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path: root/drivers/net/wireless/iwmc3200wifi/debugfs.c
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Diffstat (limited to 'drivers/net/wireless/iwmc3200wifi/debugfs.c')
-rw-r--r--drivers/net/wireless/iwmc3200wifi/debugfs.c123
1 files changed, 19 insertions, 104 deletions
diff --git a/drivers/net/wireless/iwmc3200wifi/debugfs.c b/drivers/net/wireless/iwmc3200wifi/debugfs.c
index cbb81befdb55..53b0b7711f02 100644
--- a/drivers/net/wireless/iwmc3200wifi/debugfs.c
+++ b/drivers/net/wireless/iwmc3200wifi/debugfs.c
@@ -48,12 +48,11 @@ static struct {
#define add_dbg_module(dbg, name, id, initlevel) \
do { \
- struct dentry *d; \
dbg.dbg_module[id] = (initlevel); \
- d = debugfs_create_x8(name, 0600, dbg.dbgdir, \
- &(dbg.dbg_module[id])); \
- if (!IS_ERR(d)) \
- dbg.dbg_module_dentries[id] = d; \
+ dbg.dbg_module_dentries[id] = \
+ debugfs_create_x8(name, 0600, \
+ dbg.dbgdir, \
+ &(dbg.dbg_module[id])); \
} while (0)
static int iwm_debugfs_u32_read(void *data, u64 *val)
@@ -266,7 +265,7 @@ static ssize_t iwm_debugfs_rx_ticket_read(struct file *filp,
size_t count, loff_t *ppos)
{
struct iwm_priv *iwm = filp->private_data;
- struct iwm_rx_ticket_node *ticket, *next;
+ struct iwm_rx_ticket_node *ticket;
char *buf;
int buf_len = 4096, i;
size_t len = 0;
@@ -281,7 +280,8 @@ static ssize_t iwm_debugfs_rx_ticket_read(struct file *filp,
if (!buf)
return -ENOMEM;
- list_for_each_entry_safe(ticket, next, &iwm->rx_tickets, node) {
+ spin_lock(&iwm->ticket_lock);
+ list_for_each_entry(ticket, &iwm->rx_tickets, node) {
len += snprintf(buf + len, buf_len - len, "Ticket #%d\n",
ticket->ticket->id);
len += snprintf(buf + len, buf_len - len, "\taction: 0x%x\n",
@@ -289,14 +289,17 @@ static ssize_t iwm_debugfs_rx_ticket_read(struct file *filp,
len += snprintf(buf + len, buf_len - len, "\tflags: 0x%x\n",
ticket->ticket->flags);
}
+ spin_unlock(&iwm->ticket_lock);
for (i = 0; i < IWM_RX_ID_HASH; i++) {
- struct iwm_rx_packet *packet, *nxt;
+ struct iwm_rx_packet *packet;
struct list_head *pkt_list = &iwm->rx_packets[i];
+
if (!list_empty(pkt_list)) {
len += snprintf(buf + len, buf_len - len,
"Packet hash #%d\n", i);
- list_for_each_entry_safe(packet, nxt, pkt_list, node) {
+ spin_lock(&iwm->packet_lock[i]);
+ list_for_each_entry(packet, pkt_list, node) {
len += snprintf(buf + len, buf_len - len,
"\tPacket id: %d\n",
packet->id);
@@ -304,6 +307,7 @@ static ssize_t iwm_debugfs_rx_ticket_read(struct file *filp,
"\tPacket length: %lu\n",
packet->pkt_size);
}
+ spin_unlock(&iwm->packet_lock[i]);
}
}
@@ -418,89 +422,29 @@ static const struct file_operations iwm_debugfs_fw_err_fops = {
.read = iwm_debugfs_fw_err_read,
};
-int iwm_debugfs_init(struct iwm_priv *iwm)
+void iwm_debugfs_init(struct iwm_priv *iwm)
{
- int i, result;
- char devdir[16];
+ int i;
iwm->dbg.rootdir = debugfs_create_dir(KBUILD_MODNAME, NULL);
- result = PTR_ERR(iwm->dbg.rootdir);
- if (!result || IS_ERR(iwm->dbg.rootdir)) {
- if (result == -ENODEV) {
- IWM_ERR(iwm, "DebugFS (CONFIG_DEBUG_FS) not "
- "enabled in kernel config\n");
- result = 0; /* No debugfs support */
- }
- IWM_ERR(iwm, "Couldn't create rootdir: %d\n", result);
- goto error;
- }
-
- snprintf(devdir, sizeof(devdir), "%s", wiphy_name(iwm_to_wiphy(iwm)));
-
- iwm->dbg.devdir = debugfs_create_dir(devdir, iwm->dbg.rootdir);
- result = PTR_ERR(iwm->dbg.devdir);
- if (IS_ERR(iwm->dbg.devdir) && (result != -ENODEV)) {
- IWM_ERR(iwm, "Couldn't create devdir: %d\n", result);
