6 files changed, 22 insertions, 6 deletions

diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index dff75dc94731..8b752e895053 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -1165,7 +1165,6 @@ static void imx_uart_clear_rx_errors(struct imx_port *sport)
                         sport->port.icount.buf_overrun++;
                 tty_flip_buffer_push(port);
         } else {
-                dev_err(sport->port.dev, "DMA transaction error.\n");
                 if (usr1 & USR1_FRAMERR) {
                         sport->port.icount.frame++;
                         imx_uart_writel(sport, USR1_FRAMERR, USR1);
diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c
index 450ba6d7996c..e5aebbf5f302 100644
--- a/drivers/tty/serial/max310x.c
+++ b/drivers/tty/serial/max310x.c
@@ -581,7 +581,7 @@ static int max310x_set_ref_clk(struct device *dev, struct max310x_port *s,
         }
 
         /* Configure clock source */
-        clksrc = xtal ? MAX310X_CLKSRC_CRYST_BIT : MAX310X_CLKSRC_EXTCLK_BIT;
+        clksrc = MAX310X_CLKSRC_EXTCLK_BIT | (xtal ? MAX310X_CLKSRC_CRYST_BIT : 0);
 
         /* Configure PLL */
         if (pllcfg) {
diff --git a/drivers/tty/serial/msm_serial.c b/drivers/tty/serial/msm_serial.c
index 109096033bb1..23833ad952ba 100644
--- a/drivers/tty/serial/msm_serial.c
+++ b/drivers/tty/serial/msm_serial.c
@@ -860,6 +860,7 @@ static void msm_handle_tx(struct uart_port *port)
         struct circ_buf *xmit = &msm_port->uart.state->xmit;
         struct msm_dma *dma = &msm_port->tx_dma;
         unsigned int pio_count, dma_count, dma_min;
+        char buf[4] = { 0 };
         void __iomem *tf;
         int err = 0;
 
@@ -869,10 +870,12 @@ static void msm_handle_tx(struct uart_port *port)
                 else
                         tf = port->membase + UART_TF;
 
+                buf[0] = port->x_char;
+
                 if (msm_port->is_uartdm)
                         msm_reset_dm_count(port, 1);
 
-                iowrite8_rep(tf, &port->x_char, 1);
+                iowrite32_rep(tf, buf, 1);
                 port->icount.tx++;
                 port->x_char = 0;
                 return;
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 3cd139752d3f..abc705716aa0 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -1557,6 +1557,13 @@ static void sci_request_dma(struct uart_port *port)
 
         dev_dbg(port->dev, "%s: port %d\n", __func__, port->line);
 
+        /*
+         * DMA on console may interfere with Kernel log messages which use
+         * plain putchar(). So, simply don't use it with a console.
+         */
+        if (uart_console(port))
+                return;
+
         if (!port->dev->of_node)
                 return;
 
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index fdd12f8c3deb..5c0ca1c24b6f 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -1056,6 +1056,13 @@ static void visual_init(struct vc_data *vc, int num, int init)
         vc->vc_screenbuf_size = vc->vc_rows * vc->vc_size_row;
 }
 
+
+static void visual_deinit(struct vc_data *vc)
+{
+        vc->vc_sw->con_deinit(vc);
+        module_put(vc->vc_sw->owner);
+}
+
 int vc_allocate(unsigned int currcons)  /* return 0 on success */
 {
         struct vt_notifier_param param;
@@ -1103,6 +1110,7 @@ int vc_allocate(unsigned int currcons)	/* return 0 on success */
 
         return 0;
 err_free:
+        visual_deinit(vc);
         kfree(vc);
         vc_cons[currcons].d = NULL;
         return -ENOMEM;
@@ -1331,9 +1339,8 @@ struct vc_data *vc_deallocate(unsigned int currcons)
                 param.vc = vc = vc_cons[currcons].d;
                 atomic_notifier_call_chain(&vt_notifier_list, VT_DEALLOCATE, &param);
                 vcs_remove_sysfs(currcons);
-                vc->vc_sw->con_deinit(vc);
+                visual_deinit(vc);
                 put_pid(vc->vt_pid);
-                module_put(vc->vc_sw->owner);
                 vc_uniscr_set(vc, NULL);
                 kfree(vc->vc_screenbuf);
                 vc_cons[currcons].d = NULL;
diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c
index 786f9aab55df..a9c69ae30878 100644
--- a/drivers/video/fbdev/core/fbcon.c
+++ b/drivers/video/fbdev/core/fbcon.c
@@ -1248,7 +1248,7 @@ finished:
         if (free_font)
                 vc->vc_font.data = NULL;
 
-        if (vc->vc_hi_font_mask)
+        if (vc->vc_hi_font_mask && vc->vc_screenbuf)
                 set_vc_hi_font(vc, false);
 
         if (!con_is_bound(&fb_con))