Merge upstream kernel changes into 'C/H/S support' branch of libata.

18 files changed, 282 insertions, 407 deletions

diff --git a/drivers/serial/21285.c b/drivers/serial/21285.c
index 33fbda79f35..0b10169961e 100644
--- a/drivers/serial/21285.c
+++ b/drivers/serial/21285.c
@@ -126,18 +126,8 @@ static irqreturn_t serial21285_rx_chars(int irq, void *dev_id, struct pt_regs *r
 				flag = TTY_FRAME;
 		}
 
-		if ((rxs & port->ignore_status_mask) == 0) {
-			tty_insert_flip_char(tty, ch, flag);
-		}
-		if ((rxs & RXSTAT_OVERRUN) &&
-		    tty->flip.count < TTY_FLIPBUF_SIZE) {
-			/*
-			 * Overrun is special, since it's reported
-			 * immediately, and doesn't affect the current
-			 * character.
-			 */
-			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
-		}
+		uart_insert_char(port, rxs, RXSTAT_OVERRUN, ch, flag);
+
 		status = *CSR_UARTFLG;
 	}
 	tty_flip_buffer_push(tty);
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 0d9358608fd..30e8beb7143 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -682,8 +682,6 @@ static void autoconfig_16550a(struct uart_8250_port *up)
 	 * from EXCR1. Switch back to bank 0, change it in MCR. Then
 	 * switch back to bank 2, read it from EXCR1 again and check
 	 * it's changed. If so, set baud_base in EXCR2 to 921600. -- dwmw2
-	 * On PowerPC we don't want to change baud_base, as we have
-	 * a number of different divisors.  -- Tom Rini
 	 */
 	serial_outp(up, UART_LCR, 0);
 	status1 = serial_in(up, UART_MCR);
@@ -699,16 +697,25 @@ static void autoconfig_16550a(struct uart_8250_port *up)
 		serial_outp(up, UART_MCR, status1);
 
 		if ((status2 ^ status1) & UART_MCR_LOOP) {
-#ifndef CONFIG_PPC
+			unsigned short quot;
+
 			serial_outp(up, UART_LCR, 0xE0);
+
+			quot = serial_inp(up, UART_DLM) << 8;
+			quot += serial_inp(up, UART_DLL);
+			quot <<= 3;
+
 			status1 = serial_in(up, 0x04); /* EXCR1 */
 			status1 &= ~0xB0; /* Disable LOCK, mask out PRESL[01] */
 			status1 |= 0x10;  /* 1.625 divisor for baud_base --> 921600 */
 			serial_outp(up, 0x04, status1);
+			
+			serial_outp(up, UART_DLL, quot & 0xff);
+			serial_outp(up, UART_DLM, quot >> 8);
+
 			serial_outp(up, UART_LCR, 0);
-			up->port.uartclk = 921600*16;
-#endif
 
+			up->port.uartclk = 921600*16;
 			up->port.type = PORT_NS16550A;
 			up->capabilities |= UART_NATSEMI;
 			return;
@@ -1122,18 +1129,9 @@ receive_chars(struct uart_8250_port *up, int *status, struct pt_regs *regs)
 		}
 		if (uart_handle_sysrq_char(&up->port, ch, regs))
 			goto ignore_char;
-		if ((lsr & up->port.ignore_status_mask) == 0) {
-			tty_insert_flip_char(tty, ch, flag);
-		}
-		if ((lsr & UART_LSR_OE) &&
-		    tty->flip.count < TTY_FLIPBUF_SIZE) {
-			/*
-			 * Overrun is special, since it's reported
-			 * immediately, and doesn't affect the current
-			 * character.
-			 */
-			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
-		}
+
+		uart_insert_char(&up->port, lsr, UART_LSR_OE, ch, flag);
+
 	ignore_char:
 		lsr = serial_inp(up, UART_LSR);
 	} while ((lsr & UART_LSR_DR) && (max_count-- > 0));
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 6e44b46c9e9..25fcef2c42d 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -753,7 +753,7 @@ config SERIAL_MPC52xx_CONSOLE_BAUD
 
 config SERIAL_ICOM
 	tristate "IBM Multiport Serial Adapter"
-	depends on PPC_ISERIES || PPC_PSERIES
+	depends on PCI && (PPC_ISERIES || PPC_PSERIES)
 	select SERIAL_CORE
 	help
 	  This driver is for a family of multiport serial adapters
@@ -843,4 +843,13 @@ config SERIAL_JSM
           To compile this driver as a module, choose M here: the
           module will be called jsm.
 
+config SERIAL_SGI_IOC4
+	tristate "SGI IOC4 controller serial support"
+	depends on (IA64_GENERIC || IA64_SGI_SN2) && SGI_IOC4
+	select SERIAL_CORE
+	help
+		If you have an SGI Altix with an IOC4 based Base IO card
+		and wish to use the serial ports on this card, say Y.
+		Otherwise, say N.
+
 endmenu
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index 81b77d769b8..8f1cdde7dbe 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -51,4 +51,4 @@ obj-$(CONFIG_ETRAX_SERIAL) += crisv10.o
 obj-$(CONFIG_SERIAL_JSM) += jsm/
 obj-$(CONFIG_SERIAL_TXX9) += serial_txx9.o
 obj-$(CONFIG_SERIAL_VR41XX) += vr41xx_siu.o
-obj-$(CONFIG_BLK_DEV_SGIIOC4) += ioc4_serial.o
+obj-$(CONFIG_SERIAL_SGI_IOC4) += ioc4_serial.o
diff --git a/drivers/serial/amba-pl010.c b/drivers/serial/amba-pl010.c
index f2a5e2933c4..2884b310e54 100644
--- a/drivers/serial/amba-pl010.c
+++ b/drivers/serial/amba-pl010.c
@@ -198,18 +198,8 @@ pl010_rx_chars(struct uart_port *port)
 		if (uart_handle_sysrq_char(port, ch, regs))
 			goto ignore_char;
 
-		if ((rsr & port->ignore_status_mask) == 0) {
-			tty_insert_flip_char(tty, ch, flag);
-		}
-		if ((rsr & UART01x_RSR_OE) &&
-		    tty->flip.count < TTY_FLIPBUF_SIZE) {
-			/*
-			 * Overrun is special, since it's reported
-			 * immediately, and doesn't affect the current
-			 * character
-			 */
-			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
-		}
+		uart_insert_char(port, rsr, UART01x_RSR_OE, ch, flag);
+
 	ignore_char:
 		status = UART_GET_FR(port);
 	}
diff --git a/drivers/serial/amba-pl011.c b/drivers/serial/amba-pl011.c
index d5cbef3fe8b..7db88ee18f7 100644
--- a/drivers/serial/amba-pl011.c
+++ b/drivers/serial/amba-pl011.c
@@ -163,18 +163,8 @@ pl011_rx_chars(struct uart_amba_port *uap)
 		if (uart_handle_sysrq_char(&uap->port, ch, regs))
 			goto ignore_char;
 
-		if ((rsr & uap->port.ignore_status_mask) == 0) {
-			tty_insert_flip_char(tty, ch, flag);
-		}
-		if ((rsr & UART01x_RSR_OE) &&
-		    tty->flip.count < TTY_FLIPBUF_SIZE) {
-			/*
-			 * Overrun is special, since it's reported
-			 * immediately, and doesn't affect the current
-			 * character
-			 */
-			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
-		}
+		uart_insert_char(&uap->port, rsr, UART01x_RSR_OE, ch, flag);
+
 	ignore_char:
 		status = readw(uap->port.membase + UART01x_FR);
 	}
diff --git a/drivers/serial/clps711x.c b/drivers/serial/clps711x.c
index 6242f3090a9..e92522b33c4 100644
--- a/drivers/serial/clps711x.c
+++ b/drivers/serial/clps711x.c
@@ -143,10 +143,7 @@ static irqreturn_t clps711xuart_int_rx(int irq, void *dev_id, struct pt_regs *re
 		 * CHECK: does overrun affect the current character?
 		 * ASSUMPTION: it does not.
 		 */
-		if ((ch & port->ignore_status_mask & ~RXSTAT_OVERRUN) == 0)
-			tty_insert_flip_char(tty, ch, flg);
-		if ((ch & ~port->ignore_status_mask & RXSTAT_OVERRUN) == 0)
-			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+		uart_insert_char(port, ch, UARTDR_OVERR, ch, flg);
 
