Merge 6.3-rc5 into driver-core-next

We need the fixes in here for testing, as well as the driver core
changes for documentation updates to build on.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

10 files changed, 50 insertions, 28 deletions

diff --git a/drivers/tty/hvc/hvc_xen.c b/drivers/tty/hvc/hvc_xen.c
index 5bddb2f5e931..98764e740c07 100644
--- a/drivers/tty/hvc/hvc_xen.c
+++ b/drivers/tty/hvc/hvc_xen.c
@@ -43,6 +43,7 @@ struct xencons_info {
 	int irq;
 	int vtermno;
 	grant_ref_t gntref;
+	spinlock_t ring_lock;
 };
 
 static LIST_HEAD(xenconsoles);
@@ -89,12 +90,15 @@ static int __write_console(struct xencons_info *xencons,
 	XENCONS_RING_IDX cons, prod;
 	struct xencons_interface *intf = xencons->intf;
 	int sent = 0;
+	unsigned long flags;
 
+	spin_lock_irqsave(&xencons->ring_lock, flags);
 	cons = intf->out_cons;
 	prod = intf->out_prod;
 	mb();			/* update queue values before going on */
 
 	if ((prod - cons) > sizeof(intf->out)) {
+		spin_unlock_irqrestore(&xencons->ring_lock, flags);
 		pr_err_once("xencons: Illegal ring page indices");
 		return -EINVAL;
 	}
@@ -104,6 +108,7 @@ static int __write_console(struct xencons_info *xencons,
 
 	wmb();			/* write ring before updating pointer */
 	intf->out_prod = prod;
+	spin_unlock_irqrestore(&xencons->ring_lock, flags);
 
 	if (sent)
 		notify_daemon(xencons);
@@ -146,16 +151,19 @@ static int domU_read_console(uint32_t vtermno, char *buf, int len)
 	int recv = 0;
 	struct xencons_info *xencons = vtermno_to_xencons(vtermno);
 	unsigned int eoiflag = 0;
+	unsigned long flags;
 
 	if (xencons == NULL)
 		return -EINVAL;
 	intf = xencons->intf;
 
+	spin_lock_irqsave(&xencons->ring_lock, flags);
 	cons = intf->in_cons;
 	prod = intf->in_prod;
 	mb();			/* get pointers before reading ring */
 
 	if ((prod - cons) > sizeof(intf->in)) {
+		spin_unlock_irqrestore(&xencons->ring_lock, flags);
 		pr_err_once("xencons: Illegal ring page indices");
 		return -EINVAL;
 	}
@@ -179,10 +187,13 @@ static int domU_read_console(uint32_t vtermno, char *buf, int len)
 		xencons->out_cons = intf->out_cons;
 		xencons->out_cons_same = 0;
 	}
+	if (!recv && xencons->out_cons_same++ > 1) {
+		eoiflag = XEN_EOI_FLAG_SPURIOUS;
+	}
+	spin_unlock_irqrestore(&xencons->ring_lock, flags);
+
 	if (recv) {
 		notify_daemon(xencons);
-	} else if (xencons->out_cons_same++ > 1) {
-		eoiflag = XEN_EOI_FLAG_SPURIOUS;
 	}
 
 	xen_irq_lateeoi(xencons->irq, eoiflag);
@@ -239,6 +250,7 @@ static int xen_hvm_console_init(void)
 		info = kzalloc(sizeof(struct xencons_info), GFP_KERNEL);
 		if (!info)
 			return -ENOMEM;
+		spin_lock_init(&info->ring_lock);
 	} else if (info->intf != NULL) {
 		/* already configured */
 		return 0;
@@ -275,6 +287,7 @@ err:
 
 static int xencons_info_pv_init(struct xencons_info *info, int vtermno)
 {
+	spin_lock_init(&info->ring_lock);
 	info->evtchn = xen_start_info->console.domU.evtchn;
 	/* GFN == MFN for PV guest */
 	info->intf = gfn_to_virt(xen_start_info->console.domU.mfn);
@@ -325,6 +338,7 @@ static int xen_initial_domain_console_init(void)
 		info = kzalloc(sizeof(struct xencons_info), GFP_KERNEL);
 		if (!info)
 			return -ENOMEM;
+		spin_lock_init(&info->ring_lock);
 	}
 
