[PATCH 2/5] sandbox: do not register device before base is started

[Sascha Hauer]

On Wed, Sep 19, 2012 at 04:47:55PM +0200, Jean-Christophe PLAGNIOL-VILLARD wrote:
> This will crash when use registered bus with device registered to it.
> 
> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
> ---
>  arch/sandbox/board/Makefile   |    1 +
>  arch/sandbox/board/console.c  |    2 +-
>  arch/sandbox/board/devices.c  |   35 +++++++++++++++++++++++++++++++++++
>  arch/sandbox/board/hostfile.c |   19 +++++++++++++++++--
>  4 files changed, 54 insertions(+), 3 deletions(-)
>  create mode 100644 arch/sandbox/board/devices.c
> 
> diff --git a/arch/sandbox/board/Makefile b/arch/sandbox/board/Makefile
> index 266c3a3..5104f5c 100644
> --- a/arch/sandbox/board/Makefile
> +++ b/arch/sandbox/board/Makefile
> @@ -2,5 +2,6 @@ obj-y += board.o
>  obj-y += clock.o
>  obj-y += hostfile.o
>  obj-y += console.o
> +obj-y += devices.o
>  
>  extra-y += barebox.lds
> diff --git a/arch/sandbox/board/console.c b/arch/sandbox/board/console.c
> index 18b63e1..b0afa54 100644
> --- a/arch/sandbox/board/console.c
> +++ b/arch/sandbox/board/console.c
> @@ -44,6 +44,6 @@ int barebox_register_console(char *name, int stdinfd, int stdoutfd)
>  	data->stdoutfd = stdoutfd;
>  	data->stdinfd  = stdinfd;
>  
> -	return register_device(dev);
> +	return sandbox_add_device(dev);
>  }
>  
> diff --git a/arch/sandbox/board/devices.c b/arch/sandbox/board/devices.c
> new file mode 100644
> index 0000000..d3fad78
> --- /dev/null
> +++ b/arch/sandbox/board/devices.c
> @@ -0,0 +1,35 @@
> +/*
> + * Copyright (c) 2012 Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
> + *
> + * Under GPLv2 only
> + */
> +
> +#include <common.h>
> +#include <driver.h>
> +#include <init.h>
> +
> +static LIST_HEAD(sandbox_device_list);
> +
> +int sandbox_add_device(struct device_d *dev)
> +{
> +	if (!dev)
> +		return -EINVAL;

Can we please agree that everyone registering NULL pointers deserves a
nice crash? I do not see a reason to check this. All these kinds of
checks do is cover bugs and make tracking them down harder.

Sascha



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