 	ignore_char:
 		status = clps_readl(SYSFLG(port));
diff --git a/drivers/serial/cpm_uart/cpm_uart_cpm2.c b/drivers/serial/cpm_uart/cpm_uart_cpm2.c
index b422c3abfba..c4c8f4b44f5 100644
--- a/drivers/serial/cpm_uart/cpm_uart_cpm2.c
+++ b/drivers/serial/cpm_uart/cpm_uart_cpm2.c
@@ -134,12 +134,21 @@ void scc1_lineif(struct uart_cpm_port *pinfo)
 
 void scc2_lineif(struct uart_cpm_port *pinfo)
 {
+	/*
+	 * STx GP3 uses the SCC2 secondary option pin assignment
+	 * which this driver doesn't account for in the static
+	 * pin assignments. This kind of board specific info
+	 * really has to get out of the driver so boards can
+	 * be supported in a sane fashion.
+	 */
+#ifndef CONFIG_STX_GP3
 	volatile iop_cpm2_t *io = &cpm2_immr->im_ioport;
 	io->iop_pparb |= 0x008b0000;
 	io->iop_pdirb |= 0x00880000;
 	io->iop_psorb |= 0x00880000;
 	io->iop_pdirb &= ~0x00030000;
 	io->iop_psorb &= ~0x00030000;
+#endif
 	cpm2_immr->im_cpmux.cmx_scr &= 0xff00ffff;
 	cpm2_immr->im_cpmux.cmx_scr |= 0x00090000;
 	pinfo->brg = 2;
diff --git a/drivers/serial/ioc4_serial.c b/drivers/serial/ioc4_serial.c
index ba4e13a22a5..793c3a7cbe4 100644
--- a/drivers/serial/ioc4_serial.c
+++ b/drivers/serial/ioc4_serial.c
@@ -20,7 +20,7 @@
 #include <linux/serial_reg.h>
 #include <linux/module.h>
 #include <linux/pci.h>
-#include <linux/ioc4_common.h>
+#include <linux/ioc4.h>
 #include <linux/serial_core.h>
 
 /*
@@ -130,12 +130,19 @@
 				 IOC4_SIO_IR_S3_TX_EXPLICIT)
 
 /* Bitmasks for IOC4_OTHER_IR, IOC4_OTHER_IEC, and IOC4_OTHER_IES  */
-#define IOC4_OTHER_IR_ATA_INT           0x00000001  /* ATAPI intr pass-thru */
-#define IOC4_OTHER_IR_ATA_MEMERR        0x00000002  /* ATAPI DMA PCI error */
-#define IOC4_OTHER_IR_S0_MEMERR         0x00000004  /* Port 0 PCI error */
-#define IOC4_OTHER_IR_S1_MEMERR         0x00000008  /* Port 1 PCI error */
-#define IOC4_OTHER_IR_S2_MEMERR         0x00000010  /* Port 2 PCI error */
-#define IOC4_OTHER_IR_S3_MEMERR         0x00000020  /* Port 3 PCI error */
+#define IOC4_OTHER_IR_ATA_INT		0x00000001  /* ATAPI intr pass-thru */
+#define IOC4_OTHER_IR_ATA_MEMERR	0x00000002  /* ATAPI DMA PCI error */
+#define IOC4_OTHER_IR_S0_MEMERR		0x00000004  /* Port 0 PCI error */
+#define IOC4_OTHER_IR_S1_MEMERR		0x00000008  /* Port 1 PCI error */
+#define IOC4_OTHER_IR_S2_MEMERR		0x00000010  /* Port 2 PCI error */
+#define IOC4_OTHER_IR_S3_MEMERR		0x00000020  /* Port 3 PCI error */
+#define IOC4_OTHER_IR_KBD_INT		0x00000040  /* Keyboard/mouse */
+#define IOC4_OTHER_IR_RESERVED		0x007fff80  /* Reserved */
+#define IOC4_OTHER_IR_RT_INT		0x00800000  /* INT_OUT section output */
+#define IOC4_OTHER_IR_GEN_INT		0xff000000  /* Generic pins */
+
+#define IOC4_OTHER_IR_SER_MEMERR (IOC4_OTHER_IR_S0_MEMERR | IOC4_OTHER_IR_S1_MEMERR | \
+				  IOC4_OTHER_IR_S2_MEMERR | IOC4_OTHER_IR_S3_MEMERR)
 
 /* Bitmasks for IOC4_SIO_CR */
 #define IOC4_SIO_CR_CMD_PULSE_SHIFT              0  /* byte bus strobe shift */
@@ -274,70 +281,24 @@ struct ioc4_uartregs {
 #define i4u_dlm u2.dlm
 #define i4u_fcr u3.fcr
 
-/* PCI memory space register map addressed using pci_bar0 */
-struct ioc4_memregs {
-	struct ioc4_mem {
-		/* Miscellaneous IOC4  registers */
-		uint32_t pci_err_addr_l;
-		uint32_t pci_err_addr_h;
-		uint32_t sio_ir;
-		uint32_t other_ir;
-
-		/* These registers are read-only for general kernel code.  */
-		uint32_t sio_ies_ro;
-		uint32_t other_ies_ro;
-		uint32_t sio_iec_ro;
-		uint32_t other_iec_ro;
-		uint32_t sio_cr;
-		uint32_t misc_fill1;
-		uint32_t int_out;
-		uint32_t misc_fill2;
-		uint32_t gpcr_s;
-		uint32_t gpcr_c;
-		uint32_t gpdr;
-		uint32_t misc_fill3;
-		uint32_t gppr_0;
-		uint32_t gppr_1;
-		uint32_t gppr_2;
-		uint32_t gppr_3;
-		uint32_t gppr_4;
-		uint32_t gppr_5;
-		uint32_t gppr_6;
-		uint32_t gppr_7;
-	} ioc4_mem;
-
-	char misc_fill4[0x100 - 0x5C - 4];
-
-	/* ATA/ATAP registers */
-	uint32_t ata_notused[9];
-	char ata_fill1[0x140 - 0x120 - 4];
-	uint32_t ata_notused1[8];
-	char ata_fill2[0x200 - 0x15C - 4];
-
-	/* Keyboard and mouse registers */
-	uint32_t km_notused[5];;
-	char km_fill1[0x300 - 0x210 - 4];
-
-	/* Serial port registers used for DMA serial I/O */
-	struct ioc4_serial {
-		uint32_t sbbr01_l;
-		uint32_t sbbr01_h;
-		uint32_t sbbr23_l;
-		uint32_t sbbr23_h;
-
-		struct ioc4_serialregs port_0;
-		struct ioc4_serialregs port_1;
-		struct ioc4_serialregs port_2;
-		struct ioc4_serialregs port_3;
-		struct ioc4_uartregs uart_0;
-		struct ioc4_uartregs uart_1;
-		struct ioc4_uartregs uart_2;
-		struct ioc4_uartregs uart_3;
-	} ioc4_serial;
-};
+/* Serial port registers used for DMA serial I/O */
+struct ioc4_serial {
+	uint32_t sbbr01_l;
+	uint32_t sbbr01_h;
+	uint32_t sbbr23_l;
+	uint32_t sbbr23_h;
+
+	struct ioc4_serialregs port_0;
+	struct ioc4_serialregs port_1;
+	struct ioc4_serialregs port_2;
+	struct ioc4_serialregs port_3;
+	struct ioc4_uartregs uart_0;
+	struct ioc4_uartregs uart_1;
+	struct ioc4_uartregs uart_2;
+	struct ioc4_uartregs uart_3;
+} ioc4_serial;
 
 /* UART clock speed */
-#define IOC4_SER_XIN_CLK        IOC4_SER_XIN_CLK_66
 #define IOC4_SER_XIN_CLK_66     66666667
 #define IOC4_SER_XIN_CLK_33     33333333
 
@@ -412,8 +373,8 @@ enum sio_proto {
 					| UART_LCR_WLEN7 | UART_LCR_WLEN8)
 #define LCR_MASK_STOP_BITS	(UART_LCR_STOP)
 
-#define PENDING(_p)	(readl(&(_p)->ip_mem->sio_ir) & _p->ip_ienb)
-#define READ_SIO_IR(_p) readl(&(_p)->ip_mem->sio_ir)
+#define PENDING(_p)	(readl(&(_p)->ip_mem->sio_ir.raw) & _p->ip_ienb)
+#define READ_SIO_IR(_p) readl(&(_p)->ip_mem->sio_ir.raw)
 
