Merge master.kernel.org:/home/rmk/linux-2.6-serial

2 files changed, 38 insertions, 36 deletions

diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h
index cee302aefdb7..73b464f0926a 100644
--- a/include/linux/serial_8250.h
+++ b/include/linux/serial_8250.h
@@ -26,7 +26,7 @@ struct plat_serial8250_port {
 	unsigned char	regshift;	/* register shift */
 	unsigned char	iotype;		/* UPIO_* */
 	unsigned char	hub6;
-	unsigned int	flags;		/* UPF_* flags */
+	upf_t		flags;		/* UPF_* flags */
 };
 
 /*
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index ec351005bf9d..4041122dabfc 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -203,6 +203,8 @@ struct uart_icount {
 	__u32	buf_overrun;
 };
 
+typedef unsigned int __bitwise__ upf_t;
+
 struct uart_port {
 	spinlock_t		lock;			/* port lock */
 	unsigned int		iobase;			/* in/out[bwl] */
@@ -230,36 +232,34 @@ struct uart_port {
 	unsigned long		sysrq;			/* sysrq timeout */
 #endif
 
-	unsigned int		flags;
-
-#define UPF_FOURPORT		(1 << 1)
-#define UPF_SAK			(1 << 2)
-#define UPF_SPD_MASK		(0x1030)
-#define UPF_SPD_HI		(0x0010)
-#define UPF_SPD_VHI		(0x0020)
-#define UPF_SPD_CUST		(0x0030)
-#define UPF_SPD_SHI		(0x1000)
-#define UPF_SPD_WARP		(0x1010)
-#define UPF_SKIP_TEST		(1 << 6)
-#define UPF_AUTO_IRQ		(1 << 7)
-#define UPF_HARDPPS_CD		(1 << 11)
-#define UPF_LOW_LATENCY		(1 << 13)
-#define UPF_BUGGY_UART		(1 << 14)
-#define UPF_AUTOPROBE		(1 << 15)
-#define UPF_MAGIC_MULTIPLIER	(1 << 16)
-#define UPF_BOOT_ONLYMCA	(1 << 22)
-#define UPF_CONS_FLOW		(1 << 23)
-#define UPF_SHARE_IRQ		(1 << 24)
-#define UPF_BOOT_AUTOCONF	(1 << 28)
-#define UPF_IOREMAP		(1 << 31)
-
-#define UPF_CHANGE_MASK		(0x17fff)
-#define UPF_USR_MASK		(UPF_SPD_MASK|UPF_LOW_LATENCY)
+	upf_t			flags;
+
+#define UPF_FOURPORT		((__force upf_t) (1 << 1))
+#define UPF_SAK			((__force upf_t) (1 << 2))
+#define UPF_SPD_MASK		((__force upf_t) (0x1030))
+#define UPF_SPD_HI		((__force upf_t) (0x0010))
+#define UPF_SPD_VHI		((__force upf_t) (0x0020))
+#define UPF_SPD_CUST		((__force upf_t) (0x0030))
+#define UPF_SPD_SHI		((__force upf_t) (0x1000))
+#define UPF_SPD_WARP		((__force upf_t) (0x1010))
+#define UPF_SKIP_TEST		((__force upf_t) (1 << 6))
+#define UPF_AUTO_IRQ		((__force upf_t) (1 << 7))
+#define UPF_HARDPPS_CD		((__force upf_t) (1 << 11))
+#define UPF_LOW_LATENCY		((__force upf_t) (1 << 13))
+#define UPF_BUGGY_UART		((__force upf_t) (1 << 14))
+#define UPF_MAGIC_MULTIPLIER	((__force upf_t) (1 << 16))
+#define UPF_CONS_FLOW		((__force upf_t) (1 << 23))
+#define UPF_SHARE_IRQ		((__force upf_t) (1 << 24))
+#define UPF_BOOT_AUTOCONF	((__force upf_t) (1 << 28))
+#define UPF_IOREMAP		((__force upf_t) (1 << 31))
+
+#define UPF_CHANGE_MASK		((__force upf_t) (0x17fff))
+#define UPF_USR_MASK		((__force upf_t) (UPF_SPD_MASK|UPF_LOW_LATENCY))
 
 	unsigned int		mctrl;			/* current modem ctrl settings */
 	unsigned int		timeout;		/* character-based timeout */
 	unsigned int		type;			/* port type */
-	struct uart_ops		*ops;
+	const struct uart_ops	*ops;
 	unsigned int		custom_divisor;
 	unsigned int		line;			/* port index */
 	unsigned long		mapbase;		/* for ioremap */
@@ -289,6 +289,9 @@ struct uart_state {
 };
 
 #define UART_XMIT_SIZE	PAGE_SIZE
+
+typedef unsigned int __bitwise__ uif_t;
+
 /*
  * This is the state information which is only valid when the port
  * is open; it may be freed by the core driver once the device has
@@ -298,17 +301,16 @@ struct uart_state {
 struct uart_info {
 	struct tty_struct	*tty;
 	struct circ_buf		xmit;
-	unsigned int		flags;
+	uif_t			flags;
 
 /*
- * These are the flags that specific to info->flags, and reflect our
- * internal state.  They can not be accessed via port->flags.  Low
- * level drivers must not change these, but may query them instead.
+ * Definitions for info->flags.  These are _private_ to serial_core, and
+ * are specific to this structure.  They may be queried by low level drivers.
  */
-#define UIF_CHECK_CD		(1 << 25)
-#define UIF_CTS_FLOW		(1 << 26)
-#define UIF_NORMAL_ACTIVE	(1 << 29)
-#define UIF_INITIALIZED		(1 << 31)
+#define UIF_CHECK_CD		((__force uif_t) (1 << 25))
+#define UIF_CTS_FLOW		((__force uif_t) (1 << 26))
+#define UIF_NORMAL_ACTIVE	((__force uif_t) (1 << 29))
+#define UIF_INITIALIZED		((__force uif_t) (1 << 31))
 
 	int			blocked_open;
 
@@ -430,7 +432,7 @@ static inline int uart_handle_break(struct uart_port *port)
 		port->sysrq = 0;
 	}
 #endif
-	if (info->flags & UPF_SAK)
+	if (port->flags & UPF_SAK)
 		do_SAK(info->tty);
 	return 0;
 }