diff --git a/bes2600/bes2600_factory.c b/bes2600/bes2600_factory.c
index 8d60b7c..1cda447 100644
--- a/bes2600/bes2600_factory.c
+++ b/bes2600/bes2600_factory.c
@@ -31,6 +31,18 @@
 
 static DEFINE_MUTEX(factory_lock);
 
+/*
+ * struct device * for request_firmware() context. Set once at SDIO
+ * probe via bes2600_factory_set_dev(). NULL is tolerated (falls back
+ * to the udev-less firmware-class path) but loses per-device logging.
+ */
+static struct device *bes2600_factory_dev;
+
+void bes2600_factory_set_dev(struct device *dev)
+{
+	bes2600_factory_dev = dev;
+}
+
 /*
  * It is only used for temporary storage.
  * Every time get the factory, it will read from the
@@ -148,7 +160,7 @@ static int factory_section_read_file(char *path, void *buffer)
 
 	bes_devel("requesting firmware-class %s\n", path);
 
-	ret = request_firmware(&fw, path, NULL);
+	ret = request_firmware(&fw, path, bes2600_factory_dev);
 	if (ret) {
 		bes_devel("BES2600: request_firmware(%s) failed: %d\n", path, ret);
 		return -1;
diff --git a/bes2600/bes2600_factory.h b/bes2600/bes2600_factory.h
index 3835b0d..7dbe9f8 100644
--- a/bes2600/bes2600_factory.h
+++ b/bes2600/bes2600_factory.h
@@ -199,6 +199,9 @@ enum factory_cali_status {
 /* just calibrate 11n, other protocols are automatically mapped */
 #define WIFI_RF_11N_MODE 0x15
 
+/* set the struct device * used for request_firmware() context */
+void bes2600_factory_set_dev(struct device *dev);
+
 /* read wifi & bt factory cali value*/
 u8* bes2600_get_factory_cali_data(u8 *file_buffer, u32 *data_len, char *path);
 void factory_little_endian_cvrt(u8 *data);
diff --git a/bes2600/bes2600_sdio.c b/bes2600/bes2600_sdio.c
index 13d4ff1..f172d53 100644
--- a/bes2600/bes2600_sdio.c
+++ b/bes2600/bes2600_sdio.c
@@ -30,6 +30,7 @@
 #include "bes2600.h"
 #include "sbus.h"
 #include "bes2600_plat.h"
+#include "bes2600_factory.h"
 #include "hwio.h"
 #include "bes_chardev.h"
 #include "bes_log.h"
@@ -1834,6 +1835,9 @@ static int bes2600_sdio_probe(struct sdio_func *func,
 	if (ret)
 		goto err;
 
+	/* wire struct device into factory.c for request_firmware() context */
+	bes2600_factory_set_dev(dev);
+
 	self->pdata = bes2600_get_platform_data();
 	self->func = func;
 	self->dev = &func->dev;