 /* Default to 4k buffers */
 #ifdef IOC4_1K_BUFFERS
@@ -447,7 +408,7 @@ struct ioc4_control {
  */
 #define MAX_IOC4_INTR_ENTS	(8 * sizeof(uint32_t))
 struct ioc4_soft {
-	struct ioc4_mem __iomem *is_ioc4_mem_addr;
+	struct ioc4_misc_regs __iomem *is_ioc4_misc_addr;
 	struct ioc4_serial __iomem *is_ioc4_serial_addr;
 
 	/* Each interrupt type has an entry in the array */
@@ -486,7 +447,7 @@ struct ioc4_port {
 	struct ioc4_soft *ip_ioc4_soft;
 
 	/* pci mem addresses */
-	struct ioc4_mem __iomem *ip_mem;
+	struct ioc4_misc_regs __iomem *ip_mem;
 	struct ioc4_serial __iomem *ip_serial;
 	struct ioc4_serialregs __iomem *ip_serial_regs;
 	struct ioc4_uartregs __iomem *ip_uart_regs;
@@ -553,7 +514,7 @@ struct hooks {
 	uint32_t intr_dma_error;
 	uint32_t intr_clear;
 	uint32_t intr_all;
-	char rs422_select_pin;
+	int rs422_select_pin;
 };
 
 static struct hooks hooks_array[IOC4_NUM_SERIAL_PORTS] = {
@@ -669,7 +630,7 @@ static void handle_intr(void *arg, uint32_t sio_ir);
 static inline void
 write_ireg(struct ioc4_soft *ioc4_soft, uint32_t val, int which, int type)
 {
-	struct ioc4_mem __iomem *mem = ioc4_soft->is_ioc4_mem_addr;
+	struct ioc4_misc_regs __iomem *mem = ioc4_soft->is_ioc4_misc_addr;
 	unsigned long flags;
 
 	spin_lock_irqsave(&ioc4_soft->is_ir_lock, flags);
@@ -678,11 +639,11 @@ write_ireg(struct ioc4_soft *ioc4_soft, uint32_t val, int which, int type)
 	case IOC4_SIO_INTR_TYPE:
 		switch (which) {
 		case IOC4_W_IES:
-			writel(val, &mem->sio_ies_ro);
+			writel(val, &mem->sio_ies.raw);
 			break;
 
 		case IOC4_W_IEC:
-			writel(val, &mem->sio_iec_ro);
+			writel(val, &mem->sio_iec.raw);
 			break;
 		}
 		break;
@@ -690,11 +651,11 @@ write_ireg(struct ioc4_soft *ioc4_soft, uint32_t val, int which, int type)
 	case IOC4_OTHER_INTR_TYPE:
 		switch (which) {
 		case IOC4_W_IES:
-			writel(val, &mem->other_ies_ro);
+			writel(val, &mem->other_ies.raw);
 			break;
 
 		case IOC4_W_IEC:
-			writel(val, &mem->other_iec_ro);
+			writel(val, &mem->other_iec.raw);
 			break;
 		}
 		break;
@@ -747,7 +708,8 @@ static int set_baud(struct ioc4_port *port, int baud)
  */
 static struct ioc4_port *get_ioc4_port(struct uart_port *the_port)
 {
-	struct ioc4_control *control = dev_get_drvdata(the_port->dev);
+	struct ioc4_driver_data *idd = dev_get_drvdata(the_port->dev);
+	struct ioc4_control *control = idd->idd_serial_data;
 	int ii;
 
 	if (control) {
@@ -782,7 +744,7 @@ static struct ioc4_port *get_ioc4_port(struct uart_port *the_port)
 static inline uint32_t
 pending_intrs(struct ioc4_soft *soft, int type)
 {
-	struct ioc4_mem __iomem *mem = soft->is_ioc4_mem_addr;
+	struct ioc4_misc_regs __iomem *mem = soft->is_ioc4_misc_addr;
 	unsigned long flag;
 	uint32_t intrs = 0;
 
@@ -793,11 +755,11 @@ pending_intrs(struct ioc4_soft *soft, int type)
 
 	switch (type) {
 	case IOC4_SIO_INTR_TYPE:
-		intrs = readl(&mem->sio_ir) & readl(&mem->sio_ies_ro);
+		intrs = readl(&mem->sio_ir.raw) & readl(&mem->sio_ies.raw);
 		break;
 
 	case IOC4_OTHER_INTR_TYPE:
-		intrs = readl(&mem->other_ir) & readl(&mem->other_ies_ro);
+		intrs = readl(&mem->other_ir.raw) & readl(&mem->other_ies.raw);
 
 		/* Don't process any ATA interrupte */
 		intrs &= ~(IOC4_OTHER_IR_ATA_INT | IOC4_OTHER_IR_ATA_MEMERR);
@@ -826,7 +788,7 @@ static int inline port_init(struct ioc4_port *port)
 
 	/* Wait until any pending bus activity for this port has ceased */
 	do
-		sio_cr = readl(&port->ip_mem->sio_cr);
+		sio_cr = readl(&port->ip_mem->sio_cr.raw);
 	while (!(sio_cr & IOC4_SIO_CR_SIO_DIAG_IDLE));
 
 	/* Finish reset sequence */
@@ -899,7 +861,7 @@ static int inline port_init(struct ioc4_port *port)
 	write_ireg(port->ip_ioc4_soft, hooks->intr_clear,
 		       IOC4_W_IEC, IOC4_SIO_INTR_TYPE);
 	port->ip_ienb &= ~hooks->intr_clear;
-	writel(hooks->intr_clear, &port->ip_mem->sio_ir);
+	writel(hooks->intr_clear, &port->ip_mem->sio_ir.raw);
 	return 0;
 }
 
@@ -918,23 +880,23 @@ static void handle_dma_error_intr(void *arg, uint32_t other_ir)
 	spin_lock_irqsave(&port->ip_lock, flags);
 
 	/* ACK the interrupt */
-	writel(hooks->intr_dma_error, &port->ip_mem->other_ir);
+	writel(hooks->intr_dma_error, &port->ip_mem->other_ir.raw);
 
-	if (readl(&port->ip_mem->pci_err_addr_l) & IOC4_PCI_ERR_ADDR_VLD) {
+	if (readl(&port->ip_mem->pci_err_addr_l.raw) & IOC4_PCI_ERR_ADDR_VLD) {
 		printk(KERN_ERR
 			"PCI error address is 0x%lx, "
 				"master is serial port %c %s\n",
 		     (((uint64_t)readl(&port->ip_mem->pci_err_addr_h)
 							 << 32)
-				| readl(&port->ip_mem->pci_err_addr_l))
+				| readl(&port->ip_mem->pci_err_addr_l.raw))
 					& IOC4_PCI_ERR_ADDR_ADDR_MSK, '1' +
-		     ((char)(readl(&port->ip_mem-> pci_err_addr_l) &
+		     ((char)(readl(&port->ip_mem->pci_err_addr_l.raw) &
 			     IOC4_PCI_ERR_ADDR_MST_NUM_MSK) >> 1),
-		     (readl(&port->ip_mem->pci_err_addr_l)
+		     (readl(&port->ip_mem->pci_err_addr_l.raw)
 				& IOC4_PCI_ERR_ADDR_MST_TYP_MSK)
 				? "RX" : "TX");
 
