Re: [Qemu-devel] [PATCHv3 6/9] pseries: Clean up error handling in spapr_rtas_register()

[Thomas Huth <thuth@redhat.com>]

On 18.01.2016 05:24, David Gibson wrote:
> The errors detected in this function necessarily indicate bugs in the rest
> of the qemu code, rather than an external or configuration problem.
> 
> So, a simple assert() is more appropriate than any more complex error
> reporting.
> 
> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
> ---
>  hw/ppc/spapr_rtas.c | 12 +++---------
>  1 file changed, 3 insertions(+), 9 deletions(-)
> 
> diff --git a/hw/ppc/spapr_rtas.c b/hw/ppc/spapr_rtas.c
> index 34b12a3..0be52ae 100644
> --- a/hw/ppc/spapr_rtas.c
> +++ b/hw/ppc/spapr_rtas.c
> @@ -648,17 +648,11 @@ target_ulong spapr_rtas_call(PowerPCCPU *cpu, sPAPRMachineState *spapr,
>  
>  void spapr_rtas_register(int token, const char *name, spapr_rtas_fn fn)
>  {
> -    if (!((token >= RTAS_TOKEN_BASE) && (token < RTAS_TOKEN_MAX))) {
> -        fprintf(stderr, "RTAS invalid token 0x%x\n", token);
> -        exit(1);
> -    }
> +    assert((token >= RTAS_TOKEN_BASE) && (token < RTAS_TOKEN_MAX));

While you're at it, you could also get rid of some superfluous
parentheses in that statement:

	assert(token >= RTAS_TOKEN_BASE && token < RTAS_TOKEN_MAX);

>      token -= RTAS_TOKEN_BASE;
> -    if (rtas_table[token].name) {
> -        fprintf(stderr, "RTAS call \"%s\" is registered already as 0x%x\n",
> -                rtas_table[token].name, token);
> -        exit(1);
> -    }
> +
> +    assert(!rtas_table[token].name);
>  
>      rtas_table[token].name = name;
>      rtas_table[token].fn = fn;
> 

Anyway, patch sounds reasonable,
Reviewed-by: Thomas Huth <thuth@redhat.com>