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Diffstat (limited to 'samples/firmware_class/firmware_sample_driver.c')
-rw-r--r--samples/firmware_class/firmware_sample_driver.c45
1 files changed, 25 insertions, 20 deletions
diff --git a/samples/firmware_class/firmware_sample_driver.c b/samples/firmware_class/firmware_sample_driver.c
index ff0f2f2bd1a..165cff98032 100644
--- a/samples/firmware_class/firmware_sample_driver.c
+++ b/samples/firmware_class/firmware_sample_driver.c
@@ -12,8 +12,7 @@
#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",
@@ -31,11 +30,14 @@ static void sample_firmware_load(char *firmware, int size)
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;
@@ -47,17 +49,20 @@ static void sample_probe_default(void)
/* 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;
@@ -70,7 +75,7 @@ static void sample_probe_specific(void)
}
static void sample_probe_async_cont(const struct firmware *fw, void *context)
{
- if(!fw){
+ if (!fw) {
printk(KERN_ERR
"firmware_sample_driver: firmware load failed\n");
return;
@@ -80,19 +85,18 @@ static void sample_probe_async_cont(const struct firmware *fw, void *context)
(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){
- printk(KERN_ERR
- "firmware_sample_driver:"
+ 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)
@@ -105,11 +109,12 @@ static int sample_init(void)
sample_probe_async();
return 0;
}
+
static void __exit sample_exit(void)
{
}
-module_init (sample_init);
-module_exit (sample_exit);
+module_init(sample_init);
+module_exit(sample_exit);
MODULE_LICENSE("GPL");