-		if (readl(&port->ip_mem->pci_err_addr_l)
+		if (readl(&port->ip_mem->pci_err_addr_l.raw)
 						& IOC4_PCI_ERR_ADDR_MUL_ERR) {
 			printk(KERN_ERR
 				"Multiple errors occurred\n");
@@ -1018,26 +980,26 @@ static irqreturn_t ioc4_intr(int irq, void *arg, struct pt_regs *regs)
 				"other_ies = 0x%x\n",
 			       (intr_type == IOC4_SIO_INTR_TYPE) ? "sio" :
 			       "other", this_ir,
-			       readl(&soft->is_ioc4_mem_addr->sio_ir),
-			       readl(&soft->is_ioc4_mem_addr->sio_ies_ro),
-			       readl(&soft->is_ioc4_mem_addr->other_ir),
-			       readl(&soft->is_ioc4_mem_addr->other_ies_ro));
+			       readl(&soft->is_ioc4_misc_addr->sio_ir.raw),
+			       readl(&soft->is_ioc4_misc_addr->sio_ies.raw),
+			       readl(&soft->is_ioc4_misc_addr->other_ir.raw),
+			       readl(&soft->is_ioc4_misc_addr->other_ies.raw));
 		}
 	}
 #ifdef DEBUG_INTERRUPTS
 	{
-		struct ioc4_mem __iomem *mem = soft->is_ioc4_mem_addr;
+		struct ioc4_misc_regs __iomem *mem = soft->is_ioc4_misc_addr;
 		spinlock_t *lp = &soft->is_ir_lock;
 		unsigned long flag;
 
 		spin_lock_irqsave(&soft->is_ir_lock, flag);
-		printk ("%s : %d : mem 0x%p sio_ir 0x%x sio_ies_ro 0x%x "
-				"other_ir 0x%x other_ies_ro 0x%x mask 0x%x\n",
+		printk ("%s : %d : mem 0x%p sio_ir 0x%x sio_ies 0x%x "
+				"other_ir 0x%x other_ies 0x%x mask 0x%x\n",
 		     __FUNCTION__, __LINE__,
-		     (void *)mem, readl(&mem->sio_ir),
-		     readl(&mem->sio_ies_ro),
-		     readl(&mem->other_ir),
-		     readl(&mem->other_ies_ro),
+		     (void *)mem, readl(&mem->sio_ir.raw),
+		     readl(&mem->sio_ies.raw),
+		     readl(&mem->other_ir.raw),
+		     readl(&mem->other_ies.raw),
 		     IOC4_OTHER_IR_ATA_INT | IOC4_OTHER_IR_ATA_MEMERR);
 		spin_unlock_irqrestore(&soft->is_ir_lock, flag);
 	}
@@ -1049,21 +1011,20 @@ static irqreturn_t ioc4_intr(int irq, void *arg, struct pt_regs *regs)
  * ioc4_attach_local - Device initialization.
  *			Called at *_attach() time for each
  *			IOC4 with serial ports in the system.
- * @control: ioc4_control ptr
- * @pdev: PCI handle for this device
- * @soft: soft struct for this device
- * @ioc4: ioc4 mem space
+ * @idd: Master module data for this IOC4
  */
-static int inline ioc4_attach_local(struct pci_dev *pdev,
-			struct ioc4_control *control,
-			struct ioc4_soft *soft, void __iomem *ioc4_mem,
-			void __iomem *ioc4_serial)
+static int inline ioc4_attach_local(struct ioc4_driver_data *idd)
 {
 	struct ioc4_port *port;
 	struct ioc4_port *ports[IOC4_NUM_SERIAL_PORTS];
 	int port_number;
 	uint16_t ioc4_revid_min = 62;
 	uint16_t ioc4_revid;
+	struct pci_dev *pdev = idd->idd_pdev;
+	struct ioc4_control* control = idd->idd_serial_data;
+	struct ioc4_soft *soft = control->ic_soft;
+	void __iomem *ioc4_misc = idd->idd_misc_regs;
+	void __iomem *ioc4_serial = soft->is_ioc4_serial_addr;
 
 	/* IOC4 firmware must be at least rev 62 */
 	pci_read_config_word(pdev, PCI_COMMAND_SPECIAL, &ioc4_revid);
@@ -1076,7 +1037,7 @@ static int inline ioc4_attach_local(struct pci_dev *pdev,
 				ioc4_revid, ioc4_revid_min);
 		return -EPERM;
 	}
-	BUG_ON(ioc4_mem == NULL);
+	BUG_ON(ioc4_misc == NULL);
 	BUG_ON(ioc4_serial == NULL);
 
 	/* Create port structures for each port */
@@ -1100,10 +1061,18 @@ static int inline ioc4_attach_local(struct pci_dev *pdev,
 		port->ip_ioc4_soft = soft;
 		port->ip_pdev = pdev;
 		port->ip_ienb = 0;
-		port->ip_pci_bus_speed = IOC4_SER_XIN_CLK;
+		/* Use baud rate calculations based on detected PCI
+		 * bus speed.  Simply test whether the PCI clock is
+		 * running closer to 66MHz or 33MHz.
+		 */
+		if (idd->count_period/IOC4_EXTINT_COUNT_DIVISOR < 20) {
+			port->ip_pci_bus_speed = IOC4_SER_XIN_CLK_66;
+		} else {
+			port->ip_pci_bus_speed = IOC4_SER_XIN_CLK_33;
+		}
 		port->ip_baud = 9600;
 		port->ip_control = control;
-		port->ip_mem = ioc4_mem;
+		port->ip_mem = ioc4_misc;
 		port->ip_serial = ioc4_serial;
 
 		/* point to the right hook */
@@ -1604,14 +1573,12 @@ static int ioc4_set_proto(struct ioc4_port *port, enum sio_proto proto)
 	switch (proto) {
 	case PROTO_RS232:
 		/* Clear the appropriate GIO pin */
-		writel(0, (&port->ip_mem->gppr_0 +
-				  hooks->rs422_select_pin));
+		writel(0, (&port->ip_mem->gppr[hooks->rs422_select_pin].raw));
 		break;
 
 	case PROTO_RS422:
 		/* Set the appropriate GIO pin */
-		writel(1, (&port->ip_mem->gppr_0 +
-				  hooks->rs422_select_pin));
+		writel(1, (&port->ip_mem->gppr[hooks->rs422_select_pin].raw));
 		break;
 
 	default:
@@ -1885,7 +1852,7 @@ static void handle_intr(void *arg, uint32_t sio_ir)
 		if (sio_ir & hooks->intr_delta_dcd) {
 			/* ACK the interrupt */
 			writel(hooks->intr_delta_dcd,
-				&port->ip_mem->sio_ir);
+				&port->ip_mem->sio_ir.raw);
 
 			shadow = readl(&port->ip_serial_regs->shadow);
 
@@ -1907,7 +1874,7 @@ static void handle_intr(void *arg, uint32_t sio_ir)
 		if (sio_ir & hooks->intr_delta_cts) {
 			/* ACK the interrupt */
 			writel(hooks->intr_delta_cts,
-					&port->ip_mem->sio_ir);
+					&port->ip_mem->sio_ir.raw);
 
 			shadow = readl(&port->ip_serial_regs->shadow);
 
@@ -1928,7 +1895,7 @@ static void handle_intr(void *arg, uint32_t sio_ir)
 		if (sio_ir & hooks->intr_rx_timer) {
 			/* ACK the interrupt */
 			writel(hooks->intr_rx_timer,
-				&port->ip_mem->sio_ir);
+				&port->ip_mem->sio_ir.raw);
 
 			if ((port->ip_notify & N_DATA_READY)
 					&& (port->ip_port)) {
@@ -1974,7 +1941,7 @@ static void handle_intr(void *arg, uint32_t sio_ir)
 
 			/* ACK the interrupt */
 			writel(hooks->intr_tx_explicit,
-					&port->ip_mem->sio_ir);
+					&port->ip_mem->sio_ir.raw);
 
 			if (port->ip_notify & N_OUTPUT_LOWAT)
 				ioc4_cb_output_lowat(port);
@@ -2634,7 +2601,8 @@ ioc4_serial_core_attach(struct pci_dev *pdev)
 {
 	struct ioc4_port *port;
 	struct uart_port *the_port;
-	struct ioc4_control *control = pci_get_drvdata(pdev);
+	struct ioc4_driver_data *idd = pci_get_drvdata(pdev);
+	struct ioc4_control *control = idd->idd_serial_data;
 	int ii;
 
 	DPRINT_CONFIG(("%s: attach pdev 0x%p - control 0x%p\n",
@@ -2680,55 +2648,29 @@ ioc4_serial_core_attach(struct pci_dev *pdev)
 
 /**
  * ioc4_serial_attach_one - register attach function
- *		called per card found from ioc4_serial_detect as part
- *		of module_init().
- * @pdev: handle for this card
- * @pci_id: pci id for this card
+ *		called per card found from IOC4 master module.
+ * @idd: Master module data for this IOC4
  */
 int
-ioc4_serial_attach_one(struct pci_dev *pdev, const struct pci_device_id *pci_id)
+ioc4_serial_attach_one(struct ioc4_driver_data *idd)
 {
-	struct ioc4_mem __iomem *mem;
-	unsigned long tmp_addr, tmp_addr1;
+	unsigned long tmp_addr1;
 	struct ioc4_serial __iomem *serial;
 	struct ioc4_soft *soft;
 	struct ioc4_control *control;
-	int tmp, ret = 0;
+	int ret = 0;
 
