blktrace: use cpu_clock() instead of sched_clock()

[pandora-kernel.git] / block / bsg.c

diff --git a/block/bsg.c b/block/bsg.c
index f2992e7..3b2f052 100644 (file)
--- a/block/bsg.c
+++ b/block/bsg.c
@@ -37,7 +37,7 @@
 #define BSG_VERSION    "0.4"
 
 struct bsg_device {
-       request_queue_t *queue;
+       struct request_queue *queue;
        spinlock_t lock;
        struct list_head busy_list;
        struct list_head done_list;
@@ -180,7 +180,7 @@ unlock:
        return ret;
 }
 
-static int blk_fill_sgv4_hdr_rq(request_queue_t *q, struct request *rq,
+static int blk_fill_sgv4_hdr_rq(struct request_queue *q, struct request *rq,
                                struct sg_io_v4 *hdr, int has_write_perm)
 {
        memset(rq->cmd, 0, BLK_MAX_CDB); /* ATAPI hates garbage after CDB */
@@ -214,7 +214,7 @@ static int blk_fill_sgv4_hdr_rq(request_queue_t *q, struct request *rq,
  * Check if sg_io_v4 from user is allowed and valid
  */
 static int
-bsg_validate_sgv4_hdr(request_queue_t *q, struct sg_io_v4 *hdr, int *rw)
+bsg_validate_sgv4_hdr(struct request_queue *q, struct sg_io_v4 *hdr, int *rw)
 {
        int ret = 0;
 
@@ -250,7 +250,7 @@ bsg_validate_sgv4_hdr(request_queue_t *q, struct sg_io_v4 *hdr, int *rw)
 static struct request *
 bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr)
 {
-       request_queue_t *q = bd->queue;
+       struct request_queue *q = bd->queue;
        struct request *rq, *next_rq = NULL;
        int ret, rw;
        unsigned int dxfer_len;
@@ -345,7 +345,7 @@ static void bsg_rq_end_io(struct request *rq, int uptodate)
  * do final setup of a 'bc' and submit the matching 'rq' to the block
  * layer for io
  */
-static void bsg_add_command(struct bsg_device *bd, request_queue_t *q,
+static void bsg_add_command(struct bsg_device *bd, struct request_queue *q,
                            struct bsg_command *bc, struct request *rq)
 {
        rq->sense = bc->sense;
@@ -611,7 +611,7 @@ static int __bsg_write(struct bsg_device *bd, const char __user *buf,
        bc = NULL;
        ret = 0;
        while (nr_commands) {
-               request_queue_t *q = bd->queue;
+               struct request_queue *q = bd->queue;
 
                bc = bsg_alloc_command(bd);
                if (IS_ERR(bc)) {
@@ -932,24 +932,34 @@ void bsg_unregister_queue(struct request_queue *q)
 {
        struct bsg_class_device *bcd = &q->bsg_dev;
 
-       WARN_ON(!bcd->class_dev);
+       if (!bcd->class_dev)
+               return;
 
        mutex_lock(&bsg_mutex);
        sysfs_remove_link(&q->kobj, "bsg");
-       class_device_destroy(bsg_class, MKDEV(bsg_major, bcd->minor));
+       class_device_unregister(bcd->class_dev);
+       put_device(bcd->dev);
        bcd->class_dev = NULL;
+       bcd->dev = NULL;
        list_del_init(&bcd->list);
        bsg_device_nr--;
        mutex_unlock(&bsg_mutex);
 }
 EXPORT_SYMBOL_GPL(bsg_unregister_queue);
 
-int bsg_register_queue(struct request_queue *q, const char *name)
+int bsg_register_queue(struct request_queue *q, struct device *gdev,
+                      const char *name)
 {
        struct bsg_class_device *bcd, *__bcd;
        dev_t dev;
        int ret = -EMFILE;
        struct class_device *class_dev = NULL;
+       const char *devname;
+
+       if (name)
+               devname = name;
+       else
+               devname = gdev->bus_id;
 
        /*
         * we need a proper transport to send commands, not a stacked device
@@ -982,18 +992,20 @@ retry:
                bsg_minor_idx = 0;
 
        bcd->queue = q;
+       bcd->dev = get_device(gdev);
        dev = MKDEV(bsg_major, bcd->minor);
-       class_dev = class_device_create(bsg_class, NULL, dev, bcd->dev, "%s", name);
+       class_dev = class_device_create(bsg_class, NULL, dev, gdev, "%s",
+                                       devname);
        if (IS_ERR(class_dev)) {
                ret = PTR_ERR(class_dev);
-               goto err;
+               goto err_put;
        }
        bcd->class_dev = class_dev;
 
        if (q->kobj.sd) {
                ret = sysfs_create_link(&q->kobj, &bcd->class_dev->kobj, "bsg");
                if (ret)
-                       goto err;
+                       goto err_unregister;
        }
 
        list_add_tail(&bcd->list, &bsg_class_list);
@@ -1001,37 +1013,17 @@ retry:
 
        mutex_unlock(&bsg_mutex);
        return 0;
+
+err_unregister:
+       class_device_unregister(class_dev);
+err_put:
+       put_device(gdev);
 err:
-       if (class_dev)
-               class_device_destroy(bsg_class, MKDEV(bsg_major, bcd->minor));
        mutex_unlock(&bsg_mutex);
        return ret;
 }
 EXPORT_SYMBOL_GPL(bsg_register_queue);
 
-static int bsg_add(struct class_device *cl_dev, struct class_interface *cl_intf)
-{
-       int ret;
-       struct scsi_device *sdp = to_scsi_device(cl_dev->dev);
-       struct request_queue *rq = sdp->request_queue;
-
-       if (rq->kobj.parent)
-               ret = bsg_register_queue(rq, kobject_name(rq->kobj.parent));
-       else
-               ret = bsg_register_queue(rq, kobject_name(&sdp->sdev_gendev.kobj));
-       return ret;
-}
-
-static void bsg_remove(struct class_device *cl_dev, struct class_interface *cl_intf)
-{
-       bsg_unregister_queue(to_scsi_device(cl_dev->dev)->request_queue);
-}
-
-static struct class_interface bsg_intf = {
-       .add    = bsg_add,
-       .remove = bsg_remove,
-};
-
 static struct cdev bsg_cdev = {
        .kobj   = {.name = "bsg", },
        .owner  = THIS_MODULE,
@@ -1069,16 +1061,9 @@ static int __init bsg_init(void)
        if (ret)
                goto unregister_chrdev;
 
-       ret = scsi_register_interface(&bsg_intf);
-       if (ret)
-               goto remove_cdev;
-
        printk(KERN_INFO BSG_DESCRIPTION " version " BSG_VERSION
               " loaded (major %d)\n", bsg_major);
        return 0;
-remove_cdev:
-       printk(KERN_ERR "bsg: failed register scsi interface %d\n", ret);
-       cdev_del(&bsg_cdev);
 unregister_chrdev:
        unregister_chrdev_region(MKDEV(bsg_major, 0), BSG_MAX_DEVS);
 destroy_bsg_class: