Merging upstream version 6.7.7.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 55 insertions, 63 deletions

diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c
index 141627370a..8ca061d3bb 100644
--- a/drivers/tty/serial/8250/8250_port.c
+++ b/drivers/tty/serial/8250/8250_port.c
@@ -170,13 +170,6 @@ static const struct serial8250_config uart_config[] = {
 		.fcr		= UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10,
 		.flags		= UART_CAP_FIFO,
 	},
-	[PORT_AR7] = {
-		.name		= "AR7",
-		.fifo_size	= 16,
-		.tx_loadsz	= 16,
-		.fcr		= UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_00,
-		.flags		= UART_CAP_FIFO /* | UART_CAP_AFE */,
-	},
 	[PORT_U6_16550A] = {
 		.name		= "U6_16550A",
 		.fifo_size	= 64,
@@ -689,7 +682,7 @@ static void serial8250_set_sleep(struct uart_8250_port *p, int sleep)
 
 	if (p->capabilities & UART_CAP_SLEEP) {
 		/* Synchronize UART_IER access against the console. */
-		spin_lock_irq(&p->port.lock);
+		uart_port_lock_irq(&p->port);
 		if (p->capabilities & UART_CAP_EFR) {
 			lcr = serial_in(p, UART_LCR);
 			efr = serial_in(p, UART_EFR);
@@ -703,7 +696,7 @@ static void serial8250_set_sleep(struct uart_8250_port *p, int sleep)
 			serial_out(p, UART_EFR, efr);
 			serial_out(p, UART_LCR, lcr);
 		}
-		spin_unlock_irq(&p->port.lock);
+		uart_port_unlock_irq(&p->port);
 	}
 
 	serial8250_rpm_put(p);
@@ -746,9 +739,9 @@ static void enable_rsa(struct uart_8250_port *up)
 {
 	if (up->port.type == PORT_RSA) {
 		if (up->port.uartclk != SERIAL_RSA_BAUD_BASE * 16) {
-			spin_lock_irq(&up->port.lock);
+			uart_port_lock_irq(&up->port);
 			__enable_rsa(up);
-			spin_unlock_irq(&up->port.lock);
+			uart_port_unlock_irq(&up->port);
 		}
 		if (up->port.uartclk == SERIAL_RSA_BAUD_BASE * 16)
 			serial_out(up, UART_RSA_FRR, 0);
@@ -768,7 +761,7 @@ static void disable_rsa(struct uart_8250_port *up)
 
 	if (up->port.type == PORT_RSA &&
 	    up->port.uartclk == SERIAL_RSA_BAUD_BASE * 16) {
-		spin_lock_irq(&up->port.lock);
+		uart_port_lock_irq(&up->port);
 
 		mode = serial_in(up, UART_RSA_MSR);
 		result = !(mode & UART_RSA_MSR_FIFO);
@@ -781,7 +774,7 @@ static void disable_rsa(struct uart_8250_port *up)
 
 		if (result)
 			up->port.uartclk = SERIAL_RSA_BAUD_BASE_LO * 16;
-		spin_unlock_irq(&up->port.lock);
+		uart_port_unlock_irq(&up->port);
 	}
 }
 #endif /* CONFIG_SERIAL_8250_RSA */
@@ -1008,12 +1001,11 @@ static void autoconfig_16550a(struct uart_8250_port *up)
 			serial_out(up, UART_LCR, 0);
 			serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO |
 				   UART_FCR7_64BYTE);
-			status1 = serial_in(up, UART_IIR) & (UART_IIR_64BYTE_FIFO |
-							     UART_IIR_FIFO_ENABLED);
+			status1 = serial_in(up, UART_IIR) & UART_IIR_FIFO_ENABLED_16750;
 			serial_out(up, UART_FCR, 0);
 			serial_out(up, UART_LCR, 0);
 
-			if (status1 == (UART_IIR_64BYTE_FIFO | UART_IIR_FIFO_ENABLED))
+			if (status1 == UART_IIR_FIFO_ENABLED_16750)
 				up->port.type = PORT_16550A_FSL64;
 			else
 				DEBUG_AUTOCONF("Motorola 8xxx DUART ");
@@ -1081,12 +1073,12 @@ static void autoconfig_16550a(struct uart_8250_port *up)
 	 */
 	serial_out(up, UART_LCR, 0);
 	serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE);
-	status1 = serial_in(up, UART_IIR) & (UART_IIR_64BYTE_FIFO | UART_IIR_FIFO_ENABLED);
+	status1 = serial_in(up, UART_IIR) & UART_IIR_FIFO_ENABLED_16750;
 	serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO);
 