 
-	DPRINT_CONFIG(("%s (0x%p, 0x%p)\n", __FUNCTION__, pdev, pci_id));
-
-	/* Map in the ioc4 memory */
-	tmp_addr = pci_resource_start(pdev, 0);
-	if (!tmp_addr) {
-		printk(KERN_WARNING
-			 "ioc4 (%p) : unable to get PIO mapping for "
-				"MEM space\n", (void *)pdev);
-		return -ENODEV;
-	}
-	if (!request_region(tmp_addr, sizeof(struct ioc4_mem), "sioc4_mem")) {
-		printk(KERN_ALERT
-			"ioc4 (%p): unable to get request region for "
-			"MEM space\n", (void *)pdev);
-		return -ENODEV;
-	}
-	mem = ioremap(tmp_addr, sizeof(struct ioc4_mem));
-	if (!mem) {
-		printk(KERN_WARNING
-			 "ioc4 (%p) : unable to remap ioc4 memory\n",
-				(void *)pdev);
-		ret = -ENODEV;
-		goto out1;
-	}
+	DPRINT_CONFIG(("%s (0x%p, 0x%p)\n", __FUNCTION__, idd->idd_pdev, idd->idd_pci_id));
 
 	/* request serial registers */
-	tmp_addr1 = pci_resource_start(pdev, 0) + IOC4_SERIAL_OFFSET;
+	tmp_addr1 = idd->idd_bar0 + IOC4_SERIAL_OFFSET;
 
 	if (!request_region(tmp_addr1, sizeof(struct ioc4_serial),
 					"sioc4_uart")) {
 		printk(KERN_WARNING
 			"ioc4 (%p): unable to get request region for "
-				"uart space\n", (void *)pdev);
+				"uart space\n", (void *)idd->idd_pdev);
 		ret = -ENODEV;
 		goto out1;
 	}
@@ -2736,12 +2678,12 @@ ioc4_serial_attach_one(struct pci_dev *pdev, const struct pci_device_id *pci_id)
 	if (!serial) {
 		printk(KERN_WARNING
 			 "ioc4 (%p) : unable to remap ioc4 serial register\n",
-				(void *)pdev);
+				(void *)idd->idd_pdev);
 		ret = -ENODEV;
 		goto out2;
 	}
 	DPRINT_CONFIG(("%s : mem 0x%p, serial 0x%p\n",
-				__FUNCTION__, (void *)mem, (void *)serial));
+				__FUNCTION__, (void *)idd->idd_misc_regs, (void *)serial));
 
 	/* Get memory for the new card */
 	control = kmalloc(sizeof(struct ioc4_control) * IOC4_NUM_SERIAL_PORTS,
@@ -2754,59 +2696,56 @@ ioc4_serial_attach_one(struct pci_dev *pdev, const struct pci_device_id *pci_id)
 		goto out2;
 	}
 	memset(control, 0, sizeof(struct ioc4_control));
-	pci_set_drvdata(pdev, control);
+	idd->idd_serial_data = control;
 
 	/* Allocate the soft structure */
 	soft = kmalloc(sizeof(struct ioc4_soft), GFP_KERNEL);
 	if (!soft) {
 		printk(KERN_WARNING
 		       "ioc4 (%p): unable to get memory for the soft struct\n",
-		       (void *)pdev);
+		       (void *)idd->idd_pdev);
 		ret = -ENOMEM;
 		goto out3;
 	}
 	memset(soft, 0, sizeof(struct ioc4_soft));
 
 	spin_lock_init(&soft->is_ir_lock);
-	soft->is_ioc4_mem_addr = mem;
+	soft->is_ioc4_misc_addr = idd->idd_misc_regs;
 	soft->is_ioc4_serial_addr = serial;
 
 	/* Init the IOC4 */
-	pci_read_config_dword(pdev, PCI_COMMAND, &tmp);
-	pci_write_config_dword(pdev, PCI_COMMAND,
-			       tmp | PCI_COMMAND_PARITY | PCI_COMMAND_SERR);
-
-	writel(0xf << IOC4_SIO_CR_CMD_PULSE_SHIFT, &mem->sio_cr);
+	writel(0xf << IOC4_SIO_CR_CMD_PULSE_SHIFT,
+	       &idd->idd_misc_regs->sio_cr.raw);
 
 	/* Enable serial port mode select generic PIO pins as outputs */
 	writel(IOC4_GPCR_UART0_MODESEL | IOC4_GPCR_UART1_MODESEL
 		| IOC4_GPCR_UART2_MODESEL | IOC4_GPCR_UART3_MODESEL,
-		&mem->gpcr_s);
+		&idd->idd_misc_regs->gpcr_s.raw);
 
-	/* Clear and disable all interrupts */
+	/* Clear and disable all serial interrupts */
 	write_ireg(soft, ~0, IOC4_W_IEC, IOC4_SIO_INTR_TYPE);
-	writel(~0, &mem->sio_ir);
-	write_ireg(soft, ~(IOC4_OTHER_IR_ATA_INT | IOC4_OTHER_IR_ATA_MEMERR),
-			IOC4_W_IEC, IOC4_OTHER_INTR_TYPE);
-	writel(~(IOC4_OTHER_IR_ATA_MEMERR | IOC4_OTHER_IR_ATA_MEMERR),
-					&mem->other_ir);
+	writel(~0, &idd->idd_misc_regs->sio_ir.raw);
+	write_ireg(soft, IOC4_OTHER_IR_SER_MEMERR, IOC4_W_IEC,
+		   IOC4_OTHER_INTR_TYPE);
+	writel(IOC4_OTHER_IR_SER_MEMERR, &idd->idd_misc_regs->other_ir.raw);
 	control->ic_soft = soft;
-	if (!request_irq(pdev->irq, ioc4_intr, SA_SHIRQ,
+
+	/* Hook up interrupt handler */
+	if (!request_irq(idd->idd_pdev->irq, ioc4_intr, SA_SHIRQ,
 				"sgi-ioc4serial", (void *)soft)) {
-		control->ic_irq = pdev->irq;
+		control->ic_irq = idd->idd_pdev->irq;
 	} else {
 		printk(KERN_WARNING
 		    "%s : request_irq fails for IRQ 0x%x\n ",
-			__FUNCTION__, pdev->irq);
+			__FUNCTION__, idd->idd_pdev->irq);
 	}
-	if ((ret = ioc4_attach_local(pdev, control, soft,
-				soft->is_ioc4_mem_addr,
-				soft->is_ioc4_serial_addr)))
+	ret = ioc4_attach_local(idd);
+	if (ret)
 		goto out4;
 
 	/* register port with the serial core */
 
-	if ((ret = ioc4_serial_core_attach(pdev)))
+	if ((ret = ioc4_serial_core_attach(idd->idd_pdev)))
 		goto out4;
 
 	return ret;
@@ -2819,7 +2758,6 @@ out3:
 out2:
 	release_region(tmp_addr1, sizeof(struct ioc4_serial));
 out1:
-	release_region(tmp_addr, sizeof(struct ioc4_mem));
 
 	return ret;
 }
@@ -2828,11 +2766,10 @@ out1:
 /**
  * ioc4_serial_remove_one - detach function
  *
- * @pdev: handle for this card
+ * @idd: IOC4 master module data for this IOC4
  */
 
-#if 0
-void ioc4_serial_remove_one(struct pci_dev *pdev)
+int ioc4_serial_remove_one(struct ioc4_driver_data *idd)
 {
 	int ii;
 	struct ioc4_control *control;
@@ -2840,7 +2777,7 @@ void ioc4_serial_remove_one(struct pci_dev *pdev)
 	struct ioc4_port *port;
 	struct ioc4_soft *soft;
 
