diff options
| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2012-10-29 17:09:53 (GMT) |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2012-10-31 13:18:52 (GMT) |
| commit | 124dafde8f8174caf5cef1c3eaba001657d66f4f (patch) | |
| tree | 6fc02aec00e90e333db788691b48910ddb38e34c /drivers/usb/dwc3/core.c | |
| parent | 6f115e45a09846ae84154735e6215622e2e8e535 (diff) | |
| download | linux-fsl-qoriq-124dafde8f8174caf5cef1c3eaba001657d66f4f.tar.xz | |
usb: dwc3: remove custom unique id handling
The lockless implementation of the unique id is quite impressive (:P)
but dirver's core can handle it, we can remove it and make our code a
little smaller.
Cc: Anton Tikhomirov <av.tikhomirov@samsung.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/dwc3/core.c')
| -rw-r--r-- | drivers/usb/dwc3/core.c | 39 |
1 files changed, 0 insertions, 39 deletions
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index b923183..d8d327a 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -66,45 +66,6 @@ MODULE_PARM_DESC(maximum_speed, "Maximum supported speed."); /* -------------------------------------------------------------------------- */ -#define DWC3_DEVS_POSSIBLE 32 - -static DECLARE_BITMAP(dwc3_devs, DWC3_DEVS_POSSIBLE); - -int dwc3_get_device_id(void) -{ - int id; - -again: - id = find_first_zero_bit(dwc3_devs, DWC3_DEVS_POSSIBLE); - if (id < DWC3_DEVS_POSSIBLE) { - int old; - - old = test_and_set_bit(id, dwc3_devs); - if (old) - goto again; - } else { - pr_err("dwc3: no space for new device\n"); - id = -ENOMEM; - } - - return id; -} -EXPORT_SYMBOL_GPL(dwc3_get_device_id); - -void dwc3_put_device_id(int id) -{ - int ret; - - if (id < 0) - return; - - ret = test_bit(id, dwc3_devs); - WARN(!ret, "dwc3: ID %d not in use\n", id); - smp_mb__before_clear_bit(); - clear_bit(id, dwc3_devs); -} -EXPORT_SYMBOL_GPL(dwc3_put_device_id); - void dwc3_set_mode(struct dwc3 *dwc, u32 mode) { u32 reg; |