#include <linux/init.h>
#include <linux/device.h>
#include <linux/string.h>
-
-#include "linux/firmware.h"
+#include <linux/firmware.h>
static struct device ghost_device = {
.bus_id = "ghost0",
static void sample_probe_default(void)
{
/* uses the default method to get the firmware */
- const struct firmware *fw_entry;
- printk(KERN_INFO "firmware_sample_driver: a ghost device got inserted :)\n");
+ const struct firmware *fw_entry;
+ int retval;
+
+ printk(KERN_INFO "firmware_sample_driver: "
+ "a ghost device got inserted :)\n");
- if (request_firmware(&fw_entry, "sample_driver_fw", &ghost_device)!=0) {
+ retval = request_firmware(&fw_entry, "sample_driver_fw", &ghost_device);
+ if (retval) {
printk(KERN_ERR
"firmware_sample_driver: Firmware not available\n");
return;
}
-
+
sample_firmware_load(fw_entry->data, fw_entry->size);
release_firmware(fw_entry);
/* finish setting up the device */
}
+
static void sample_probe_specific(void)
{
+ int retval;
/* Uses some specific hotplug support to get the firmware from
* userspace directly into the hardware, or via some sysfs file */
/* NOTE: This currently doesn't work */
- printk(KERN_INFO "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) {
+ retval = request_firmware(NULL, "sample_driver_fw", &ghost_device);
+ if (retval) {
printk(KERN_ERR
"firmware_sample_driver: Firmware load failed\n");
return;
}
-
+
/* request_firmware blocks until userspace finished, so at
* this point the firmware should be already in the device */
/* finish setting up the device */
}
+
static void sample_probe_async_cont(const struct firmware *fw, void *context)
{
if (!fw) {
(char *)context);
sample_firmware_load(fw->data, fw->size);
}
+
static void sample_probe_async(void)
{
/* Let's say that I can't sleep */
int error;
- error = request_firmware_nowait (THIS_MODULE, FW_ACTION_NOHOTPLUG,
- "sample_driver_fw", &ghost_device,
- "my device pointer",
- sample_probe_async_cont);
- if (error) {
+ error = request_firmware_nowait(THIS_MODULE, FW_ACTION_NOHOTPLUG,
+ "sample_driver_fw", &ghost_device,
+ "my device pointer",
+ sample_probe_async_cont);
+ if (error)
printk(KERN_ERR "firmware_sample_driver:"
" request_firmware_nowait failed\n");
- }
}
static int sample_init(void)
{
}
-module_init (sample_init);
-module_exit (sample_exit);
+module_init(sample_init);
+module_exit(sample_exit);
MODULE_LICENSE("GPL");