Re: [PATCH] serial: fix parisc boot hang

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

On Fri, Jan 02, 2015 at 10:05:13AM -0800, James Bottomley wrote:
> From: James Bottomley <JBottomley@Parallels.com>
> 
> This is a partial revert of 2f2dafe (serial: serial_core.c: printk
> replacement) which gets us booting again.  The real problem seems to be
> the _emit path in early boot.  However, until we can root cause it, we
> need at least to get boot working.
> 
> Fixes: 2f2dafe77df2c78e189a9fa6b1879dffd06ae5a1
> Cc: stable@vger.kernel.org
> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
> 
> ---
> 
> diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
> index 57ca61b..984605b 100644
> --- a/drivers/tty/serial/serial_core.c
> +++ b/drivers/tty/serial/serial_core.c
> @@ -2164,7 +2164,9 @@ uart_report_port(struct uart_driver *drv, struct uart_port *port)
>  		break;
>  	}
>  
> -	dev_info(port->dev, "%s%d at %s (irq = %d, base_baud = %d) is a %s\n",
> +	printk(KERN_INFO "%s%s%s%d at %s (irq = %d, base_baud = %d) is a %s\n",
> +	       port->dev ? dev_name(port->dev) : "",
> +	       port->dev ? ": " : "",
>  	       drv->dev_name,
>  	       drv->tty_driver->name_base + port->line,
>  	       address, port->irq, port->uartclk / 16, uart_type(port));

Very odd, but I'll go queue it up, thanks.

greg k-h