diff --git a/drivers/net/wimax/i2400m/driver.c b/drivers/net/wimax/i2400m/driver.c
index 7ba00de..e3b2c24 100644
--- a/drivers/net/wimax/i2400m/driver.c
+++ b/drivers/net/wimax/i2400m/driver.c
@@ -90,6 +90,14 @@
 		 "False by default (so the device is told to do power "
 		 "saving).");
 
+static char i2400m_debug_params[128];
+module_param_string(debug, i2400m_debug_params, sizeof(i2400m_debug_params),
+		    0644);
+MODULE_PARM_DESC(debug,
+		 "String of space-separated NAME:VALUE pairs, where NAMEs "
+		 "are the different debug submodules and VALUE are the "
+		 "initial debug value to set.");
+
 /**
  * i2400m_queue_work - schedule work on a i2400m's queue
  *
@@ -794,6 +802,8 @@
 static
 int __init i2400m_driver_init(void)
 {
+	d_parse_params(D_LEVEL, D_LEVEL_SIZE, i2400m_debug_params,
+		       "i2400m.debug");
 	return 0;
 }
 module_init(i2400m_driver_init);
diff --git a/drivers/net/wimax/i2400m/sdio.c b/drivers/net/wimax/i2400m/sdio.c
index 7c1b843..2d2cc5a 100644
--- a/drivers/net/wimax/i2400m/sdio.c
+++ b/drivers/net/wimax/i2400m/sdio.c
@@ -71,6 +71,14 @@
 static int ioe_timeout = 2;
 module_param(ioe_timeout, int, 0);
 
+static char i2400ms_debug_params[128];
+module_param_string(debug, i2400ms_debug_params, sizeof(i2400ms_debug_params),
+		    0644);
+MODULE_PARM_DESC(debug,
+		 "String of space-separated NAME:VALUE pairs, where NAMEs "
+		 "are the different debug submodules and VALUE are the "
+		 "initial debug value to set.");
+
 /* Our firmware file name list */
 static const char *i2400ms_bus_fw_names[] = {
 #define I2400MS_FW_FILE_NAME "i2400m-fw-sdio-1.3.sbcf"
@@ -559,6 +567,8 @@
 static
 int __init i2400ms_driver_init(void)
 {
+	d_parse_params(D_LEVEL, D_LEVEL_SIZE, i2400ms_debug_params,
+		       "i2400m_sdio.debug");
 	return sdio_register_driver(&i2400m_sdio_driver);
 }
 module_init(i2400ms_driver_init);
diff --git a/drivers/net/wimax/i2400m/usb.c b/drivers/net/wimax/i2400m/usb.c
index a5879e2..0634222 100644
--- a/drivers/net/wimax/i2400m/usb.c
+++ b/drivers/net/wimax/i2400m/usb.c
@@ -71,6 +71,13 @@
 #define D_SUBMODULE usb
 #include "usb-debug-levels.h"
 
+static char i2400mu_debug_params[128];
+module_param_string(debug, i2400mu_debug_params, sizeof(i2400mu_debug_params),
+		    0644);
+MODULE_PARM_DESC(debug,
+		 "String of space-separated NAME:VALUE pairs, where NAMEs "
+		 "are the different debug submodules and VALUE are the "
+		 "initial debug value to set.");
 
 /* Our firmware file name */
 static const char *i2400mu_bus_fw_names[] = {
@@ -633,6 +640,8 @@
 static
 int __init i2400mu_driver_init(void)
 {
+	d_parse_params(D_LEVEL, D_LEVEL_SIZE, i2400mu_debug_params,
+		       "i2400m_usb.debug");
 	return usb_register(&i2400mu_driver);
 }
 module_init(i2400mu_driver_init);
diff --git a/include/linux/wimax/debug.h b/include/linux/wimax/debug.h
index c703e03..db8096e 100644
--- a/include/linux/wimax/debug.h
+++ b/include/linux/wimax/debug.h
@@ -450,4 +450,76 @@
 })
 
 
+static inline
+void d_submodule_set(struct d_level *d_level, size_t d_level_size,
+		     const char *submodule, u8 level, const char *tag)
+{
+	struct d_level *itr, *top;
+	int index = -1;
+
+	for (itr = d_level, top = itr + d_level_size; itr < top; itr++) {
+		index++;
+		if (itr->name == NULL) {
+			printk(KERN_ERR "%s: itr->name NULL?? (%p, #%d)\n",
+			       tag, itr, index);
+			continue;
+		}
+		if (!strcmp(itr->name, submodule)) {
+			itr->level = level;
+			return;
+		}
+	}
+	printk(KERN_ERR "%s: unknown submodule %s\n", tag, submodule);
+}
+
+
+/**
+ * d_parse_params - Parse a string with debug parameters from the
+ * command line
+ *
+ * @d_level: level structure (D_LEVEL)
+ * @d_level_size: number of items in the level structure
+ *     (D_LEVEL_SIZE).
+ * @_params: string with the parameters; this is a space (not tab!)
+ *     separated list of NAME:VALUE, where value is the debug level
+ *     and NAME is the name of the submodule.
+ * @tag: string for error messages (example: MODULE.ARGNAME).
+ */
+static inline
+void d_parse_params(struct d_level *d_level, size_t d_level_size,
+		    const char *_params, const char *tag)
+{
+	char submodule[130], *params, *params_orig, *token, *colon;
+	unsigned level, tokens;
+
+	if (_params == NULL)
+		return;
+	params_orig = kstrdup(_params, GFP_KERNEL);
+	params = params_orig;
+	while (1) {
+		token = strsep(&params, " ");
+		if (token == NULL)
+			break;
+		if (*token == '\0')	/* eat joint spaces */
+			continue;
+		/* kernel's sscanf %s eats until whitespace, so we
+		 * replace : by \n so it doesn't get eaten later by
+		 * strsep */
+		colon = strchr(token, ':');
+		if (colon != NULL)
+			*colon = '\n';
+		tokens = sscanf(token, "%s\n%u", submodule, &level);
+		if (colon != NULL)
+			*colon = ':';	/* set back, for error messages */
+		if (tokens == 2)
+			d_submodule_set(d_level, d_level_size,
+					submodule, level, tag);
+		else
+			printk(KERN_ERR "%s: can't parse '%s' as a "
+			       "SUBMODULE:LEVEL (%d tokens)\n",
+			       tag, token, tokens);
+	}
+	kfree(params_orig);
+}
+
 #endif /* #ifndef __debug__h__ */
diff --git a/net/wimax/stack.c b/net/wimax/stack.c
index 79fb7d7..c886641 100644
--- a/net/wimax/stack.c
+++ b/net/wimax/stack.c
@@ -60,6 +60,14 @@
 #define D_SUBMODULE stack
 #include "debug-levels.h"
 
+static char wimax_debug_params[128];
+module_param_string(debug, wimax_debug_params, sizeof(wimax_debug_params),
+		    0644);
+MODULE_PARM_DESC(debug,
+		 "String of space-separated NAME:VALUE pairs, where NAMEs "
+		 "are the different debug submodules and VALUE are the "
+		 "initial debug value to set.");
+
 /*
  * Authoritative source for the RE_STATE_CHANGE attribute policy
  *
@@ -562,6 +570,9 @@
 	int result, cnt;
 
 	d_fnstart(4, NULL, "()\n");
+	d_parse_params(D_LEVEL, D_LEVEL_SIZE, wimax_debug_params,
+		       "wimax.debug");
+
 	snprintf(wimax_gnl_family.name, sizeof(wimax_gnl_family.name),
 		 "WiMAX");
 	result = genl_register_family(&wimax_gnl_family);