 	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A);
 	serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE);
-	status2 = serial_in(up, UART_IIR) & (UART_IIR_64BYTE_FIFO | UART_IIR_FIFO_ENABLED);
+	status2 = serial_in(up, UART_IIR) & UART_IIR_FIFO_ENABLED_16750;
 	serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO);
 
 	serial_out(up, UART_LCR, 0);
@@ -1094,7 +1086,7 @@ static void autoconfig_16550a(struct uart_8250_port *up)
 	DEBUG_AUTOCONF("iir1=%d iir2=%d ", status1, status2);
 
 	if (status1 == UART_IIR_FIFO_ENABLED_16550A &&
-	    status2 == (UART_IIR_64BYTE_FIFO | UART_IIR_FIFO_ENABLED_16550A)) {
+	    status2 == UART_IIR_FIFO_ENABLED_16750) {
 		up->port.type = PORT_16750;
 		up->capabilities |= UART_CAP_AFE | UART_CAP_SLEEP;
 		return;
@@ -1172,7 +1164,7 @@ static void autoconfig(struct uart_8250_port *up)
 	 *
 	 * Synchronize UART_IER access against the console.
 	 */
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 
 	up->capabilities = 0;
 	up->bugs = 0;
@@ -1211,7 +1203,7 @@ static void autoconfig(struct uart_8250_port *up)
 			/*
 			 * We failed; there's nothing here
 			 */
-			spin_unlock_irqrestore(&port->lock, flags);
+			uart_port_unlock_irqrestore(port, flags);
 			DEBUG_AUTOCONF("IER test failed (%02x, %02x) ",
 				       scratch2, scratch3);
 			goto out;
@@ -1235,7 +1227,7 @@ static void autoconfig(struct uart_8250_port *up)
 		status1 = serial_in(up, UART_MSR) & UART_MSR_STATUS_BITS;
 		serial8250_out_MCR(up, save_mcr);
 		if (status1 != (UART_MSR_DCD | UART_MSR_CTS)) {
-			spin_unlock_irqrestore(&port->lock, flags);
+			uart_port_unlock_irqrestore(port, flags);
 			DEBUG_AUTOCONF("LOOP test failed (%02x) ",
 				       status1);
 			goto out;
@@ -1304,7 +1296,7 @@ static void autoconfig(struct uart_8250_port *up)
 	serial8250_clear_IER(up);
 
 out_unlock:
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 
 	/*
 	 * Check if the device is a Fintek F81216A
@@ -1344,9 +1336,9 @@ static void autoconfig_irq(struct uart_8250_port *up)
 	probe_irq_off(probe_irq_on());
 	save_mcr = serial8250_in_MCR(up);
 	/* Synchronize UART_IER access against the console. */
-	spin_lock_irq(&port->lock);
+	uart_port_lock_irq(port);
 	save_ier = serial_in(up, UART_IER);
-	spin_unlock_irq(&port->lock);
+	uart_port_unlock_irq(port);
 	serial8250_out_MCR(up, UART_MCR_OUT1 | UART_MCR_OUT2);
 
 	irqs = probe_irq_on();
@@ -1359,9 +1351,9 @@ static void autoconfig_irq(struct uart_8250_port *up)
 			UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2);
 	}
 	/* Synchronize UART_IER access against the console. */
-	spin_lock_irq(&port->lock);
+	uart_port_lock_irq(port);
 	serial_out(up, UART_IER, UART_IER_ALL_INTR);
-	spin_unlock_irq(&port->lock);
+	uart_port_unlock_irq(port);
 	serial_in(up, UART_LSR);
 	serial_in(up, UART_RX);
 	serial_in(up, UART_IIR);
@@ -1372,9 +1364,9 @@ static void autoconfig_irq(struct uart_8250_port *up)
 
 	serial8250_out_MCR(up, save_mcr);
 	/* Synchronize UART_IER access against the console. */
-	spin_lock_irq(&port->lock);
+	uart_port_lock_irq(port);
 	serial_out(up, UART_IER, save_ier);
-	spin_unlock_irq(&port->lock);
+	uart_port_unlock_irq(port);
 
 	if (port->flags & UPF_FOURPORT)
 		outb_p(save_ICP, ICP);
@@ -1442,13 +1434,13 @@ static enum hrtimer_restart serial8250_em485_handle_stop_tx(struct hrtimer *t)
 	unsigned long flags;
 
 	serial8250_rpm_get(p);
-	spin_lock_irqsave(&p->port.lock, flags);
+	uart_port_lock_irqsave(&p->port, &flags);
 	if (em485->active_timer == &em485->stop_tx_timer) {
 		p->rs485_stop_tx(p);
 		em485->active_timer = NULL;
 		em485->tx_stopped = true;
 	}
-	spin_unlock_irqrestore(&p->port.lock, flags);
+	uart_port_unlock_irqrestore(&p->port, flags);
 	serial8250_rpm_put(p);
 
 	return HRTIMER_NORESTART;
@@ -1630,12 +1622,12 @@ static enum hrtimer_restart serial8250_em485_handle_start_tx(struct hrtimer *t)
 	struct uart_8250_port *p = em485->port;
 	unsigned long flags;
 
