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Diffstat (limited to 'block/bsg.c')
-rw-r--r--block/bsg.c26
1 files changed, 16 insertions, 10 deletions
diff --git a/block/bsg.c b/block/bsg.c
index 7eca43f33d7f..1a9396a3b7d7 100644
--- a/block/bsg.c
+++ b/block/bsg.c
@@ -39,7 +39,7 @@ static inline struct bsg_device *to_bsg_device(struct inode *inode)
#define BSG_MAX_DEVS 32768
static DEFINE_IDA(bsg_minor_ida);
-static struct class *bsg_class;
+static const struct class bsg_class;
static int bsg_major;
static unsigned int bsg_timeout(struct bsg_device *bd, struct sg_io_v4 *hdr)
@@ -54,7 +54,8 @@ static unsigned int bsg_timeout(struct bsg_device *bd, struct sg_io_v4 *hdr)
return max_t(unsigned int, timeout, BLK_MIN_SG_TIMEOUT);
}
-static int bsg_sg_io(struct bsg_device *bd, fmode_t mode, void __user *uarg)
+static int bsg_sg_io(struct bsg_device *bd, bool open_for_write,
+ void __user *uarg)
{
struct sg_io_v4 hdr;
int ret;
@@ -63,7 +64,8 @@ static int bsg_sg_io(struct bsg_device *bd, fmode_t mode, void __user *uarg)
return -EFAULT;
if (hdr.guard != 'Q')
return -EINVAL;
- ret = bd->sg_io_fn(bd->queue, &hdr, mode, bsg_timeout(bd, &hdr));
+ ret = bd->sg_io_fn(bd->queue, &hdr, open_for_write,
+ bsg_timeout(bd, &hdr));
if (!ret && copy_to_user(uarg, &hdr, sizeof(hdr)))
return -EFAULT;
return ret;
@@ -146,7 +148,7 @@ static long bsg_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
case SG_EMULATED_HOST:
return put_user(1, intp);
case SG_IO:
- return bsg_sg_io(bd, file->f_mode, uarg);
+ return bsg_sg_io(bd, file->f_mode & FMODE_WRITE, uarg);
case SCSI_IOCTL_SEND_COMMAND:
pr_warn_ratelimited("%s: calling unsupported SCSI_IOCTL_SEND_COMMAND\n",
current->comm);
@@ -206,7 +208,7 @@ struct bsg_device *bsg_register_queue(struct request_queue *q,
return ERR_PTR(ret);
}
bd->device.devt = MKDEV(bsg_major, ret);
- bd->device.class = bsg_class;
+ bd->device.class = &bsg_class;
bd->device.parent = parent;
bd->device.release = bsg_device_release;
dev_set_name(&bd->device, "%s", name);
@@ -240,15 +242,19 @@ static char *bsg_devnode(const struct device *dev, umode_t *mode)
return kasprintf(GFP_KERNEL, "bsg/%s", dev_name(dev));
}
+static const struct class bsg_class = {
+ .name = "bsg",
+ .devnode = bsg_devnode,
+};
+
static int __init bsg_init(void)
{
dev_t devid;
int ret;
- bsg_class = class_create("bsg");
- if (IS_ERR(bsg_class))
- return PTR_ERR(bsg_class);
- bsg_class->devnode = bsg_devnode;
+ ret = class_register(&bsg_class);
+ if (ret)
+ return ret;
ret = alloc_chrdev_region(&devid, 0, BSG_MAX_DEVS, "bsg");
if (ret)
@@ -260,7 +266,7 @@ static int __init bsg_init(void)
return 0;
destroy_bsg_class:
- class_destroy(bsg_class);
+ class_unregister(&bsg_class);
return ret;
}