4 files changed, 16 insertions, 8 deletions

diff --git a/drivers/tty/serial/8250/8250_uniphier.c b/drivers/tty/serial/8250/8250_uniphier.c
index d11621e2cf1d..245edbb68d4b 100644
--- a/drivers/tty/serial/8250/8250_uniphier.c
+++ b/drivers/tty/serial/8250/8250_uniphier.c
@@ -115,12 +115,16 @@ static void uniphier_serial_out(struct uart_port *p, int offset, int value)
  */
 static int uniphier_serial_dl_read(struct uart_8250_port *up)
 {
-        return readl(up->port.membase + UNIPHIER_UART_DLR);
+        int offset = UNIPHIER_UART_DLR << up->port.regshift;
+
+        return readl(up->port.membase + offset);
 }
 
 static void uniphier_serial_dl_write(struct uart_8250_port *up, int value)
 {
-        writel(value, up->port.membase + UNIPHIER_UART_DLR);
+        int offset = UNIPHIER_UART_DLR << up->port.regshift;
+
+        writel(value, up->port.membase + offset);
 }
 
 static int uniphier_of_serial_setup(struct device *dev, struct uart_port *port,
diff --git a/drivers/tty/serial/earlycon.c b/drivers/tty/serial/earlycon.c
index f09636083426..b5b2f2be6be7 100644
--- a/drivers/tty/serial/earlycon.c
+++ b/drivers/tty/serial/earlycon.c
@@ -115,6 +115,7 @@ static int __init register_earlycon(char *buf, const struct earlycon_id *match)
         if (buf && !parse_options(&early_console_dev, buf))
                 buf = NULL;
 
+        spin_lock_init(&port->lock);
         port->uartclk = BASE_BAUD * 16;
         if (port->mapbase)
                 port->membase = earlycon_map(port->mapbase, 64);
@@ -202,6 +203,7 @@ int __init of_setup_earlycon(unsigned long addr,
         int err;
         struct uart_port *port = &early_console_dev.port;
 
+        spin_lock_init(&port->lock);
         port->iotype = UPIO_MEM;
         port->mapbase = addr;
         port->uartclk = BASE_BAUD * 16;
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 960e50a97558..51c7507b0444 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -1437,7 +1437,7 @@ static void sci_request_dma(struct uart_port *port)
                         sg_init_table(sg, 1);
                         s->rx_buf[i] = buf;
                         sg_dma_address(sg) = dma;
-                        sg->length = s->buf_len_rx;
+                        sg_dma_len(sg) = s->buf_len_rx;
 
                         buf += s->buf_len_rx;
                         dma += s->buf_len_rx;
diff --git a/drivers/tty/serial/sunhv.c b/drivers/tty/serial/sunhv.c
index 064031870ba0..ca0d3802f2af 100644
--- a/drivers/tty/serial/sunhv.c
+++ b/drivers/tty/serial/sunhv.c
@@ -148,8 +148,10 @@ static int receive_chars_read(struct uart_port *port)
                         uart_handle_dcd_change(port, 1);
                 }
 
-                for (i = 0; i < bytes_read; i++)
-                        uart_handle_sysrq_char(port, con_read_page[i]);
+                if (port->sysrq != 0 &&  *con_read_page) {
+                        for (i = 0; i < bytes_read; i++)
+                                uart_handle_sysrq_char(port, con_read_page[i]);
+                }
 
                 if (port->state == NULL)
                         continue;
@@ -168,17 +170,17 @@ struct sunhv_ops {
         int (*receive_chars)(struct uart_port *port);
 };
 
-static struct sunhv_ops bychar_ops = {
+static const struct sunhv_ops bychar_ops = {
         .transmit_chars = transmit_chars_putchar,
         .receive_chars = receive_chars_getchar,
 };
 
-static struct sunhv_ops bywrite_ops = {
+static const struct sunhv_ops bywrite_ops = {
         .transmit_chars = transmit_chars_write,
         .receive_chars = receive_chars_read,
 };
 
-static struct sunhv_ops *sunhv_ops = &bychar_ops;
+static const struct sunhv_ops *sunhv_ops = &bychar_ops;
 
 static struct tty_port *receive_chars(struct uart_port *port)
 {