diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/i2c/busses/scx200_acb.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/i2c/busses/scx200_acb.c b/drivers/i2c/busses/scx200_acb.c index 517a050625f1..02150bb25d43 100644 --- a/drivers/i2c/busses/scx200_acb.c +++ b/drivers/i2c/busses/scx200_acb.c @@ -378,6 +378,7 @@ static struct i2c_algorithm scx200_acb_algorithm = { }; static struct scx200_acb_iface *scx200_acb_list; +static DECLARE_MUTEX(scx200_acb_list_mutex); static int scx200_acb_probe(struct scx200_acb_iface *iface) { @@ -463,10 +464,10 @@ static int __init scx200_acb_create(int base, int index) goto errout_release; } - lock_kernel(); + down(&scx200_acb_list_mutex); iface->next = scx200_acb_list; scx200_acb_list = iface; - unlock_kernel(); + up(&scx200_acb_list_mutex); return 0; @@ -509,17 +510,17 @@ static void __exit scx200_acb_cleanup(void) { struct scx200_acb_iface *iface; - lock_kernel(); + down(&scx200_acb_list_mutex); while ((iface = scx200_acb_list) != NULL) { scx200_acb_list = iface->next; - unlock_kernel(); + up(&scx200_acb_list_mutex); i2c_del_adapter(&iface->adapter); release_region(iface->base, 8); kfree(iface); - lock_kernel(); + down(&scx200_acb_list_mutex); } - unlock_kernel(); + up(&scx200_acb_list_mutex); } module_init(scx200_acb_init); |