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Date: Tue, 9 Mar 2010 00:29:08 -0600 From: Jason Wessel <jason.wessel@...driver.com> To: gregkh@...e.de Cc: linux-usb@...r.kernel.org, Alan Stern <stern@...land.harvard.edu>, linux-kernel@...r.kernel.org, Jason Wessel <jason.wessel@...driver.com>, Alan Cox <alan@...ux.intel.com> Subject: [PATCH 3/6] usb-console: pass baud from console to the initial tty open The usb console code has had a long standing problem of not being able to pass the baud rate from the kernel argument console=ttyUSB0,BAUD down to the initial tty open, unless you were willing to settle for 9600 baud. The solution is to directly use tty_init_termios() in usb_console_setup() as this will preserve any changes to the initial termios setting on future opens. CC: Greg Kroah-Hartman <gregkh@...e.de> CC: Alan Cox <alan@...ux.intel.com> CC: Alan Stern <stern@...land.harvard.edu> CC: linux-usb@...r.kernel.org Signed-off-by: Jason Wessel <jason.wessel@...driver.com> --- drivers/usb/serial/console.c | 22 ++++++++++------------ 1 files changed, 10 insertions(+), 12 deletions(-) diff --git a/drivers/usb/serial/console.c b/drivers/usb/serial/console.c index 4ea64fe..1ee6b2a 100644 --- a/drivers/usb/serial/console.c +++ b/drivers/usb/serial/console.c @@ -66,7 +66,7 @@ static int usb_console_setup(struct console *co, char *options) struct usb_serial_port *port; int retval; struct tty_struct *tty = NULL; - struct ktermios *termios = NULL, dummy; + struct ktermios dummy; dbg("%s", __func__); @@ -141,15 +141,14 @@ static int usb_console_setup(struct console *co, char *options) goto reset_open_count; } kref_init(&tty->kref); - termios = kzalloc(sizeof(*termios), GFP_KERNEL); - if (!termios) { + tty_port_tty_set(&port->port, tty); + tty->driver = usb_serial_tty_driver; + tty->index = co->index; + if (tty_init_termios(tty)) { retval = -ENOMEM; err("no more memory"); goto free_tty; } - memset(&dummy, 0, sizeof(struct ktermios)); - tty->termios = termios; - tty_port_tty_set(&port->port, tty); } /* only call the device specific open if this @@ -161,16 +160,16 @@ static int usb_console_setup(struct console *co, char *options) if (retval) { err("could not open USB console port"); - goto free_termios; + goto fail; } if (serial->type->set_termios) { - termios->c_cflag = cflag; - tty_termios_encode_baud_rate(termios, baud, baud); + tty->termios->c_cflag = cflag; + tty_termios_encode_baud_rate(tty->termios, baud, baud); + memset(&dummy, 0, sizeof(struct ktermios)); serial->type->set_termios(tty, port, &dummy); tty_port_tty_set(&port->port, NULL); - kfree(termios); kfree(tty); } set_bit(ASYNCB_INITIALIZED, &port->port.flags); @@ -185,8 +184,7 @@ static int usb_console_setup(struct console *co, char *options) mutex_unlock(&serial->disc_mutex); return retval; - free_termios: - kfree(termios); + fail: tty_port_tty_set(&port->port, NULL); free_tty: kfree(tty); -- 1.6.3.1.9.g95405b -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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