Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff
[linux-2.6.git] / Documentation / firmware_class / firmware_sample_driver.c
index e1c56a7..87feccd 100644 (file)
@@ -5,24 +5,17 @@
  *
  * Sample code on how to use request_firmware() from drivers.
  *
- * Note that register_firmware() is currently useless.
- *
  */
 
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/device.h>
+#include <linux/string.h>
 
 #include "linux/firmware.h"
 
-#define WE_CAN_NEED_FIRMWARE_BEFORE_USERSPACE_IS_AVAILABLE
-#ifdef WE_CAN_NEED_FIRMWARE_BEFORE_USERSPACE_IS_AVAILABLE
-char __init inkernel_firmware[] = "let's say that this is firmware\n";
-#endif
-
 static struct device ghost_device = {
-       .name      = "Ghost Device",
        .bus_id    = "ghost0",
 };
 
@@ -32,14 +25,14 @@ static void sample_firmware_load(char *firmware, int size)
        u8 buf[size+1];
        memcpy(buf, firmware, size);
        buf[size] = '\0';
-       printk("firmware_sample_driver: firmware: %s\n", buf);
+       printk(KERN_INFO "firmware_sample_driver: firmware: %s\n", buf);
 }
 
 static void sample_probe_default(void)
 {
        /* uses the default method to get the firmware */
         const struct firmware *fw_entry;
-       printk("firmware_sample_driver: a ghost device got inserted :)\n");
+       printk(KERN_INFO "firmware_sample_driver: a ghost device got inserted :)\n");
 
         if(request_firmware(&fw_entry, "sample_driver_fw", &ghost_device)!=0)
        {
@@ -61,7 +54,7 @@ static void sample_probe_specific(void)
 
        /* NOTE: This currently doesn't work */
 
-       printk("firmware_sample_driver: a ghost device got inserted :)\n");
+       printk(KERN_INFO "firmware_sample_driver: a ghost device got inserted :)\n");
 
         if(request_firmware(NULL, "sample_driver_fw", &ghost_device)!=0)
        {
@@ -83,7 +76,7 @@ static void sample_probe_async_cont(const struct firmware *fw, void *context)
                return;
        }
 
-       printk("firmware_sample_driver: device pointer \"%s\"\n",
+       printk(KERN_INFO "firmware_sample_driver: device pointer \"%s\"\n",
               (char *)context);
        sample_firmware_load(fw->data, fw->size);
 }
@@ -91,7 +84,7 @@ static void sample_probe_async(void)
 {
        /* Let's say that I can't sleep */
        int error;
-       error = request_firmware_nowait (THIS_MODULE,
+       error = request_firmware_nowait (THIS_MODULE, FW_ACTION_NOHOTPLUG,
                                         "sample_driver_fw", &ghost_device,
                                         "my device pointer",
                                         sample_probe_async_cont);
@@ -104,10 +97,6 @@ static void sample_probe_async(void)
 
 static int sample_init(void)
 {
-#ifdef WE_CAN_NEED_FIRMWARE_BEFORE_USERSPACE_IS_AVAILABLE
-       register_firmware("sample_driver_fw", inkernel_firmware,
-                         sizeof(inkernel_firmware));
-#endif
        device_initialize(&ghost_device);
        /* since there is no real hardware insertion I just call the
         * sample probe functions here */