linux-kernel - Re: [PATCH] uas: replace WARN_ON_ONCE() with assert_spin

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Message-ID: <20140811082811.GC1422@kroah.com>
Date:	Mon, 11 Aug 2014 16:28:11 +0800
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Sanjeev Sharma <sanjeev_sharma@...tor.com>
Cc:	hdegoede@...hat.com, kraxel@...hat.com,
	mdharm-usb@...-eyed-alien.net, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org
Subject: Re: [PATCH] uas: replace WARN_ON_ONCE() with assert_spin_locked().

On Mon, Aug 11, 2014 at 01:29:26PM +0530, Sanjeev Sharma wrote:
> spin_is_locked() always return false in uniprocessor configuration

Really?  On what processor type?  I don't see that being the case on a
few processors, but I didn't check them all, or I might be totally
confused with all of the arch_spin_is_locked() definitions in the tree.

> and therefore it
> would be advise to repalce with assert_spin_locked().

This implies that all uses of this function is wrong and should be
replaced and removed, right?

thanks,

greg k-h
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