-	spin_lock_irqsave(&p->port.lock, flags);
+	uart_port_lock_irqsave(&p->port, &flags);
 	if (em485->active_timer == &em485->start_tx_timer) {
 		__start_tx(&p->port);
 		em485->active_timer = NULL;
 	}
-	spin_unlock_irqrestore(&p->port.lock, flags);
+	uart_port_unlock_irqrestore(&p->port, flags);
 
 	return HRTIMER_NORESTART;
 }
@@ -1918,7 +1910,7 @@ int serial8250_handle_irq(struct uart_port *port, unsigned int iir)
 	if (iir & UART_IIR_NO_INT)
 		return 0;
 
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 
 	status = serial_lsr_in(up);
 
@@ -1988,9 +1980,9 @@ static int serial8250_tx_threshold_handle_irq(struct uart_port *port)
 	if ((iir & UART_IIR_ID) == UART_IIR_THRI) {
 		struct uart_8250_port *up = up_to_u8250p(port);
 
-		spin_lock_irqsave(&port->lock, flags);
+		uart_port_lock_irqsave(port, &flags);
 		serial8250_tx_chars(up);
-		spin_unlock_irqrestore(&port->lock, flags);
+		uart_port_unlock_irqrestore(port, flags);
 	}
 
 	iir = serial_port_in(port, UART_IIR);
@@ -2005,10 +1997,10 @@ static unsigned int serial8250_tx_empty(struct uart_port *port)
 
 	serial8250_rpm_get(up);
 
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 	if (!serial8250_tx_dma_running(up) && uart_lsr_tx_empty(serial_lsr_in(up)))
 		result = TIOCSER_TEMT;
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 
 	serial8250_rpm_put(up);
 
@@ -2070,13 +2062,13 @@ static void serial8250_break_ctl(struct uart_port *port, int break_state)
 	unsigned long flags;
 
 	serial8250_rpm_get(up);
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 	if (break_state == -1)
 		up->lcr |= UART_LCR_SBC;
 	else
 		up->lcr &= ~UART_LCR_SBC;
 	serial_port_out(port, UART_LCR, up->lcr);
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 	serial8250_rpm_put(up);
 }
 
@@ -2211,7 +2203,7 @@ int serial8250_do_startup(struct uart_port *port)
 		 *
 		 * Synchronize UART_IER access against the console.
 		 */
-		spin_lock_irqsave(&port->lock, flags);
+		uart_port_lock_irqsave(port, &flags);
 		up->acr = 0;
 		serial_port_out(port, UART_LCR, UART_LCR_CONF_MODE_B);
 		serial_port_out(port, UART_EFR, UART_EFR_ECB);
@@ -2221,7 +2213,7 @@ int serial8250_do_startup(struct uart_port *port)
 		serial_port_out(port, UART_LCR, UART_LCR_CONF_MODE_B);
 		serial_port_out(port, UART_EFR, UART_EFR_ECB);
 		serial_port_out(port, UART_LCR, 0);
-		spin_unlock_irqrestore(&port->lock, flags);
+		uart_port_unlock_irqrestore(port, flags);
 	}
 
 	if (port->type == PORT_DA830) {
@@ -2230,10 +2222,10 @@ int serial8250_do_startup(struct uart_port *port)
 		 *
 		 * Synchronize UART_IER access against the console.
 		 */
-		spin_lock_irqsave(&port->lock, flags);
+		uart_port_lock_irqsave(port, &flags);
 		serial_port_out(port, UART_IER, 0);
 		serial_port_out(port, UART_DA830_PWREMU_MGMT, 0);
-		spin_unlock_irqrestore(&port->lock, flags);
+		uart_port_unlock_irqrestore(port, flags);
 		mdelay(10);
 
 		/* Enable Tx, Rx and free run mode */
@@ -2347,7 +2339,7 @@ int serial8250_do_startup(struct uart_port *port)
 		 *
 		 * Synchronize UART_IER access against the console.
 		 */
-		spin_lock_irqsave(&port->lock, flags);
+		uart_port_lock_irqsave(port, &flags);
 
 		wait_for_xmitr(up, UART_LSR_THRE);
 		serial_port_out_sync(port, UART_IER, UART_IER_THRI);
@@ -2359,7 +2351,7 @@ int serial8250_do_startup(struct uart_port *port)
 		iir = serial_port_in(port, UART_IIR);
 		serial_port_out(port, UART_IER, 0);
 
