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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-08-09 08:52:46 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-08-09 08:52:46 +0200
commit15e580283f2654b3455970c404ae363197aa176d (patch)
tree37bc78756e24830430727aa5f8ac6bfa51f1d766 /drivers/tty
parent1fe0e1fa3209ad8e9124147775bd27b1d9f04bd4 (diff)
parent36a21d51725af2ce0700c6ebcb6b9594aac658a6 (diff)
Merge 5.14-rc5 into tty-next
We need the tty/serial fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/serial/8250/8250_aspeed_vuart.c5
-rw-r--r--drivers/tty/serial/8250/8250_fsl.c5
-rw-r--r--drivers/tty/serial/8250/8250_mtk.c5
-rw-r--r--drivers/tty/serial/8250/8250_pci.c7
-rw-r--r--drivers/tty/serial/8250/8250_port.c17
-rw-r--r--drivers/tty/serial/fsl_lpuart.c2
-rw-r--r--drivers/tty/serial/max310x.c3
-rw-r--r--drivers/tty/serial/serial-tegra.c6
8 files changed, 37 insertions, 13 deletions
diff --git a/drivers/tty/serial/8250/8250_aspeed_vuart.c b/drivers/tty/serial/8250/8250_aspeed_vuart.c
index 4caab8714e2c..2350fb3bb5e4 100644
--- a/drivers/tty/serial/8250/8250_aspeed_vuart.c
+++ b/drivers/tty/serial/8250/8250_aspeed_vuart.c
@@ -329,6 +329,7 @@ static int aspeed_vuart_handle_irq(struct uart_port *port)
{
struct uart_8250_port *up = up_to_u8250p(port);
unsigned int iir, lsr;
+ unsigned long flags;
unsigned int space, count;
iir = serial_port_in(port, UART_IIR);
@@ -336,7 +337,7 @@ static int aspeed_vuart_handle_irq(struct uart_port *port)
if (iir & UART_IIR_NO_INT)
return 0;
- spin_lock(&port->lock);
+ spin_lock_irqsave(&port->lock, flags);
lsr = serial_port_in(port, UART_LSR);
@@ -370,7 +371,7 @@ static int aspeed_vuart_handle_irq(struct uart_port *port)
if (lsr & UART_LSR_THRE)
serial8250_tx_chars(up);
- uart_unlock_and_check_sysrq(port);
+ uart_unlock_and_check_sysrq_irqrestore(port, flags);
return 1;
}
diff --git a/drivers/tty/serial/8250/8250_fsl.c b/drivers/tty/serial/8250/8250_fsl.c
index 4e75d2e4f87c..fc65a2293ce9 100644
--- a/drivers/tty/serial/8250/8250_fsl.c
+++ b/drivers/tty/serial/8250/8250_fsl.c
@@ -30,10 +30,11 @@ struct fsl8250_data {
int fsl8250_handle_irq(struct uart_port *port)
{
unsigned char lsr, orig_lsr;
+ unsigned long flags;
unsigned int iir;
struct uart_8250_port *up = up_to_u8250p(port);
- spin_lock(&up->port.lock);
+ spin_lock_irqsave(&up->port.lock, flags);
iir = port->serial_in(port, UART_IIR);
if (iir & UART_IIR_NO_INT) {
@@ -82,7 +83,7 @@ int fsl8250_handle_irq(struct uart_port *port)
up->lsr_saved_flags = orig_lsr;
- uart_unlock_and_check_sysrq(&up->port);
+ uart_unlock_and_check_sysrq_irqrestore(&up->port, flags);
return 1;
}
diff --git a/drivers/tty/serial/8250/8250_mtk.c b/drivers/tty/serial/8250/8250_mtk.c
index f7d3023f860f..fb65dc601b23 100644
--- a/drivers/tty/serial/8250/8250_mtk.c
+++ b/drivers/tty/serial/8250/8250_mtk.c
@@ -93,10 +93,13 @@ static void mtk8250_dma_rx_complete(void *param)
struct dma_tx_state state;
int copied, total, cnt;
unsigned char *ptr;
+ unsigned long flags;
if (data->rx_status == DMA_RX_SHUTDOWN)
return;
+ spin_lock_irqsave(&up->port.lock, flags);
+
dmaengine_tx_status(dma->rxchan, dma->rx_cookie, &state);
total = dma->rx_size - state.residue;
cnt = total;
@@ -120,6 +123,8 @@ static void mtk8250_dma_rx_complete(void *param)
tty_flip_buffer_push(tty_port);
mtk8250_rx_dma(up);
+
+ spin_unlock_irqrestore(&up->port.lock, flags);
}
static void mtk8250_rx_dma(struct uart_8250_port *up)
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index fe64f77a9789..726912b16a55 100644
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -3836,6 +3836,12 @@ static const struct pci_device_id blacklist[] = {
{ PCI_VDEVICE(INTEL, 0x0f0c), },
{ PCI_VDEVICE(INTEL, 0x228a), },
{ PCI_VDEVICE(INTEL, 0x228c), },
