +67,7 @@ static int nodemgr_check_speed(struct nodemgr_csr_info *ci, u64 addr,
{ {
quadlet_t q; quadlet_t q;
u8 i, *speed, old_speed, good_speed; u8 i, *speed, old_speed, good_speed;
int ret; int error;
speed = &(ci->host->speed[NODEID_TO_NODE(ci->nodeid)]); speed = &(ci->host->speed[NODEID_TO_NODE(ci->nodeid)]);
old_speed = *speed; old_speed = *speed;
@ -79,9 +79,9 @@ static int nodemgr_check_speed(struct nodemgr_csr_info *ci, u64 addr,
* just finished its initialization. */ * just finished its initialization. */
for (i = IEEE1394_SPEED_100; i <= old_speed; i++) { for (i = IEEE1394_SPEED_100; i <= old_speed; i++) {
*speed = i; *speed = i;
ret = hpsb_read(ci->host, ci->nodeid, ci->generation, addr, error = hpsb_read(ci->host, ci->nodeid, ci->generation, addr,
&q, sizeof(quadlet_t)); &q, sizeof(quadlet_t));
if (ret) if (error)
break; break;
*buffer = q; *buffer = q;
good_speed = i; good_speed = i;
@ -95,19 +95,19 @@ static int nodemgr_check_speed(struct nodemgr_csr_info *ci, u64 addr,
return 0; return 0;
} }
*speed = old_speed; *speed = old_speed;
return ret; return error;
} }
static int nodemgr_bus_read(struct csr1212_csr *csr, u64 addr, u16 length, static int nodemgr_bus_read(struct csr1212_csr *csr, u64 addr, u16 length,
void *buffer, void *__ci) void *buffer, void *__ci)
{ {
struct nodemgr_csr_info *ci = (struct nodemgr_csr_info*)__ci; struct nodemgr_csr_info *ci = (struct nodemgr_csr_info*)__ci;
int i, ret; int i, error;
for (i = 1; ; i++) { for (i = 1; ; i++) {
ret = hpsb_read(ci->host, ci->nodeid, ci->generation, addr, error = hpsb_read(ci->host, ci->nodeid, ci->generation, addr,
buffer, length); buffer, length);
if (!ret) { if (!error) {
ci->speed_unverified = 0; ci->speed_unverified = 0;
break; 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 ieee1394_core guessed the node's speed capability from
* the self ID. Check whether a lower speed works. */ * the self ID. Check whether a lower speed works. */
if (ci->speed_unverified && length == sizeof(quadlet_t)) { if (ci->speed_unverified && length == sizeof(quadlet_t)) {
ret = nodemgr_check_speed(ci, addr, buffer); error = nodemgr_check_speed(ci, addr, buffer);
if (!ret) if (!error)
break; break;
} }
if (msleep_interruptible(334)) if (msleep_interruptible(334))
return -EINTR; return -EINTR;
} }
return ret; return error;
} }
static int nodemgr_get_max_rom(quadlet_t *bus_info_data, void *__ci) 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 hpsb_register_protocol(struct hpsb_protocol_driver *driver)
{ {
int ret;
/* This will cause a probe for devices */ /* This will cause a probe for devices */
ret = driver_register(&driver->driver); int error = driver_register(&driver->driver);
if (!ret) if (!error)
nodemgr_create_drv_files(driver); nodemgr_create_drv_files(driver);
return error;
return ret;
} }
void hpsb_unregister_protocol(struct hpsb_protocol_driver *driver) 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); const u64 bc_addr = (CSR_REGISTER_BASE | CSR_BROADCAST_CHANNEL);
quadlet_t bc_remote, bc_local; quadlet_t bc_remote, bc_local;
int ret; int error;
if (!ne->host->is_irm || ne->generation != generation || if (!ne->host->is_irm || ne->generation != generation ||
ne->nodeid == ne->host->node_id) 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); bc_local = cpu_to_be32(ne->host->csr.broadcast_channel);
/* Check if the register is implemented and 1394a compliant. */ /* Check if the register is implemented and 1394a compliant. */
ret = hpsb_read(ne->host, ne->nodeid, generation, bc_addr, &bc_remote, error = hpsb_read(ne->host, ne->nodeid, generation, bc_addr, &bc_remote,
sizeof(bc_remote)); sizeof(bc_remote));
if (!ret && bc_remote & cpu_to_be32(0x80000000) && if (!error && bc_remote & cpu_to_be32(0x80000000) &&
bc_remote != bc_local) bc_remote != bc_local)
hpsb_node_write(ne, bc_addr, &bc_local, sizeof(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) static int nodemgr_send_resume_packet(struct hpsb_host *host)
{ {
struct hpsb_packet *packet; struct hpsb_packet *packet;
int ret = 1; int error = -ENOMEM;
packet = hpsb_make_phypacket(host, packet = hpsb_make_phypacket(host,
EXTPHYPACKET_TYPE_RESUME | EXTPHYPACKET_TYPE_RESUME |
@ -1577,12 +1574,12 @@ static int nodemgr_send_resume_packet(struct hpsb_host *host)
if (packet) { if (packet) {
packet->no_waiter = 1; packet->no_waiter = 1;
packet->generation = get_hpsb_generation(host); 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", HPSB_WARN("fw-host%d: Failed to broadcast resume packet",
host->id); host->id);
return ret; return error;
} }
/* Perform a few high-level IRM responsibilities. */ /* Perform a few high-level IRM responsibilities. */
@ -1852,20 +1849,19 @@ static struct hpsb_highlevel nodemgr_highlevel = {
int init_ieee1394_nodemgr(void) int init_ieee1394_nodemgr(void)
{ {
int ret; int error;
ret = class_register(&nodemgr_ne_class); error = class_register(&nodemgr_ne_class);
if (ret < 0) if (error)
return ret; return error;
ret = class_register(&nodemgr_ud_class); error = class_register(&nodemgr_ud_class);
if (ret < 0) { if (error) {
class_unregister(&nodemgr_ne_class); class_unregister(&nodemgr_ne_class);
return ret; return error;
} }
hpsb_register_highlevel(&nodemgr_highlevel); hpsb_register_highlevel(&nodemgr_highlevel);
return 0; return 0;
} }