From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Wed, 22 Dec 2010 17:16:09 +0000 (+0000)
Subject: ARM: PL011: Ensure IRQs are disabled in UART interrupt handler
X-Git-Tag: v2.6.38-rc1~471^2~4^3~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=963cc981af620c7c07b5f6d1ab998b639e90ecb1;p=pandora-kernel.git

ARM: PL011: Ensure IRQs are disabled in UART interrupt handler

As the DMA support introduces a separate interrupt-time callback, our
interrupt handler will not be the only handler which takes the port
lock, so we need to ensure that IRQs are disabled.  We must use the
_irqsave variant so we don't inadvertently enable interrupts.

Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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