- goto error;
- }
-
+ iwm->dbg.devdir = debugfs_create_dir(wiphy_name(iwm_to_wiphy(iwm)),
+ iwm->dbg.rootdir);
iwm->dbg.dbgdir = debugfs_create_dir("debug", iwm->dbg.devdir);
- result = PTR_ERR(iwm->dbg.dbgdir);
- if (IS_ERR(iwm->dbg.dbgdir) && (result != -ENODEV)) {
- IWM_ERR(iwm, "Couldn't create dbgdir: %d\n", result);
- goto error;
- }
-
iwm->dbg.rxdir = debugfs_create_dir("rx", iwm->dbg.devdir);
- result = PTR_ERR(iwm->dbg.rxdir);
- if (IS_ERR(iwm->dbg.rxdir) && (result != -ENODEV)) {
- IWM_ERR(iwm, "Couldn't create rx dir: %d\n", result);
- goto error;
- }
-
iwm->dbg.txdir = debugfs_create_dir("tx", iwm->dbg.devdir);
- result = PTR_ERR(iwm->dbg.txdir);
- if (IS_ERR(iwm->dbg.txdir) && (result != -ENODEV)) {
- IWM_ERR(iwm, "Couldn't create tx dir: %d\n", result);
- goto error;
- }
-
iwm->dbg.busdir = debugfs_create_dir("bus", iwm->dbg.devdir);
- result = PTR_ERR(iwm->dbg.busdir);
- if (IS_ERR(iwm->dbg.busdir) && (result != -ENODEV)) {
- IWM_ERR(iwm, "Couldn't create bus dir: %d\n", result);
- goto error;
- }
-
- if (iwm->bus_ops->debugfs_init) {
- result = iwm->bus_ops->debugfs_init(iwm, iwm->dbg.busdir);
- if (result < 0) {
- IWM_ERR(iwm, "Couldn't create bus entry: %d\n", result);
- goto error;
- }
- }
-
+ if (iwm->bus_ops->debugfs_init)
+ iwm->bus_ops->debugfs_init(iwm, iwm->dbg.busdir);
iwm->dbg.dbg_level = IWM_DL_NONE;
iwm->dbg.dbg_level_dentry =
debugfs_create_file("level", 0200, iwm->dbg.dbgdir, iwm,
&fops_iwm_dbg_level);
- result = PTR_ERR(iwm->dbg.dbg_level_dentry);
- if (IS_ERR(iwm->dbg.dbg_level_dentry) && (result != -ENODEV)) {
- IWM_ERR(iwm, "Couldn't create dbg_level: %d\n", result);
- goto error;
- }
-
iwm->dbg.dbg_modules = IWM_DM_DEFAULT;
iwm->dbg.dbg_modules_dentry =
debugfs_create_file("modules", 0200, iwm->dbg.dbgdir, iwm,
&fops_iwm_dbg_modules);
- result = PTR_ERR(iwm->dbg.dbg_modules_dentry);
- if (IS_ERR(iwm->dbg.dbg_modules_dentry) && (result != -ENODEV)) {
- IWM_ERR(iwm, "Couldn't create dbg_modules: %d\n", result);
- goto error;
- }
for (i = 0; i < __IWM_DM_NR; i++)
add_dbg_module(iwm->dbg, iwm_debug_module[i].name,
@@ -509,44 +453,15 @@ int iwm_debugfs_init(struct iwm_priv *iwm)
iwm->dbg.txq_dentry = debugfs_create_file("queues", 0200,
iwm->dbg.txdir, iwm,
&iwm_debugfs_txq_fops);
- result = PTR_ERR(iwm->dbg.txq_dentry);
- if (IS_ERR(iwm->dbg.txq_dentry) && (result != -ENODEV)) {
- IWM_ERR(iwm, "Couldn't create tx queue: %d\n", result);
- goto error;
- }
-
iwm->dbg.tx_credit_dentry = debugfs_create_file("credits", 0200,
iwm->dbg.txdir, iwm,
&iwm_debugfs_tx_credit_fops);
- result = PTR_ERR(iwm->dbg.tx_credit_dentry);
- if (IS_ERR(iwm->dbg.tx_credit_dentry) && (result != -ENODEV)) {
- IWM_ERR(iwm, "Couldn't create tx credit: %d\n", result);
- goto error;
- }
-
iwm->dbg.rx_ticket_dentry = debugfs_create_file("tickets", 0200,
iwm->dbg.rxdir, iwm,
&iwm_debugfs_rx_ticket_fops);
- result = PTR_ERR(iwm->dbg.rx_ticket_dentry);
- if (IS_ERR(iwm->dbg.rx_ticket_dentry) && (result != -ENODEV)) {
- IWM_ERR(iwm, "Couldn't create rx ticket: %d\n", result);
- goto error;
- }
-
iwm->dbg.fw_err_dentry = debugfs_create_file("last_fw_err", 0200,
iwm->dbg.dbgdir, iwm,
&iwm_debugfs_fw_err_fops);
- result = PTR_ERR(iwm->dbg.fw_err_dentry);
- if (IS_ERR(iwm->dbg.fw_err_dentry) && (result != -ENODEV)) {
- IWM_ERR(iwm, "Couldn't create last FW err: %d\n", result);
- goto error;
- }
-
-
- return 0;
-
- error:
- return result;
}
void iwm_debugfs_exit(struct iwm_priv *iwm)
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.