 	info->irq = bind_virq_to_irq(VIRQ_CONSOLE, 0, false);
@@ -482,6 +496,7 @@ static int xencons_probe(struct xenbus_device *dev,
 	info = kzalloc(sizeof(struct xencons_info), GFP_KERNEL);
 	if (!info)
 		return -ENOMEM;
+	spin_lock_init(&info->ring_lock);
 	dev_set_drvdata(&dev->dev, info);
 	info->xbdev = dev;
 	info->vtermno = xenbus_devid_to_vtermno(devid);
diff --git a/drivers/tty/serdev/core.c b/drivers/tty/serdev/core.c
index aa80de3a8194..678014253b7b 100644
--- a/drivers/tty/serdev/core.c
+++ b/drivers/tty/serdev/core.c
@@ -534,7 +534,7 @@ static int of_serdev_register_devices(struct serdev_controller *ctrl)
 		if (!serdev)
 			continue;
 
-		serdev->dev.of_node = node;
+		device_set_node(&serdev->dev, of_fwnode_handle(node));
 
 		err = serdev_device_add(serdev);
 		if (err) {
diff --git a/drivers/tty/serial/8250/8250_em.c b/drivers/tty/serial/8250/8250_em.c
index f8e99995eee9..d94c3811a8f7 100644
--- a/drivers/tty/serial/8250/8250_em.c
+++ b/drivers/tty/serial/8250/8250_em.c
@@ -106,8 +106,8 @@ static int serial8250_em_probe(struct platform_device *pdev)
 	memset(&up, 0, sizeof(up));
 	up.port.mapbase = regs->start;
 	up.port.irq = irq;
-	up.port.type = PORT_UNKNOWN;
-	up.port.flags = UPF_BOOT_AUTOCONF | UPF_FIXED_PORT | UPF_IOREMAP;
+	up.port.type = PORT_16750;
+	up.port.flags = UPF_FIXED_PORT | UPF_IOREMAP | UPF_FIXED_TYPE;
 	up.port.dev = &pdev->dev;
 	up.port.private_data = priv;
 
diff --git a/drivers/tty/serial/8250/8250_fsl.c b/drivers/tty/serial/8250/8250_fsl.c
index 8aad15622a2e..8adfaa183f77 100644
--- a/drivers/tty/serial/8250/8250_fsl.c
+++ b/drivers/tty/serial/8250/8250_fsl.c
@@ -34,7 +34,7 @@ int fsl8250_handle_irq(struct uart_port *port)
 
 	iir = port->serial_in(port, UART_IIR);
 	if (iir & UART_IIR_NO_INT) {
-		spin_unlock(&up->port.lock);
+		spin_unlock_irqrestore(&up->port.lock, flags);
 		return 0;
 	}
 
@@ -42,7 +42,7 @@ int fsl8250_handle_irq(struct uart_port *port)
 	if (unlikely(up->lsr_saved_flags & UART_LSR_BI)) {
 		up->lsr_saved_flags &= ~UART_LSR_BI;
 		port->serial_in(port, UART_RX);
-		spin_unlock(&up->port.lock);
+		spin_unlock_irqrestore(&up->port.lock, flags);
 		return 1;
 	}
 
