linux-kernel - [PATCH 1/2] tty: bfin-sport-uart: Rx interrupt is not called always with irq disabled.

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Message-ID: <1323155794-14696-1-git-send-email-sonic.adi@gmail.com>
Date:	Tue, 6 Dec 2011 15:16:33 +0800
From:	Sonic Zhang <sonic.adi@...il.com>
To:	Greg Kroah-Hartman <gregkh@...e.de>, <linux-serial@...r.kernel.org>
CC:	LKML <linux-kernel@...r.kernel.org>,
	<uclinux-dist-devel@...ckfin.uclinux.org>,
	Sonic Zhang <sonic.zhang@...log.com>
Subject: [PATCH 1/2] tty: bfin-sport-uart: Rx interrupt is not called always with irq disabled.

From: Sonic Zhang <sonic.zhang@...log.com>

Replace local_irq_disable by local_irq_save.

Signed-off-by: Sonic Zhang <sonic.zhang@...log.com>
---
 drivers/tty/serial/bfin_sport_uart.h |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/tty/serial/bfin_sport_uart.h b/drivers/tty/serial/bfin_sport_uart.h
index 6d06ce1..e4510ea 100644
--- a/drivers/tty/serial/bfin_sport_uart.h
+++ b/drivers/tty/serial/bfin_sport_uart.h
@@ -45,11 +45,12 @@
 #define SPORT_GET_RX32(sport) \
 ({ \
 	unsigned int __ret; \
+	unsigned long flags; \
 	if (ANOMALY_05000473) \
-		local_irq_disable(); \
+		local_irq_save(flags); \
 	__ret = bfin_read32((sport)->port.membase + OFFSET_RX); \
 	if (ANOMALY_05000473) \
-		local_irq_enable(); \
+		local_irq_restore(flags); \
 	__ret; \
 })
 #define SPORT_GET_RCR1(sport)		bfin_read16(((sport)->port.membase + OFFSET_RCR1))
-- 
1.7.0.4


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