static void callbackfn_rbu(const struct firmware *fw, void *context)
{
rbu_data.entry_created = 0;
if (!fw || !fw->size)
return;
spin_lock(&rbu_data.lock);
if (!strcmp(image_type, "mono")) {
if (!img_update_realloc(fw->size))
memcpy(rbu_data.image_update_buffer,
fw->data, fw->size);
} else if (!strcmp(image_type, "packet")) {
/*
* we need to free previous packets if a
* new hunk of packets needs to be downloaded
*/
packet_empty_list();
if (packetize_data(fw->data, fw->size))
/* Incase something goes wrong when we are
* in middle of packetizing the data, we
* need to free up whatever packets might
* have been created before we quit.
*/
packet_empty_list();
} else
pr_debug("invalid image type specified.\n");
spin_unlock(&rbu_data.lock);
}
static ssize_t write_rbu_image_type(struct kobject *kobj,
struct bin_attribute *bin_attr,
char *buffer, loff_t pos, size_t count)
{
int rc = count;
int req_firm_rc = 0;
int i;
spin_lock(&rbu_data.lock);
/*
* Find the first newline or space
*/
for (i = 0; i < count; ++i)
if (buffer[i] == '\n' || buffer[i] == ' ') {
buffer[i] = '\0';
break;
}
if (i == count)
buffer[count] = '\0';
if (strstr(buffer, "mono"))
strcpy(image_type, "mono");
else if (strstr(buffer, "packet"))
strcpy(image_type, "packet");
else if (strstr(buffer, "init")) {
/*
* If due to the user error the driver gets in a bad
* state where even though it is loaded , the
* /sys/class/firmware/dell_rbu entries are missing.
* to cover this situation the user can recreate entries
* by writing init to image_type.
*/
if (!rbu_data.entry_created) {
spin_unlock(&rbu_data.lock);
req_firm_rc = request_firmware_nowait(THIS_MODULE,
FW_ACTION_NOHOTPLUG, "dell_rbu",
&rbu_device->dev, &context,
callbackfn_rbu);
if (req_firm_rc) {
printk(KERN_ERR
"dell_rbu:%s request_firmware_nowait"
" failed %d\n", __func__, rc);
rc = -EIO;
} else
rbu_data.entry_created = 1;
spin_lock(&rbu_data.lock);
}
} else {
printk(KERN_WARNING "dell_rbu: image_type is invalid\n");
spin_unlock(&rbu_data.lock);
return -EINVAL;
}
/* we must free all previous allocations */
packet_empty_list();
img_update_free();
spin_unlock(&rbu_data.lock);
return rc;
}
static __exit void dcdrbu_exit(void)
{
spin_lock(&rbu_data.lock);
packet_empty_list();
img_update_free();
spin_unlock(&rbu_data.lock);
platform_device_unregister(rbu_device);
}
static void callbackfn_rbu(const struct firmware *fw, void *context)
{
int rc = 0;
if (!fw || !fw->size) {
rbu_data.entry_created = 0;
return;
}
spin_lock(&rbu_data.lock);
if (!strcmp(image_type, "mono")) {
if (!img_update_realloc(fw->size))
memcpy(rbu_data.image_update_buffer,
fw->data, fw->size);
} else if (!strcmp(image_type, "packet")) {
/*
* we need to free previous packets if a
* new hunk of packets needs to be downloaded
*/
packet_empty_list();
if (packetize_data(fw->data, fw->size))
/* Incase something goes wrong when we are
* in middle of packetizing the data, we
* need to free up whatever packets might
* have been created before we quit.
*/
packet_empty_list();
} else
pr_debug("invalid image type specified.\n");
spin_unlock(&rbu_data.lock);
rc = request_firmware_nowait(THIS_MODULE, FW_ACTION_NOHOTPLUG,
"dell_rbu", &rbu_device->dev, &context, callbackfn_rbu);
if (rc)
printk(KERN_ERR
"dell_rbu:%s request_firmware_nowait failed"
" %d\n", __FUNCTION__, rc);
else
rbu_data.entry_created = 1;
}
static ssize_t write_rbu_packet_size(struct kobject *kobj, char *buffer,
loff_t pos, size_t count)
{
unsigned long temp;
spin_lock(&rbu_data.lock);
packet_empty_list();
sscanf(buffer, "%lu", &temp);
if (temp < 0xffffffff)
rbu_data.packetsize = temp;
spin_unlock(&rbu_data.lock);
return count;
}