Re: [PATCH 1/1] USB: inode.c: fix unbalanced spin_lock in ep0_write

[Al Viro]

On Fri, Dec 11, 2015 at 08:56:26PM +0100, David Eccher wrote:
> Fix bad unlock balance: ep0_write enter with the locks locked from inode.c:1769,
> hence it must exit with spinlock held to avoid double unlock in dev_config.

*Ugh*

Just take that spinlock before the if (retval < 0) and don't drop it after
clear_req(), then...
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