diff --git a/drivers/tty/serial/8250/Kconfig b/drivers/tty/serial/8250/Kconfig
index 978dc196c29b..5313aa31930f 100644
--- a/drivers/tty/serial/8250/Kconfig
+++ b/drivers/tty/serial/8250/Kconfig
@@ -257,8 +257,9 @@ config SERIAL_8250_ASPEED_VUART
 	tristate "Aspeed Virtual UART"
 	depends on SERIAL_8250
 	depends on OF
-	depends on REGMAP && MFD_SYSCON
+	depends on MFD_SYSCON
 	depends on ARCH_ASPEED || COMPILE_TEST
+	select REGMAP
 	help
 	  If you want to use the virtual UART (VUART) device on Aspeed
 	  BMC platforms, enable this option. This enables the 16550A-
@@ -299,7 +300,6 @@ config SERIAL_8250_PCI1XXXX
 	tristate "Microchip 8250 based serial port"
 	depends on SERIAL_8250 && PCI
 	select SERIAL_8250_PCILIB
-	default SERIAL_8250
 	help
 	 Select this option if you have a setup with Microchip PCIe
 	 Switch with serial port enabled and wish to enable 8250
diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index 625358f44419..0072892ca7fc 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -1313,7 +1313,7 @@ config SERIAL_FSL_LPUART
 
 config SERIAL_FSL_LPUART_CONSOLE
 	bool "Console on Freescale lpuart serial port"
-	depends on SERIAL_FSL_LPUART
+	depends on SERIAL_FSL_LPUART=y
 	select SERIAL_CORE_CONSOLE
 	select SERIAL_EARLYCON
 	help
diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c
index e945f41b93d4..56e6ba3250cd 100644
--- a/drivers/tty/serial/fsl_lpuart.c
+++ b/drivers/tty/serial/fsl_lpuart.c
@@ -1354,6 +1354,7 @@ static void lpuart_dma_rx_free(struct uart_port *port)
 	struct dma_chan *chan = sport->dma_rx_chan;
 
 	dmaengine_terminate_sync(chan);
+	del_timer_sync(&sport->lpuart_timer);
 	dma_unmap_sg(chan->device->dev, &sport->rx_sgl, 1, DMA_FROM_DEVICE);
 	kfree(sport->rx_ring.buf);
 	sport->rx_ring.tail = 0;
@@ -1813,7 +1814,6 @@ static int lpuart32_startup(struct uart_port *port)
 static void lpuart_dma_shutdown(struct lpuart_port *sport)
 {
 	if (sport->lpuart_dma_rx_use) {
-		del_timer_sync(&sport->lpuart_timer);
 		lpuart_dma_rx_free(&sport->port);
 		sport->lpuart_dma_rx_use = false;
 	}
@@ -1973,10 +1973,8 @@ lpuart_set_termios(struct uart_port *port, struct ktermios *termios,
 	 * Since timer function acqures sport->port.lock, need to stop before
 	 * acquring same lock because otherwise del_timer_sync() can deadlock.
 	 */
-	if (old && sport->lpuart_dma_rx_use) {
-		del_timer_sync(&sport->lpuart_timer);
+	if (old && sport->lpuart_dma_rx_use)
 		lpuart_dma_rx_free(&sport->port);
-	}
 
 	spin_lock_irqsave(&sport->port.lock, flags);
 
@@ -2210,10 +2208,8 @@ lpuart32_set_termios(struct uart_port *port, struct ktermios *termios,
 	 * Since timer function acqures sport->port.lock, need to stop before
 	 * acquring same lock because otherwise del_timer_sync() can deadlock.
 	 */
-	if (old && sport->lpuart_dma_rx_use) {
-		del_timer_sync(&sport->lpuart_timer);
+	if (old && sport->lpuart_dma_rx_use)
 		lpuart_dma_rx_free(&sport->port);
-	}
 
 	spin_lock_irqsave(&sport->port.lock, flags);
 
@@ -2240,9 +2236,15 @@ lpuart32_set_termios(struct uart_port *port, struct ktermios *termios,
 	/* update the per-port timeout */
 	uart_update_timeout(port, termios->c_cflag, baud);
 
-	/* wait transmit engin complete */
-	lpuart32_write(&sport->port, 0, UARTMODIR);
-	lpuart32_wait_bit_set(&sport->port, UARTSTAT, UARTSTAT_TC);
+	/*
+	 * LPUART Transmission Complete Flag may never be set while queuing a break
+	 * character, so skip waiting for transmission complete when UARTCTRL_SBK is
+	 * asserted.
+	 */
+	if (!(old_ctrl & UARTCTRL_SBK)) {
+		lpuart32_write(&sport->port, 0, UARTMODIR);
+		lpuart32_wait_bit_set(&sport->port, UARTSTAT, UARTSTAT_TC);
+	}
 
