NULL
};
-/* declares a char buffer[64] _dbuf, copies data from
- * _b with length _l into it and ensures that _dbuf ends
- * with a \0 character.
- */
-#define DECLARE_BUF_AS_STRING(_dbuf, _b, _l) \
- char _dbuf[64]; int dlen = (_l) < 0 ? 0 : (_l); \
- if (dlen >= sizeof(_dbuf)) dlen = sizeof(_dbuf)-1; \
- memcpy(_dbuf, _b, dlen); _dbuf[dlen] = 0
-
static ssize_t kobj_pkt_show(struct kobject *kobj,
struct attribute *attr, char *data)
{
{
struct pktcdvd_device *pd = to_pktcdvdkobj(kobj)->pd;
int val;
- DECLARE_BUF_AS_STRING(dbuf, data, len); /* ensure sscanf scans a string */
- if (strcmp(attr->name, "reset") == 0 && dlen > 0) {
+ if (strcmp(attr->name, "reset") == 0 && len > 0) {
pd->stats.pkt_started = 0;
pd->stats.pkt_ended = 0;
pd->stats.secs_w = 0;
pd->stats.secs_r = 0;
} else if (strcmp(attr->name, "congestion_off") == 0
- && sscanf(dbuf, "%d", &val) == 1) {
+ && sscanf(data, "%d", &val) == 1) {
spin_lock(&pd->lock);
pd->write_congestion_off = val;
init_write_congestion_marks(&pd->write_congestion_off,
spin_unlock(&pd->lock);
} else if (strcmp(attr->name, "congestion_on") == 0
- && sscanf(dbuf, "%d", &val) == 1) {
+ && sscanf(data, "%d", &val) == 1) {
spin_lock(&pd->lock);
pd->write_congestion_on = val;
init_write_congestion_marks(&pd->write_congestion_off,
size_t count)
{
unsigned int major, minor;
- DECLARE_BUF_AS_STRING(dbuf, buf, count);
- if (sscanf(dbuf, "%u:%u", &major, &minor) == 2) {
+ if (sscanf(buf, "%u:%u", &major, &minor) == 2) {
pkt_setup_dev(MKDEV(major, minor), NULL);
return count;
}
size_t count)
{
unsigned int major, minor;
- DECLARE_BUF_AS_STRING(dbuf, buf, count);
- if (sscanf(dbuf, "%u:%u", &major, &minor) == 2) {
+ if (sscanf(buf, "%u:%u", &major, &minor) == 2) {
pkt_remove_dev(MKDEV(major, minor));
return count;
}
return single_open(file, pkt_debugfs_seq_show, inode->i_private);
}
-static struct file_operations debug_fops = {
+static const struct file_operations debug_fops = {
.open = pkt_debugfs_fops_open,
.read = seq_read,
.llseek = seq_lseek,
*/
static int pkt_generic_packet(struct pktcdvd_device *pd, struct packet_command *cgc)
{
- char sense[SCSI_SENSE_BUFFERSIZE];
- request_queue_t *q;
+ request_queue_t *q = bdev_get_queue(pd->bdev);
struct request *rq;
- DECLARE_COMPLETION_ONSTACK(wait);
- int err = 0;
+ int ret = 0;
- q = bdev_get_queue(pd->bdev);
+ rq = blk_get_request(q, (cgc->data_direction == CGC_DATA_WRITE) ?
+ WRITE : READ, __GFP_WAIT);
+
+ if (cgc->buflen) {
+ if (blk_rq_map_kern(q, rq, cgc->buffer, cgc->buflen, __GFP_WAIT))
+ goto out;
+ }
+
+ rq->cmd_len = COMMAND_SIZE(rq->cmd[0]);
+ memcpy(rq->cmd, cgc->cmd, CDROM_PACKET_SIZE);
+ if (sizeof(rq->cmd) > CDROM_PACKET_SIZE)
+ memset(rq->cmd + CDROM_PACKET_SIZE, 0, sizeof(rq->cmd) - CDROM_PACKET_SIZE);
- rq = blk_get_request(q, (cgc->data_direction == CGC_DATA_WRITE) ? WRITE : READ,
- __GFP_WAIT);
- rq->errors = 0;
- rq->rq_disk = pd->bdev->bd_disk;
- rq->bio = NULL;
- rq->buffer = NULL;
rq->timeout = 60*HZ;
- rq->data = cgc->buffer;
- rq->data_len = cgc->buflen;
- rq->sense = sense;
- memset(sense, 0, sizeof(sense));
- rq->sense_len = 0;
rq->cmd_type = REQ_TYPE_BLOCK_PC;
rq->cmd_flags |= REQ_HARDBARRIER;
if (cgc->quiet)
rq->cmd_flags |= REQ_QUIET;
- memcpy(rq->cmd, cgc->cmd, CDROM_PACKET_SIZE);
- if (sizeof(rq->cmd) > CDROM_PACKET_SIZE)
- memset(rq->cmd + CDROM_PACKET_SIZE, 0, sizeof(rq->cmd) - CDROM_PACKET_SIZE);
- rq->cmd_len = COMMAND_SIZE(rq->cmd[0]);
-
- rq->ref_count++;
- rq->end_io_data = &wait;
- rq->end_io = blk_end_sync_rq;
- elv_add_request(q, rq, ELEVATOR_INSERT_BACK, 1);
- generic_unplug_device(q);
- wait_for_completion(&wait);
-
- if (rq->errors)
- err = -EIO;
+ blk_execute_rq(rq->q, pd->bdev->bd_disk, rq, 0);
+ ret = rq->errors;
+out:
blk_put_request(rq);
- return err;
+ return ret;
}
/*
&& pd->bio_queue_size <= pd->write_congestion_off);
spin_unlock(&pd->lock);
if (wakeup)
- blk_clear_queue_congested(pd->disk->queue, WRITE);
+ clear_bdi_congested(&pd->disk->queue->backing_dev_info, WRITE);
pkt->sleep_time = max(PACKET_WAIT_TIME, 1);
pkt_set_state(pkt, PACKET_WAITING_STATE);
spin_lock(&pd->lock);
if (pd->write_congestion_on > 0
&& pd->bio_queue_size >= pd->write_congestion_on) {
- blk_set_queue_congested(q, WRITE);
+ set_bdi_congested(&q->backing_dev_info, WRITE);
do {
spin_unlock(&pd->lock);
congestion_wait(WRITE, HZ);
return single_open(file, pkt_seq_show, PDE(inode)->data);
}
-static struct file_operations pkt_proc_fops = {
+static const struct file_operations pkt_proc_fops = {
.open = pkt_seq_open,
.read = seq_read,
.llseek = seq_lseek,
}
-static struct file_operations pkt_ctl_fops = {
+static const struct file_operations pkt_ctl_fops = {
.ioctl = pkt_ctl_ioctl,
.owner = THIS_MODULE,
};