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usb: dwc3: core: memory ordering fix in close

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As a bitmap is used for free/used. As a device freed
all memory operations must be scheduled before the bitmap
is manipulated.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Oliver Neukum 2012-08-26 21:34:19 +02:00 committed by Felipe Balbi
parent c6f83f386c
commit 2a540edf7b
1 changed files with 1 additions and 0 deletions
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drivers/usb/dwc3/core.c
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@ -99,6 +99,7 @@ void dwc3_put_device_id(int id)
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);