-	control = pci_get_drvdata(pdev);
+	control = idd->idd_serial_data;
 
 	for (ii = 0; ii < IOC4_NUM_SERIAL_PORTS; ii++) {
 		the_port = &control->ic_port[ii].icp_uart_port;
@@ -2867,10 +2804,17 @@ void ioc4_serial_remove_one(struct pci_dev *pdev)
 		kfree(soft);
 	}
 	kfree(control);
-	pci_set_drvdata(pdev, NULL);
-	uart_unregister_driver(&ioc4_uart);
+	idd->idd_serial_data = NULL;
+
+	return 0;
 }
-#endif
+
+static struct ioc4_submodule ioc4_serial_submodule = {
+	.is_name = "IOC4_serial",
+	.is_owner = THIS_MODULE,
+	.is_probe = ioc4_serial_attach_one,
+	.is_remove = ioc4_serial_remove_one,
+};
 
 /**
  * ioc4_serial_init - module init
@@ -2886,12 +2830,20 @@ int ioc4_serial_init(void)
 			__FUNCTION__);
 		return ret;
 	}
-	return 0;
+
+	/* register with IOC4 main module */
+	return ioc4_register_submodule(&ioc4_serial_submodule);
+}
+
+static void __devexit ioc4_serial_exit(void)
+{
+	ioc4_unregister_submodule(&ioc4_serial_submodule);
+	uart_unregister_driver(&ioc4_uart);
 }
 
+module_init(ioc4_serial_init);
+module_exit(ioc4_serial_exit);
+
 MODULE_AUTHOR("Pat Gefre - Silicon Graphics Inc. (SGI) <pfg@sgi.com>");
 MODULE_DESCRIPTION("Serial PCI driver module for SGI IOC4 Base-IO Card");
 MODULE_LICENSE("GPL");
-
-EXPORT_SYMBOL(ioc4_serial_init);
-EXPORT_SYMBOL(ioc4_serial_attach_one);
diff --git a/drivers/serial/pxa.c b/drivers/serial/pxa.c
index 51d8a49f447..9dc151d8fa6 100644
--- a/drivers/serial/pxa.c
+++ b/drivers/serial/pxa.c
@@ -161,20 +161,12 @@ receive_chars(struct uart_pxa_port *up, int *status, struct pt_regs *regs)
 			else if (*status & UART_LSR_FE)
 				flag = TTY_FRAME;
 		}
+
 		if (uart_handle_sysrq_char(&up->port, ch, regs))
 			goto ignore_char;
-		if ((*status & up->port.ignore_status_mask) == 0) {
-			tty_insert_flip_char(tty, ch, flag);
-		}
-		if ((*status & UART_LSR_OE) &&
-		    tty->flip.count < TTY_FLIPBUF_SIZE) {
-			/*
-			 * Overrun is special, since it's reported
-			 * immediately, and doesn't affect the current
-			 * character.
-			 */
-			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
-		}
+
+		uart_insert_char(&up->port, *status, UART_LSR_OE, ch, flag);
+
 	ignore_char:
 		*status = serial_in(up, UART_LSR);
 	} while ((*status & UART_LSR_DR) && (max_count-- > 0));
diff --git a/drivers/serial/s3c2410.c b/drivers/serial/s3c2410.c
index 435750d40a4..2a9f7ade2c9 100644
--- a/drivers/serial/s3c2410.c
+++ b/drivers/serial/s3c2410.c
@@ -394,20 +394,7 @@ s3c24xx_serial_rx_chars(int irq, void *dev_id, struct pt_regs *regs)
 		if (uart_handle_sysrq_char(port, ch, regs))
 			goto ignore_char;
 
-		if ((uerstat & port->ignore_status_mask) == 0) {
-			tty_insert_flip_char(tty, ch, flag);
-		}
-
-		if ((uerstat & S3C2410_UERSTAT_OVERRUN) &&
-		    tty->flip.count < TTY_FLIPBUF_SIZE) {
-			/*
-			 * Overrun is special, since it's reported
-			 * immediately, and doesn't affect the current
-			 * character.
-			 */
-
-			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
-		}
+		uart_insert_char(port, uerstat, S3C2410_UERSTAT_OVERRUN, ch, flag);
 
 	ignore_char:
 		continue;
diff --git a/drivers/serial/sa1100.c b/drivers/serial/sa1100.c
index 157218bc6c6..98641c3f5ab 100644
--- a/drivers/serial/sa1100.c
+++ b/drivers/serial/sa1100.c
@@ -197,7 +197,7 @@ static void
 sa1100_rx_chars(struct sa1100_port *sport, struct pt_regs *regs)
 {
 	struct tty_struct *tty = sport->port.info->tty;
-	unsigned int status, ch, flg, ignored = 0;
+	unsigned int status, ch, flg;
 
 	status = UTSR1_TO_SM(UART_GET_UTSR1(sport)) |
 		 UTSR0_TO_SM(UART_GET_UTSR0(sport));
@@ -237,10 +237,7 @@ sa1100_rx_chars(struct sa1100_port *sport, struct pt_regs *regs)
 		if (uart_handle_sysrq_char(&sport->port, ch, regs))
 			goto ignore_char;
 
-		if ((status & port->ignore_status_mask & ~UTSR1_TO_SM(UTSR1_ROR)) == 0)
-			tty_insert_flip_char(tty, ch, flg);
-		if (status & ~port->ignore_status_mask & UTSR1_TO_SM(UTSR1_ROR))
-			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+		uart_insert_char(&sport->port, status, UTSR1_TO_SM(UTSR1_ROR), ch, flg);
 
 	ignore_char:
 		status = UTSR1_TO_SM(UART_GET_UTSR1(sport)) |
diff --git a/drivers/serial/serial_cs.c b/drivers/serial/serial_cs.c
index 6eeb48f6a48..0d7b65f93e8 100644
--- a/drivers/serial/serial_cs.c
+++ b/drivers/serial/serial_cs.c
@@ -661,10 +661,10 @@ void serial_config(dev_link_t * link)
 	/* Is this a multiport card? */
 	tuple->DesiredTuple = CISTPL_MANFID;
 	if (first_tuple(handle, tuple, parse) == CS_SUCCESS) {
-		info->manfid = le16_to_cpu(buf[0]);
+		info->manfid = parse->manfid.manf;
 		for (i = 0; i < MULTI_COUNT; i++)
 			if ((info->manfid == multi_id[i].manfid) &&
-			    (le16_to_cpu(buf[1]) == multi_id[i].prodid))
+			    (parse->manfid.card == multi_id[i].prodid))
 				break;
 		if (i < MULTI_COUNT)
 			info->multi = multi_id[i].multi;
diff --git a/drivers/serial/serial_lh7a40x.c b/drivers/serial/serial_lh7a40x.c
index 85cfa08d3ba..56f269b6bfb 100644
--- a/drivers/serial/serial_lh7a40x.c
+++ b/drivers/serial/serial_lh7a40x.c
@@ -190,18 +190,7 @@ lh7a40xuart_rx_chars (struct uart_port* port)
 		if (uart_handle_sysrq_char (port, (unsigned char) data, regs))
 			continue;
 
-		if ((data & port->ignore_status_mask) == 0) {
-			tty_insert_flip_char(tty, data, flag);
-		}
-		if ((data & RxOverrunError)
-		    && tty->flip.count < TTY_FLIPBUF_SIZE) {
-			/*
-			 * Overrun is special, since it's reported
-			 * immediately, and doesn't affect the current
-			 * character
-			 */
-			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
-		}
+		uart_insert_char(port, data, RxOverrunError, data, flag);
 	}
 	tty_flip_buffer_push (tty);
 	return;
diff --git a/drivers/serial/serial_txx9.c b/drivers/serial/serial_txx9.c
index 37b2ef297cb..3f1051a4a13 100644
--- a/drivers/serial/serial_txx9.c
+++ b/drivers/serial/serial_txx9.c
@@ -350,18 +350,9 @@ receive_chars(struct uart_txx9_port *up, unsigned int *status, struct pt_regs *r
 		}
 		if (uart_handle_sysrq_char(&up->port, ch, regs))
 			goto ignore_char;
-		if ((disr & up->port.ignore_status_mask) == 0) {
-			tty_insert_flip_char(tty, ch, flag);
-		}
-		if ((disr & TXX9_SIDISR_UOER) &&
-		    tty->flip.count < TTY_FLIPBUF_SIZE) {
-			/*
-			 * Overrun is special, since it's reported
-			 * immediately, and doesn't affect the current
-			 * character.
-			 */
-			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
-		}
+
+		uart_insert_char(&up->port, disr, TXX9_SIDISR_UOER, ch, flag);
+
 	ignore_char:
 		disr = sio_in(up, TXX9_SIDISR);
 	} while (!(disr & TXX9_SIDISR_UVALID) && (max_count-- > 0));
diff --git a/drivers/serial/sunsab.c b/drivers/serial/sunsab.c
index 39b788d95e3..10e2990a40d 100644
--- a/drivers/serial/sunsab.c
+++ b/drivers/serial/sunsab.c
@@ -61,6 +61,16 @@ struct uart_sunsab_port {
 	unsigned char			pvr_dtr_bit;	/* Which PVR bit is DTR */
 	unsigned char			pvr_dsr_bit;	/* Which PVR bit is DSR */
 	int				type;		/* SAB82532 version	*/
+
+	/* Setting configuration bits while the transmitter is active
+	 * can cause garbage characters to get emitted by the chip.
+	 * Therefore, we cache such writes here and do the real register
+	 * write the next time the transmitter becomes idle.
+	 */
+	unsigned int			cached_ebrg;
+	unsigned char			cached_mode;
+	unsigned char			cached_pvr;
+	unsigned char			cached_dafo;
 };
 
