9 files changed, 66 insertions, 63 deletions

diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 233ea8107038..5449d2f4a1ef 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -416,9 +416,6 @@ extern int __kernel_text_address(unsigned long addr);
 extern int kernel_text_address(unsigned long addr);
 extern int func_ptr_is_kernel_text(void *ptr);
 
-struct pid;
-extern struct pid *session_of_pgrp(struct pid *pgrp);
-
 unsigned long int_sqrt(unsigned long);
 
 extern void bust_spinlocks(int yes);
diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h
index 3df10d5f154b..e02acf0a0ec9 100644
--- a/include/linux/serial_8250.h
+++ b/include/linux/serial_8250.h
@@ -97,13 +97,10 @@ struct uart_8250_port {
         unsigned char           msr_saved_flags;
 
         struct uart_8250_dma    *dma;
-        struct serial_rs485     rs485;
 
         /* 8250 specific callbacks */
         int                     (*dl_read)(struct uart_8250_port *);
         void                    (*dl_write)(struct uart_8250_port *, int);
-        int                     (*rs485_config)(struct uart_8250_port *,
-                                                struct serial_rs485 *rs485);
 };
 
 static inline struct uart_8250_port *up_to_u8250p(struct uart_port *up)
diff --git a/include/linux/serial_bcm63xx.h b/include/linux/serial_bcm63xx.h
index a80aa1a5bee2..570e964dc899 100644
--- a/include/linux/serial_bcm63xx.h
+++ b/include/linux/serial_bcm63xx.h
@@ -116,6 +116,4 @@
                                         UART_FIFO_PARERR_MASK |         \
                                         UART_FIFO_BRKDET_MASK)
 
-#define UART_REG_SIZE                   24
-
 #endif /* _LINUX_SERIAL_BCM63XX_H */
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index 21c2e05c1bc3..057038cf2788 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -63,7 +63,7 @@ struct uart_ops {
         void            (*flush_buffer)(struct uart_port *);
         void            (*set_termios)(struct uart_port *, struct ktermios *new,
                                        struct ktermios *old);
-        void            (*set_ldisc)(struct uart_port *, int new);
+        void            (*set_ldisc)(struct uart_port *, struct ktermios *);
         void            (*pm)(struct uart_port *, unsigned int state,
                               unsigned int oldstate);
 
@@ -131,6 +131,8 @@ struct uart_port {
         void                    (*pm)(struct uart_port *, unsigned int state,
                                       unsigned int old);
         void                    (*handle_break)(struct uart_port *);
+        int                     (*rs485_config)(struct uart_port *,
+                                                struct serial_rs485 *rs485);
         unsigned int            irq;                    /* irq number */
         unsigned long           irqflags;               /* irq flags  */
         unsigned int            uartclk;                /* base uart clock */
@@ -140,12 +142,13 @@ struct uart_port {
         unsigned char           iotype;                 /* io access style */
         unsigned char           unused1;
 
-#define UPIO_PORT               (0)
-#define UPIO_HUB6               (1)
-#define UPIO_MEM                (2)
-#define UPIO_MEM32              (3)
-#define UPIO_AU                 (4)                     /* Au1x00 and RT288x type IO */
-#define UPIO_TSI                (5)                     /* Tsi108/109 type IO */
+#define UPIO_PORT               (0)                     /* 8b I/O port access */
+#define UPIO_HUB6               (1)                     /* Hub6 ISA card */
+#define UPIO_MEM                (2)                     /* 8b MMIO access */
+#define UPIO_MEM32              (3)                     /* 32b little endian */
+#define UPIO_MEM32BE            (4)                     /* 32b big endian */
+#define UPIO_AU                 (5)                     /* Au1x00 and RT288x type IO */
+#define UPIO_TSI                (6)                     /* Tsi108/109 type IO */
 
