linux-kernel - [PATCH 04/13] serial: fix UART_IIR

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Date:	Wed, 23 Apr 2014 09:58:28 -0500
From:	Felipe Balbi <balbi@...com>
To:	Greg KH <gregkh@...uxfoundation.org>
CC:	<marcel@...tmann.org>, <gustavo@...ovan.org>,
	<johan.hedberg@...il.com>, <jslaby@...e.cz>,
	<grant.likely@...aro.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	<linux-bluetooth@...r.kernel.org>, <linux-serial@...r.kernel.org>,
	<devicetree@...r.kernel.org>,
	Linux OMAP Mailing List <linux-omap@...r.kernel.org>,
	Tony Lindgren <tony@...mide.com>, Felipe Balbi <balbi@...com>
Subject: [PATCH 04/13] serial: fix UART_IIR_ID

UART IRQ Identification bitfield is 3
bits long (bits 3:1) but current mask only
masks 2 bits. Fix it.

Signed-off-by: Felipe Balbi <balbi@...com>
---
 include/uapi/linux/serial_reg.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/uapi/linux/serial_reg.h b/include/uapi/linux/serial_reg.h
index e632260..99b4705 100644
--- a/include/uapi/linux/serial_reg.h
+++ b/include/uapi/linux/serial_reg.h
@@ -32,7 +32,7 @@
 
 #define UART_IIR	2	/* In:  Interrupt ID Register */
 #define UART_IIR_NO_INT		0x01 /* No interrupts pending */
-#define UART_IIR_ID		0x06 /* Mask for the interrupt ID */
+#define UART_IIR_ID		0x0e /* Mask for the interrupt ID */
 #define UART_IIR_MSI		0x00 /* Modem status interrupt */
 #define UART_IIR_THRI		0x02 /* Transmitter holding register empty */
 #define UART_IIR_RDI		0x04 /* Receiver data interrupt */
-- 
1.9.2.459.g68773ac

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