 /*
@@ -236,6 +246,7 @@ receive_chars(struct uart_sunsab_port *up,
 }
 
 static void sunsab_stop_tx(struct uart_port *, unsigned int);
+static void sunsab_tx_idle(struct uart_sunsab_port *);
 
 static void transmit_chars(struct uart_sunsab_port *up,
 			   union sab82532_irq_status *stat)
@@ -258,6 +269,7 @@ static void transmit_chars(struct uart_sunsab_port *up,
 		return;
 
 	set_bit(SAB82532_XPR, &up->irqflags);
+	sunsab_tx_idle(up);
 
 	if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) {
 		up->interrupt_mask1 |= SAB82532_IMR1_XPR;
@@ -397,21 +409,21 @@ static void sunsab_set_mctrl(struct uart_port *port, unsigned int mctrl)
 	struct uart_sunsab_port *up = (struct uart_sunsab_port *) port;
 
 	if (mctrl & TIOCM_RTS) {
-		writeb(readb(&up->regs->rw.mode) & ~SAB82532_MODE_FRTS,
-		       &up->regs->rw.mode);
-		writeb(readb(&up->regs->rw.mode) | SAB82532_MODE_RTS,
-		       &up->regs->rw.mode);
+		up->cached_mode &= ~SAB82532_MODE_FRTS;
+		up->cached_mode |= SAB82532_MODE_RTS;
 	} else {
-		writeb(readb(&up->regs->rw.mode) | SAB82532_MODE_FRTS,
-		       &up->regs->rw.mode);
-		writeb(readb(&up->regs->rw.mode) | SAB82532_MODE_RTS,
-		       &up->regs->rw.mode);
+		up->cached_mode |= (SAB82532_MODE_FRTS |
+				    SAB82532_MODE_RTS);
 	}
 	if (mctrl & TIOCM_DTR) {
-		writeb(readb(&up->regs->rw.pvr) & ~(up->pvr_dtr_bit), &up->regs->rw.pvr);
+		up->cached_pvr &= ~(up->pvr_dtr_bit);
 	} else {
-		writeb(readb(&up->regs->rw.pvr) | up->pvr_dtr_bit, &up->regs->rw.pvr);
+		up->cached_pvr |= up->pvr_dtr_bit;
 	}
+
+	set_bit(SAB82532_REGS_PENDING, &up->irqflags);
+	if (test_bit(SAB82532_XPR, &up->irqflags))
+		sunsab_tx_idle(up);
 }
 
 /* port->lock is not held.  */
@@ -450,6 +462,25 @@ static void sunsab_stop_tx(struct uart_port *port, unsigned int tty_stop)
 }
 
 /* port->lock held by caller.  */
+static void sunsab_tx_idle(struct uart_sunsab_port *up)
+{
+	if (test_bit(SAB82532_REGS_PENDING, &up->irqflags)) {
+		u8 tmp;
+
+		clear_bit(SAB82532_REGS_PENDING, &up->irqflags);
+		writeb(up->cached_mode, &up->regs->rw.mode);
+		writeb(up->cached_pvr, &up->regs->rw.pvr);
+		writeb(up->cached_dafo, &up->regs->w.dafo);
+
+		writeb(up->cached_ebrg & 0xff, &up->regs->w.bgr);
+		tmp = readb(&up->regs->rw.ccr2);
+		tmp &= ~0xc0;
+		tmp |= (up->cached_ebrg >> 2) & 0xc0;
+		writeb(tmp, &up->regs->rw.ccr2);
+	}
+}
+
+/* port->lock held by caller.  */
 static void sunsab_start_tx(struct uart_port *port, unsigned int tty_start)
 {
 	struct uart_sunsab_port *up = (struct uart_sunsab_port *) port;
@@ -517,12 +548,16 @@ static void sunsab_break_ctl(struct uart_port *port, int break_state)
 
 	spin_lock_irqsave(&up->port.lock, flags);
 
-	val = readb(&up->regs->rw.dafo);
+	val = up->cached_dafo;
 	if (break_state)
 		val |= SAB82532_DAFO_XBRK;
 	else
 		val &= ~SAB82532_DAFO_XBRK;
-	writeb(val, &up->regs->rw.dafo);
+	up->cached_dafo = val;
+
+	set_bit(SAB82532_REGS_PENDING, &up->irqflags);
+	if (test_bit(SAB82532_XPR, &up->irqflags))
+		sunsab_tx_idle(up);
 
 	spin_unlock_irqrestore(&up->port.lock, flags);
 }
@@ -566,8 +601,9 @@ static int sunsab_startup(struct uart_port *port)
 	       SAB82532_CCR2_TOE, &up->regs->w.ccr2);
 	writeb(0, &up->regs->w.ccr3);
 	writeb(SAB82532_CCR4_MCK4 | SAB82532_CCR4_EBRG, &up->regs->w.ccr4);
-	writeb(SAB82532_MODE_RTS | SAB82532_MODE_FCTS |
-	       SAB82532_MODE_RAC, &up->regs->w.mode);
+	up->cached_mode = (SAB82532_MODE_RTS | SAB82532_MODE_FCTS |
+			   SAB82532_MODE_RAC);
+	writeb(up->cached_mode, &up->regs->w.mode);
 	writeb(SAB82532_RFC_DPS|SAB82532_RFC_RFTH_32, &up->regs->w.rfc);
 	
 	tmp = readb(&up->regs->rw.ccr0);
@@ -598,7 +634,6 @@ static void sunsab_shutdown(struct uart_port *port)
 {
 	struct uart_sunsab_port *up = (struct uart_sunsab_port *) port;
 	unsigned long flags;
-	unsigned char tmp;
 
 	spin_lock_irqsave(&up->port.lock, flags);
 
@@ -609,14 +644,13 @@ static void sunsab_shutdown(struct uart_port *port)
 	writeb(up->interrupt_mask1, &up->regs->w.imr1);
 
 	/* Disable break condition */
-	tmp = readb(&up->regs->rw.dafo);
-	tmp &= ~SAB82532_DAFO_XBRK;
-	writeb(tmp, &up->regs->rw.dafo);
+	up->cached_dafo = readb(&up->regs->rw.dafo);
+	up->cached_dafo &= ~SAB82532_DAFO_XBRK;
+	writeb(up->cached_dafo, &up->regs->rw.dafo);
 
 	/* Disable Receiver */	
-	tmp = readb(&up->regs->rw.mode);
-	tmp &= ~SAB82532_MODE_RAC;
-	writeb(tmp, &up->regs->rw.mode);
+	up->cached_mode &= ~SAB82532_MODE_RAC;
+	writeb(up->cached_mode, &up->regs->rw.mode);
 
 	/*
 	 * XXX FIXME
@@ -685,7 +719,6 @@ static void sunsab_convert_to_sab(struct uart_sunsab_port *up, unsigned int cfla
 				  unsigned int iflag, unsigned int baud,
 				  unsigned int quot)
 {
-	unsigned int ebrg;
 	unsigned char dafo;
 	int bits, n, m;
 
@@ -714,10 +747,11 @@ static void sunsab_convert_to_sab(struct uart_sunsab_port *up, unsigned int cfla
 	} else {
 		dafo |= SAB82532_DAFO_PAR_EVEN;
 	}
+	up->cached_dafo = dafo;
 
 	calc_ebrg(baud, &n, &m);
 