         unsigned int            read_status_mask;       /* driver specific */
         unsigned int            ignore_status_mask;     /* driver specific */
@@ -160,21 +163,33 @@ struct uart_port {
         /* flags must be updated while holding port mutex */
         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))
+        /*
+         * These flags must be equivalent to the flags defined in
+         * include/uapi/linux/tty_flags.h which are the userspace definitions
+         * assigned from the serial_struct flags in uart_set_info()
+         * [for bit definitions in the UPF_CHANGE_MASK]
+         *
+         * Bits [0..UPF_LAST_USER] are userspace defined/visible/changeable
+         * except bit 15 (UPF_NO_TXEN_TEST) which is masked off.
+         * The remaining bits are serial-core specific and not modifiable by
+         * userspace.
+         */
+#define UPF_FOURPORT            ((__force upf_t) ASYNC_FOURPORT       /* 1  */ )
+#define UPF_SAK                 ((__force upf_t) ASYNC_SAK            /* 2  */ )
+#define UPF_SPD_HI              ((__force upf_t) ASYNC_SPD_HI         /* 4  */ )
+#define UPF_SPD_VHI             ((__force upf_t) ASYNC_SPD_VHI        /* 5  */ )
+#define UPF_SPD_CUST            ((__force upf_t) ASYNC_SPD_CUST   /* 0x0030 */ )
+#define UPF_SPD_WARP            ((__force upf_t) ASYNC_SPD_WARP   /* 0x1010 */ )
+#define UPF_SPD_MASK            ((__force upf_t) ASYNC_SPD_MASK   /* 0x1030 */ )
+#define UPF_SKIP_TEST           ((__force upf_t) ASYNC_SKIP_TEST      /* 6  */ )
+#define UPF_AUTO_IRQ            ((__force upf_t) ASYNC_AUTO_IRQ       /* 7  */ )
+#define UPF_HARDPPS_CD          ((__force upf_t) ASYNC_HARDPPS_CD     /* 11 */ )
+#define UPF_SPD_SHI             ((__force upf_t) ASYNC_SPD_SHI        /* 12 */ )
+#define UPF_LOW_LATENCY         ((__force upf_t) ASYNC_LOW_LATENCY    /* 13 */ )
+#define UPF_BUGGY_UART          ((__force upf_t) ASYNC_BUGGY_UART     /* 14 */ )
 #define UPF_NO_TXEN_TEST        ((__force upf_t) (1 << 15))
-#define UPF_MAGIC_MULTIPLIER    ((__force upf_t) (1 << 16))
+#define UPF_MAGIC_MULTIPLIER    ((__force upf_t) ASYNC_MAGIC_MULTIPLIER /* 16 */ )
+
 /* Port has hardware-assisted h/w flow control (iow, auto-RTS *not* auto-CTS) */
 #define UPF_HARD_FLOW           ((__force upf_t) (1 << 21))
 /* Port has hardware-assisted s/w flow control */
@@ -190,9 +205,14 @@ struct uart_port {
 #define UPF_DEAD                ((__force upf_t) (1 << 30))
 #define UPF_IOREMAP             ((__force upf_t) (1 << 31))
 
-#define UPF_CHANGE_MASK         ((__force upf_t) (0x17fff))
+#define __UPF_CHANGE_MASK       0x17fff
+#define UPF_CHANGE_MASK         ((__force upf_t) __UPF_CHANGE_MASK)
 #define UPF_USR_MASK            ((__force upf_t) (UPF_SPD_MASK|UPF_LOW_LATENCY))
 
+#if __UPF_CHANGE_MASK > ASYNC_FLAGS
+#error Change mask not equivalent to userspace-visible bit defines
+#endif
+
         /* status must be updated while holding port lock */
         upstat_t                status;
 
@@ -214,6 +234,7 @@ struct uart_port {
         unsigned char           unused[2];
         struct attribute_group  *attr_group;            /* port specific attributes */
         const struct attribute_group **tty_groups;      /* all attributes (serial core use only) */
+        struct serial_rs485     rs485;
         void                    *private_data;          /* generic platform data pointer */
 };
 
@@ -367,7 +388,7 @@ static inline int uart_tx_stopped(struct uart_port *port)
 
 static inline bool uart_cts_enabled(struct uart_port *uport)
 {
-        return uport->status & UPSTAT_CTS_ENABLE;
+        return !!(uport->status & UPSTAT_CTS_ENABLE);