 	/* disable transmit and receive */
 	lpuart32_write(&sport->port, old_ctrl & ~(UARTCTRL_TE | UARTCTRL_RE),
@@ -3014,7 +3016,6 @@ static int lpuart_suspend(struct device *dev)
 			 * cannot resume as expected, hence gracefully release the
 			 * Rx DMA path before suspend and start Rx DMA path on resume.
 			 */
-			del_timer_sync(&sport->lpuart_timer);
 			lpuart_dma_rx_free(&sport->port);
 
 			/* Disable Rx DMA to use UART port as wakeup source */
diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c
index d69592e5e2ec..28fbc927a546 100644
--- a/drivers/tty/serial/qcom_geni_serial.c
+++ b/drivers/tty/serial/qcom_geni_serial.c
@@ -596,7 +596,7 @@ static void qcom_geni_serial_stop_tx_dma(struct uart_port *uport)
 	if (!qcom_geni_serial_main_active(uport))
 		return;
 
-	if (port->rx_dma_addr) {
+	if (port->tx_dma_addr) {
 		geni_se_tx_dma_unprep(&port->se, port->tx_dma_addr,
 				      port->tx_remaining);
 		port->tx_dma_addr = 0;
@@ -631,9 +631,8 @@ static void qcom_geni_serial_start_tx_dma(struct uart_port *uport)
 	if (port->tx_dma_addr)
 		return;
 
-	xmit_size = uart_circ_chars_pending(xmit);
-	if (xmit_size < WAKEUP_CHARS)
-		uart_write_wakeup(uport);
+	if (uart_circ_empty(xmit))
+		return;
 
 	xmit_size = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE);
 
@@ -1070,6 +1069,10 @@ static int setup_fifos(struct qcom_geni_serial_port *port)
 static void qcom_geni_serial_shutdown(struct uart_port *uport)
 {
 	disable_irq(uport->irq);
+
+	if (uart_console(uport))
+		return;
+
 	qcom_geni_serial_stop_tx(uport);
 	qcom_geni_serial_stop_rx(uport);
 }
diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c
index 29c94be09159..abad091baeea 100644
--- a/drivers/tty/serial/sc16is7xx.c
+++ b/drivers/tty/serial/sc16is7xx.c
@@ -1666,9 +1666,9 @@ MODULE_ALIAS("spi:sc16is7xx");
 #endif
 
 #ifdef CONFIG_SERIAL_SC16IS7XX_I2C
-static int sc16is7xx_i2c_probe(struct i2c_client *i2c,
-			       const struct i2c_device_id *id)
+static int sc16is7xx_i2c_probe(struct i2c_client *i2c)
 {
+	const struct i2c_device_id *id = i2c_client_get_device_id(i2c);
 	const struct sc16is7xx_devtype *devtype;
 	struct regmap *regmap;
 
@@ -1709,7 +1709,7 @@ static struct i2c_driver sc16is7xx_i2c_uart_driver = {
 		.name		= SC16IS7XX_NAME,
 		.of_match_table	= sc16is7xx_dt_ids,
 	},
-	.probe		= sc16is7xx_i2c_probe,
+	.probe_new	= sc16is7xx_i2c_probe,
 	.remove		= sc16is7xx_i2c_remove,
 	.id_table	= sc16is7xx_i2c_id_table,
 };
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index 5496bf4b76ec..81c148064aa6 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -4545,6 +4545,9 @@ static int con_font_get(struct vc_data *vc, struct console_font_op *op)
 	int c;
 	unsigned int vpitch = op->op == KD_FONT_OP_GET_TALL ? op->height : 32;
 
+	if (vpitch > max_font_height)
+		return -EINVAL;
+
 	if (op->data) {
 		font.data = kvmalloc(max_font_size, GFP_KERNEL);
 		if (!font.data)