linux-kernel - Re: [PATCH LINUX v3 02/10] tty: xuartps: Use spinlock to serialize HW access

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Message-ID: <56631957.3050302@hurleysoftware.com>
Date:	Sat, 5 Dec 2015 12:05:27 -0500
From:	Peter Hurley <peter@...leysoftware.com>
To:	Soren Brinkmann <soren.brinkmann@...inx.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	Jiri Slaby <jslaby@...e.com>,
	Michal Simek <michal.simek@...inx.com>,
	linux-serial@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH LINUX v3 02/10] tty: xuartps: Use spinlock to serialize HW
 access

On 11/21/2015 09:59 PM, Soren Brinkmann wrote:
> Instead of disabling the IRQ, use the spin lock to serialize accesses to
> the HW. This protects the driver from interference of non-IRQ callbacks
> with each other and makes the driver more consistent in its
> serialization method.

Reviewed-by: Peter Hurley <peter@...leysoftware.com>

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