diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c
index c79dcd7c8d1a6032aed8ffc9bdaf7bd1623fd17a..b4c1798a1df2a079b4a398b7f8d38d45d3264578 100644
--- a/drivers/tty/serial/sc16is7xx.c
+++ b/drivers/tty/serial/sc16is7xx.c
@@ -327,6 +327,7 @@ struct sc16is7xx_one {
struct kthread_work reg_work;
struct kthread_delayed_work ms_work;
struct sc16is7xx_one_config config;
+ unsigned char buf[SC16IS7XX_FIFO_SIZE]; /* Rx buffer. */
unsigned int old_mctrl;
u8 old_lcr; /* Value before EFR access. */
bool irda_mode;
@@ -340,7 +341,6 @@ struct sc16is7xx_port {
unsigned long gpio_valid_mask;
#endif
u8 mctrl_mask;
- unsigned char buf[SC16IS7XX_FIFO_SIZE];
struct kthread_worker kworker;
struct task_struct *kworker_task;
struct sc16is7xx_one p[];
@@ -592,6 +592,8 @@ static int sc16is7xx_set_baud(struct uart_port *port, int baud)
SC16IS7XX_MCR_CLKSEL_BIT,
prescaler == 1 ? 0 : SC16IS7XX_MCR_CLKSEL_BIT);
+ mutex_lock(&one->efr_lock);
+
/* Backup LCR and access special register set (DLL/DLH) */
lcr = sc16is7xx_port_read(port, SC16IS7XX_LCR_REG);
sc16is7xx_port_write(port, SC16IS7XX_LCR_REG,
@@ -606,24 +608,26 @@ static int sc16is7xx_set_baud(struct uart_port *port, int baud)
/* Restore LCR and access to general register set */
sc16is7xx_port_write(port, SC16IS7XX_LCR_REG, lcr);
+ mutex_unlock(&one->efr_lock);
+
return DIV_ROUND_CLOSEST((clk / prescaler) / 16, div);
}
static void sc16is7xx_handle_rx(struct uart_port *port, unsigned int rxlen,
unsigned int iir)
{
- struct sc16is7xx_port *s = dev_get_drvdata(port->dev);
+ struct sc16is7xx_one *one = to_sc16is7xx_one(port, port);
unsigned int lsr = 0, bytes_read, i;
bool read_lsr = (iir == SC16IS7XX_IIR_RLSE_SRC) ? true : false;
u8 ch, flag;
- if (unlikely(rxlen >= sizeof(s->buf))) {
+ if (unlikely(rxlen >= sizeof(one->buf))) {
dev_warn_ratelimited(port->dev,
"ttySC%i: Possible RX FIFO overrun: %d\n",
port->line, rxlen);
port->icount.buf_overrun++;
/* Ensure sanity of RX level */
- rxlen = sizeof(s->buf);
+ rxlen = sizeof(one->buf);
}
while (rxlen) {
@@ -636,10 +640,10 @@ static void sc16is7xx_handle_rx(struct uart_port *port, unsigned int rxlen,
lsr = 0;
if (read_lsr) {
- s->buf[0] = sc16is7xx_port_read(port, SC16IS7XX_RHR_REG);
+ one->buf[0] = sc16is7xx_port_read(port, SC16IS7XX_RHR_REG);
bytes_read = 1;
} else {
- sc16is7xx_fifo_read(port, s->buf, rxlen);
+ sc16is7xx_fifo_read(port, one->buf, rxlen);
bytes_read = rxlen;
}
@@ -672,7 +676,7 @@ static void sc16is7xx_handle_rx(struct uart_port *port, unsigned int rxlen,
}
for (i = 0; i < bytes_read; ++i) {
- ch = s->buf[i];
+ ch = one->buf[i];
if (uart_handle_sysrq_char(port, ch))
continue;
@@ -690,10 +694,10 @@ static void sc16is7xx_handle_rx(struct uart_port *port, unsigned int rxlen,
static void sc16is7xx_handle_tx(struct uart_port *port)
{
- struct sc16is7xx_port *s = dev_get_drvdata(port->dev);
