[PATCH] console: console_get_by_name: do not strcmp NULL

[Sascha Hauer]

On Sun, Mar 26, 2017 at 04:17:12PM +0200, Alexander Kurz wrote:
> console_get_by_name iterates through the console_list using strcmp to mach
> a given console by name. console_list may contain entries with devname = NULL,
> inserted there e.g. by KEYBOARD_GPIO. In worst case loady -t usbserial
> will crash barebox when strcmp hits 0 NULL devname:
> > unable to handle NULL pointer dereference at address 0x00000000
> 
> Let console_get_by_name just ignore the anonymous consoles.
> 
> Signed-off-by: Alexander Kurz <akurz at blala.de>
> ---

Applied to master, thanks

Sascha

>  common/console_common.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/common/console_common.c b/common/console_common.c
> index 2e5869f..d051458 100644
> --- a/common/console_common.c
> +++ b/common/console_common.c
> @@ -246,7 +246,7 @@ struct console_device *console_get_by_name(const char *name)
>  	struct console_device *cdev;
>  
>  	for_each_console(cdev) {
> -		if (!strcmp(cdev->devname, name))
> +		if (cdev->devname && !strcmp(cdev->devname, name))
>  			return cdev;
>  	}
>  
> -- 
> 2.1.4
> 
> 
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