diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/earlycon.c | 5 | ||||
| -rw-r--r-- | drivers/tty/tty_baudrate.c | 13 | ||||
| -rw-r--r-- | drivers/tty/vt/vt_ioctl.c | 4 |
3 files changed, 18 insertions, 4 deletions
diff --git a/drivers/tty/serial/earlycon.c b/drivers/tty/serial/earlycon.c index ac667b47f199..7b0a3a1688e8 100644 --- a/drivers/tty/serial/earlycon.c +++ b/drivers/tty/serial/earlycon.c @@ -254,7 +254,6 @@ int __init of_setup_earlycon(const struct earlycon_id *match, return -ENXIO; } port->mapbase = addr; - port->uartclk = BASE_BAUD * 16; val = of_get_flat_dt_prop(node, "reg-offset", NULL); if (val) @@ -289,6 +288,10 @@ int __init of_setup_earlycon(const struct earlycon_id *match, if (val) early_console_dev.baud = be32_to_cpu(*val); + val = of_get_flat_dt_prop(node, "clock-frequency", NULL); + if (val) + port->uartclk = be32_to_cpu(*val); + if (options) { early_console_dev.baud = simple_strtoul(options, NULL, 0); strlcpy(early_console_dev.options, options, diff --git a/drivers/tty/tty_baudrate.c b/drivers/tty/tty_baudrate.c index 5c33fd25676d..ebc797fc1afd 100644 --- a/drivers/tty/tty_baudrate.c +++ b/drivers/tty/tty_baudrate.c @@ -156,18 +156,25 @@ void tty_termios_encode_baud_rate(struct ktermios *termios, termios->c_ospeed = obaud; #ifdef BOTHER + if ((termios->c_cflag >> IBSHIFT) & CBAUD) + ibinput = 1; /* An input speed was specified */ + /* If the user asked for a precise weird speed give a precise weird answer. If they asked for a Bfoo speed they may have problems digesting non-exact replies so fuzz a bit */ - if ((termios->c_cflag & CBAUD) == BOTHER) + if ((termios->c_cflag & CBAUD) == BOTHER) { oclose = 0; + if (!ibinput) + iclose = 0; + } if (((termios->c_cflag >> IBSHIFT) & CBAUD) == BOTHER) iclose = 0; - if ((termios->c_cflag >> IBSHIFT) & CBAUD) - ibinput = 1; /* An input speed was specified */ #endif termios->c_cflag &= ~CBAUD; +#ifdef IBSHIFT + termios->c_cflag &= ~(CBAUD << IBSHIFT); +#endif /* * Our goal is to find a close match to the standard baud rate diff --git a/drivers/tty/vt/vt_ioctl.c b/drivers/tty/vt/vt_ioctl.c index 2d2b420598b2..7b34b0ddbf0e 100644 --- a/drivers/tty/vt/vt_ioctl.c +++ b/drivers/tty/vt/vt_ioctl.c @@ -32,6 +32,8 @@ #include <asm/io.h> #include <linux/uaccess.h> +#include <linux/nospec.h> + #include <linux/kbd_kern.h> #include <linux/vt_kern.h> #include <linux/kbd_diacr.h> @@ -700,6 +702,8 @@ int vt_ioctl(struct tty_struct *tty, if (vsa.console == 0 || vsa.console > MAX_NR_CONSOLES) ret = -ENXIO; else { + vsa.console = array_index_nospec(vsa.console, + MAX_NR_CONSOLES + 1); vsa.console--; console_lock(); ret = vc_allocate(vsa.console); |