struct tty_port *tport = &port->state->port;
unsigned long flags;
unsigned int txlen;
+ unsigned char *tail;
if (unlikely(port->x_char)) {
sc16is7xx_port_write(port, SC16IS7XX_THR_REG, port->x_char);
@@ -718,8 +722,9 @@ static void sc16is7xx_handle_tx(struct uart_port *port)
txlen = 0;
}
- txlen = uart_fifo_out(port, s->buf, txlen);
- sc16is7xx_fifo_write(port, s->buf, txlen);
+ txlen = kfifo_out_linear_ptr(&tport->xmit_fifo, &tail, txlen);
+ sc16is7xx_fifo_write(port, tail, txlen);
+ uart_xmit_advance(port, txlen);
uart_port_lock_irqsave(port, &flags);
if (kfifo_len(&tport->xmit_fifo) < WAKEUP_CHARS)
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 9a18d0b95a41909d2dfdc758ae464b611aecf4d7..5bea3af46abcef688d72f1bcb19074a53003f0ec 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -881,6 +881,14 @@ static int uart_set_info(struct tty_struct *tty, struct tty_port *port,
new_flags = (__force upf_t)new_info->flags;
old_custom_divisor = uport->custom_divisor;
+ if (!(uport->flags & UPF_FIXED_PORT)) {
+ unsigned int uartclk = new_info->baud_base * 16;
+ /* check needs to be done here before other settings made */
+ if (uartclk == 0) {
+ retval = -EINVAL;
+ goto exit;
+ }
+ }
if (!capable(CAP_SYS_ADMIN)) {
retval = -EPERM;
if (change_irq || change_port ||
diff --git a/drivers/tty/vt/conmakehash.c b/drivers/tty/vt/conmakehash.c
index dc2177fec7156e5f10e65581f34be64077af620e..82d9db68b2ce81fefcbaf3f3c16e18b63eb4f410 100644
--- a/drivers/tty/vt/conmakehash.c
+++ b/drivers/tty/vt/conmakehash.c
@@ -11,6 +11,8 @@
* Copyright (C) 1995-1997 H. Peter Anvin
*/
+#include <libgen.h>
+#include <linux/limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <sysexits.h>
@@ -76,8 +78,8 @@ static void addpair(int fp, int un)
int main(int argc, char *argv[])
{
FILE *ctbl;
- const char *tblname, *rel_tblname;
- const char *abs_srctree;
+ const char *tblname;
+ char base_tblname[PATH_MAX];
char buffer[65536];
int fontlen;
int i, nuni, nent;
@@ -102,16 +104,6 @@ int main(int argc, char *argv[])
}
}
- abs_srctree = getenv("abs_srctree");
- if (abs_srctree && !strncmp(abs_srctree, tblname, strlen(abs_srctree)))
- {
- rel_tblname = tblname + strlen(abs_srctree);
- while (*rel_tblname == '/')
- ++rel_tblname;
- }
- else
- rel_tblname = tblname;
-
/* For now we assume the default font is always 256 characters. */
fontlen = 256;
@@ -253,6 +245,8 @@ int main(int argc, char *argv[])
for ( i = 0 ; i < fontlen ; i++ )
nuni += unicount[i];
+ strncpy(base_tblname, tblname, PATH_MAX);
+ base_tblname[PATH_MAX - 1] = 0;
printf("\
/*\n\
* Do not edit this file; it was automatically generated by\n\
@@ -264,7 +258,7 @@ int main(int argc, char *argv[])
#include <linux/types.h>\n\
\n\
u8 dfont_unicount[%d] = \n\
-{\n\t", rel_tblname, fontlen);
+{\n\t", basename(base_tblname), fontlen);
for ( i = 0 ; i < fontlen ; i++ )
{