-		spin_unlock_irqrestore(&port->lock, flags);
+		uart_port_unlock_irqrestore(port, flags);
 
 		if (port->irqflags & IRQF_SHARED)
 			enable_irq(port->irq);
@@ -2382,7 +2374,7 @@ int serial8250_do_startup(struct uart_port *port)
 	 */
 	serial_port_out(port, UART_LCR, UART_LCR_WLEN8);
 
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 	if (up->port.flags & UPF_FOURPORT) {
 		if (!up->port.irq)
 			up->port.mctrl |= TIOCM_OUT1;
@@ -2428,7 +2420,7 @@ int serial8250_do_startup(struct uart_port *port)
 	}
 
 dont_test_tx_en:
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 
 	/*
 	 * Clear the interrupt registers again for luck, and clear the
@@ -2499,17 +2491,17 @@ void serial8250_do_shutdown(struct uart_port *port)
 	 *
 	 * Synchronize UART_IER access against the console.
 	 */
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 	up->ier = 0;
 	serial_port_out(port, UART_IER, 0);
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 
 	synchronize_irq(port->irq);
 
 	if (up->dma)
 		serial8250_release_dma(up);
 
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 	if (port->flags & UPF_FOURPORT) {
 		/* reset interrupts on the AST Fourport board */
 		inb((port->iobase & 0xfe0) | 0x1f);
@@ -2518,7 +2510,7 @@ void serial8250_do_shutdown(struct uart_port *port)
 		port->mctrl &= ~TIOCM_OUT2;
 
 	serial8250_set_mctrl(port, port->mctrl);
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 
 	/*
 	 * Disable break condition and FIFOs
@@ -2754,14 +2746,14 @@ void serial8250_update_uartclk(struct uart_port *port, unsigned int uartclk)
 	quot = serial8250_get_divisor(port, baud, &frac);
 
 	serial8250_rpm_get(up);
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 
 	uart_update_timeout(port, termios->c_cflag, baud);
 
 	serial8250_set_divisor(port, baud, quot, frac);
 	serial_port_out(port, UART_LCR, up->lcr);
 
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 	serial8250_rpm_put(up);
 
 out_unlock:
@@ -2798,7 +2790,7 @@ serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios,
 	 * Synchronize UART_IER access against the console.
 	 */
 	serial8250_rpm_get(up);
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 
 	up->lcr = cval;					/* Save computed LCR */
 
@@ -2901,7 +2893,7 @@ serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios,
 		serial_port_out(port, UART_FCR, up->fcr);	/* set fcr */
 	}
 	serial8250_set_mctrl(port, port->mctrl);
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 	serial8250_rpm_put(up);
 
 	/* Don't rewrite B0 */
@@ -2924,15 +2916,15 @@ void serial8250_do_set_ldisc(struct uart_port *port, struct ktermios *termios)
 {
 	if (termios->c_line == N_PPS) {
 		port->flags |= UPF_HARDPPS_CD;
-		spin_lock_irq(&port->lock);
+		uart_port_lock_irq(port);
 		serial8250_enable_ms(port);
-		spin_unlock_irq(&port->lock);
+		uart_port_unlock_irq(port);
 	} else {
 		port->flags &= ~UPF_HARDPPS_CD;
 		if (!UART_ENABLE_MS(port, termios->c_cflag)) {
-			spin_lock_irq(&port->lock);
+			uart_port_lock_irq(port);
 			serial8250_disable_ms(port);
-			spin_unlock_irq(&port->lock);
+			uart_port_unlock_irq(port);
 		}
 	}
 }
@@ -3406,9 +3398,9 @@ void serial8250_console_write(struct uart_8250_port *up, const char *s,
 	touch_nmi_watchdog();
 
 	if (oops_in_progress)
-		locked = spin_trylock_irqsave(&port->lock, flags);
+		locked = uart_port_trylock_irqsave(port, &flags);
 	else
-		spin_lock_irqsave(&port->lock, flags);
+		uart_port_lock_irqsave(port, &flags);
 
 	/*
 	 *	First save the IER then disable the interrupts
@@ -3478,7 +3470,7 @@ void serial8250_console_write(struct uart_8250_port *up, const char *s,
 		serial8250_modem_status(up);
 
 	if (locked)
-		spin_unlock_irqrestore(&port->lock, flags);
+		uart_port_unlock_irqrestore(port, flags);
 }
 
 static unsigned int probe_baud(struct uart_port *port)