From: Sonic Zhang <sonic.zhang@analog.com>
Date: Tue, 6 Dec 2011 07:16:33 +0000 (+0800)
Subject: tty: bfin-sport-uart: Rx interrupt is not called always with irq disabled.
X-Git-Tag: firefly_0821_release~3680^2~3806^2~28
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=07143eaefd025098089edee7047714f6604a4a21;p=firefly-linux-kernel-4.4.55.git

tty: bfin-sport-uart: Rx interrupt is not called always with irq disabled.

Replace local_irq_disable by local_irq_save.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/tty/serial/bfin_sport_uart.h b/drivers/tty/serial/bfin_sport_uart.h
index 6d06ce1d5675..e4510ea135ce 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))