+ { PCI_VDEVICE(INTEL, 0x4b96), },
+ { PCI_VDEVICE(INTEL, 0x4b97), },
+ { PCI_VDEVICE(INTEL, 0x4b98), },
+ { PCI_VDEVICE(INTEL, 0x4b99), },
+ { PCI_VDEVICE(INTEL, 0x4b9a), },
+ { PCI_VDEVICE(INTEL, 0x4b9b), },
{ PCI_VDEVICE(INTEL, 0x9ce3), },
{ PCI_VDEVICE(INTEL, 0x9ce4), },
@@ -3996,6 +4002,7 @@ pciserial_init_ports(struct pci_dev *dev, const struct pciserial_board *board)
if (pci_match_id(pci_use_msi, dev)) {
dev_dbg(&dev->dev, "Using MSI(-X) interrupts\n");
pci_set_master(dev);
+ uart.port.flags &= ~UPF_SHARE_IRQ;
rc = pci_alloc_irq_vectors(dev, 1, 1, PCI_IRQ_ALL_TYPES);
} else {
dev_dbg(&dev->dev, "Using legacy interrupts\n");
diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c
index badf5c320853..66374704747e 100644
--- a/drivers/tty/serial/8250/8250_port.c
+++ b/drivers/tty/serial/8250/8250_port.c
@@ -312,7 +312,11 @@ static const struct serial8250_config uart_config[] = {
/* Uart divisor latch read */
static int default_serial_dl_read(struct uart_8250_port *up)
{
- return serial_in(up, UART_DLL) | serial_in(up, UART_DLM) << 8;
+ /* Assign these in pieces to truncate any bits above 7. */
+ unsigned char dll = serial_in(up, UART_DLL);
+ unsigned char dlm = serial_in(up, UART_DLM);
+
+ return dll | dlm << 8;
}
/* Uart divisor latch write */
@@ -1298,9 +1302,11 @@ static void autoconfig(struct uart_8250_port *up)
serial_out(up, UART_LCR, 0);
serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO);
- scratch = serial_in(up, UART_IIR) >> 6;
- switch (scratch) {
+ /* Assign this as it is to truncate any bits above 7. */
+ scratch = serial_in(up, UART_IIR);
+
+ switch (scratch >> 6) {
case 0:
autoconfig_8250(up);
break;
@@ -1894,11 +1900,12 @@ int serial8250_handle_irq(struct uart_port *port, unsigned int iir)
unsigned char status;
struct uart_8250_port *up = up_to_u8250p(port);
bool skip_rx = false;
+ unsigned long flags;
if (iir & UART_IIR_NO_INT)
return 0;
- spin_lock(&port->lock);
+ spin_lock_irqsave(&port->lock, flags);
status = serial_port_in(port, UART_LSR);
@@ -1924,7 +1931,7 @@ int serial8250_handle_irq(struct uart_port *port, unsigned int iir)
(up->ier & UART_IER_THRI))
serial8250_tx_chars(up);
- uart_unlock_and_check_sysrq(port);
+ uart_unlock_and_check_sysrq_irqrestore(port, flags);
return 1;
}
diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c
index 508128ddfa01..f0e5da77ed6d 100644
--- a/drivers/tty/serial/fsl_lpuart.c
+++ b/drivers/tty/serial/fsl_lpuart.c
@@ -1415,7 +1415,7 @@ static unsigned int lpuart_get_mctrl(struct uart_port *port)
static unsigned int lpuart32_get_mctrl(struct uart_port *port)
{
- unsigned int mctrl = 0;
+ unsigned int mctrl = TIOCM_CAR | TIOCM_DSR | TIOCM_CTS;
u32 reg;
reg = lpuart32_read(port, UARTCTRL);
diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c
index c2929fefce80..3df0788ddeb0 100644
--- a/drivers/tty/serial/max310x.c
+++ b/drivers/tty/serial/max310x.c
@@ -1288,7 +1288,8 @@ static int max310x_probe(struct device *dev, const struct max310x_devtype *devty
freq = uartclk;
if (freq == 0) {
dev_err(dev, "Cannot get clock rate\n");
- return -EINVAL;
+ ret = -EINVAL;
+ goto out_clk;
}
if (xtal) {
diff --git a/drivers/tty/serial/serial-tegra.c b/drivers/tty/serial/serial-tegra.c
index 222032792d6c..eba5b9ecba34 100644
--- a/drivers/tty/serial/serial-tegra.c
+++ b/drivers/tty/serial/serial-tegra.c
@@ -1045,9 +1045,11 @@ static int tegra_uart_hw_init(struct tegra_uart_port *tup)
if (tup->cdata->fifo_mode_enable_status) {
ret = tegra_uart_wait_fifo_mode_enabled(tup);
- dev_err(tup->uport.dev, "FIFO mode not enabled\n");
- if (ret < 0)
+ if (ret < 0) {
+ dev_err(tup->uport.dev,
+ "Failed to enable FIFO mode: %d\n", ret);
return ret;
+ }
} else {
/*
* For all tegra devices (up to t210), there is a hardware