-	ebrg = n | (m << 6);
+	up->cached_ebrg = n | (m << 6);
 
 	up->tec_timeout = (10 * 1000000) / baud;
 	up->cec_timeout = up->tec_timeout >> 2;
@@ -770,16 +804,13 @@ static void sunsab_convert_to_sab(struct uart_sunsab_port *up, unsigned int cfla
 	uart_update_timeout(&up->port, cflag,
 			    (up->port.uartclk / (16 * quot)));
 
-	/* Now bang the new settings into the chip.  */
-	sunsab_cec_wait(up);
-	sunsab_tec_wait(up);
-	writeb(dafo, &up->regs->w.dafo);
-	writeb(ebrg & 0xff, &up->regs->w.bgr);
-	writeb((readb(&up->regs->rw.ccr2) & ~0xc0) | ((ebrg >> 2) & 0xc0),
-	       &up->regs->rw.ccr2);
-
-	writeb(readb(&up->regs->rw.mode) | SAB82532_MODE_RAC, &up->regs->rw.mode);
-
+	/* Now schedule a register update when the chip's
+	 * transmitter is idle.
+	 */
+	up->cached_mode |= SAB82532_MODE_RAC;
+	set_bit(SAB82532_REGS_PENDING, &up->irqflags);
+	if (test_bit(SAB82532_XPR, &up->irqflags))
+		sunsab_tx_idle(up);
 }
 
 /* port->lock is not held.  */
@@ -1084,11 +1115,13 @@ static void __init sunsab_init_hw(void)
 			up->pvr_dsr_bit = (1 << 3);
 			up->pvr_dtr_bit = (1 << 2);
 		}
-		writeb((1 << 1) | (1 << 2) | (1 << 4), &up->regs->w.pvr);
-		writeb(readb(&up->regs->rw.mode) | SAB82532_MODE_FRTS,
-		       &up->regs->rw.mode);
-		writeb(readb(&up->regs->rw.mode) | SAB82532_MODE_RTS,
-		       &up->regs->rw.mode);
+		up->cached_pvr = (1 << 1) | (1 << 2) | (1 << 4);
+		writeb(up->cached_pvr, &up->regs->w.pvr);
+		up->cached_mode = readb(&up->regs->rw.mode);
+		up->cached_mode |= SAB82532_MODE_FRTS;
+		writeb(up->cached_mode, &up->regs->rw.mode);
+		up->cached_mode |= SAB82532_MODE_RTS;
+		writeb(up->cached_mode, &up->regs->rw.mode);
 
 		up->tec_timeout = SAB82532_MAX_TEC_TIMEOUT;
 		up->cec_timeout = SAB82532_MAX_CEC_TIMEOUT;
diff --git a/drivers/serial/sunsab.h b/drivers/serial/sunsab.h
index 686086fcbbf..b78e1f7b805 100644
--- a/drivers/serial/sunsab.h
+++ b/drivers/serial/sunsab.h
@@ -126,6 +126,7 @@ union sab82532_irq_status {
 /* irqflags bits */
 #define SAB82532_ALLS			0x00000001
 #define SAB82532_XPR			0x00000002
+#define SAB82532_REGS_PENDING		0x00000004
 
 /* RFIFO Status Byte */
 #define SAB82532_RSTAT_PE		0x80
diff --git a/drivers/serial/vr41xx_siu.c b/drivers/serial/vr41xx_siu.c
index 307886199f2..1f985327b0d 100644
--- a/drivers/serial/vr41xx_siu.c
+++ b/drivers/serial/vr41xx_siu.c
@@ -234,7 +234,7 @@ static inline const char *siu_type_name(struct uart_port *port)
 		return "DSIU";
 	}
 
-	return "unknown";
+	return NULL;
 }
 
 static unsigned int siu_tx_empty(struct uart_port *port)
@@ -412,10 +412,8 @@ static inline void receive_chars(struct uart_port *port, uint8_t *status,
 
 		if (uart_handle_sysrq_char(port, ch, regs))
 			goto ignore_char;
-		if ((lsr & port->ignore_status_mask) == 0)
-			tty_insert_flip_char(tty, ch, flag);
-		if ((lsr & UART_LSR_OE) && (tty->flip.count < TTY_FLIPBUF_SIZE))
-			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+
+		uart_insert_char(port, lsr, UART_LSR_OE, ch, flag);
 
 	ignore_char:
 		lsr = siu_read(port, UART_LSR);
@@ -484,9 +482,6 @@ static irqreturn_t siu_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 	struct uart_port *port;
 	uint8_t iir, lsr;
 
-	if (dev_id == NULL)
-		return IRQ_NONE;
-
 	port = (struct uart_port *)dev_id;
 
 	iir = siu_read(port, UART_IIR);
@@ -509,6 +504,9 @@ static int siu_startup(struct uart_port *port)
 {
 	int retval;
 
+	if (port->membase == NULL)
+		return -ENODEV;
+
 	siu_clear_fifo(port);
 
 	(void)siu_read(port, UART_LSR);
@@ -547,9 +545,6 @@ static void siu_shutdown(struct uart_port *port)
 	unsigned long flags;
 	uint8_t lcr;
 
-	if (port->membase == NULL)
-		return;
-
 	siu_write(port, UART_IER, 0);
 
 	spin_lock_irqsave(&port->lock, flags);
@@ -804,53 +799,6 @@ static int siu_init_ports(void)
 
 #ifdef CONFIG_SERIAL_VR41XX_CONSOLE
 
-static void early_set_termios(struct uart_port *port, struct termios *new,
-                              struct termios *old)
-{
-	tcflag_t c_cflag;
-	uint8_t lcr;
-	unsigned int baud, quot;
-
-	c_cflag = new->c_cflag;
-	switch (c_cflag & CSIZE) {
-	case CS5:
-		lcr = UART_LCR_WLEN5;
-		break;
-	case CS6:
-		lcr = UART_LCR_WLEN6;
-		break;
-	case CS7:
-		lcr = UART_LCR_WLEN7;
-		break;
-	default:
-		lcr = UART_LCR_WLEN8;
-		break;
-	}
-
-	if (c_cflag & CSTOPB)
-		lcr |= UART_LCR_STOP;
-	if (c_cflag & PARENB)
-		lcr |= UART_LCR_PARITY;
-	if ((c_cflag & PARODD) != PARODD)
-		lcr |= UART_LCR_EPAR;
-	if (c_cflag & CMSPAR)
-		lcr |= UART_LCR_SPAR;
-
-	baud = uart_get_baud_rate(port, new, old, 0, port->uartclk/16);
-	quot = uart_get_divisor(port, baud);
-
-	siu_write(port, UART_LCR, lcr | UART_LCR_DLAB);
-
-	siu_write(port, UART_DLL, (uint8_t)quot);
-	siu_write(port, UART_DLM, (uint8_t)(quot >> 8));
-
-	siu_write(port, UART_LCR, lcr);
-}
-
-static struct uart_ops early_uart_ops = {
-	.set_termios	= early_set_termios,
-};
-
 #define BOTH_EMPTY	(UART_LSR_TEMT | UART_LSR_THRE)
 
 static void wait_for_xmitr(struct uart_port *port)
@@ -917,7 +865,7 @@ static int siu_console_setup(struct console *con, char *options)
 	if (port->membase == NULL) {
 		if (port->mapbase == 0)
 			return -ENODEV;
-		port->membase = (unsigned char __iomem *)KSEG1ADDR(port->mapbase);
+		port->membase = ioremap(port->mapbase, siu_port_size(port));
 	}
 
 	vr41xx_select_siu_interface(SIU_INTERFACE_RS232C);
@@ -951,7 +899,7 @@ static int __devinit siu_console_init(void)
 
 	for (i = 0; i < num; i++) {
 		port = &siu_uart_ports[i];
-		port->ops = &early_uart_ops;
+		port->ops = &siu_uart_ops;
 	}
 
 	register_console(&siu_console);
@@ -996,8 +944,10 @@ static int siu_probe(struct device *dev)
 		port->dev = dev;
 
 		retval = uart_add_one_port(&siu_uart_driver, port);
-		if (retval)
+		if (retval < 0) {
+			port->dev = NULL;
 			break;
+		}
 	}
 
 	if (i == 0 && retval < 0) {