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SubjectRe: [PATCH] char: ipmi: constify ipmi_smi_handlers structures
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On 01/15/2017 01:15 PM, Bhumika Goyal wrote:
> Declare ipmi_smi_handlers structures as const as they are only passed as
> an argument to the function ipmi_register_smi. This argument is of type
> const, so ipmi_smi_handlers structures having similar properties can be
> declared const too.
> Done using Coccinelle:

Thanks, queues for the next Linux patch mayhem.

-corey

> @r1 disable optional_qualifier@
> identifier i;
> position p;
> @@
> static struct ipmi_smi_handlers i@p={...};
>
> @ok1@
> identifier r1.i;
> position p;
> @@
> ipmi_register_smi(&i@p,...)
>
> @bad@
> position p!={r1.p,ok1.p};
> identifier r1.i;
> @@
> i@p
>
> @depends on !bad disable optional_qualifier@
> identifier r1.i;
> @@
> +const
> struct ipmi_smi_handlers i;
>
> Size details after cross compiling the .o file for powerpc architecture
>
> File size before:
> text data bss dec hex filename
> 2777 288 0 3065 bf9 drivers/char/ipmi/ipmi_powernv.o
>
> File size after:
> text data bss dec hex filename
> 2873 192 0 3065 bf9 drivers/char/ipmi/ipmi_powernv.o
>
> Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
> ---
> drivers/char/ipmi/ipmi_powernv.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/char/ipmi/ipmi_powernv.c b/drivers/char/ipmi/ipmi_powernv.c
> index 6e658aa..b338a4b 100644
> --- a/drivers/char/ipmi/ipmi_powernv.c
> +++ b/drivers/char/ipmi/ipmi_powernv.c
> @@ -196,7 +196,7 @@ static void ipmi_powernv_poll(void *send_info)
> ipmi_powernv_recv(smi);
> }
>
> -static struct ipmi_smi_handlers ipmi_powernv_smi_handlers = {
> +static const struct ipmi_smi_handlers ipmi_powernv_smi_handlers = {
> .owner = THIS_MODULE,
> .start_processing = ipmi_powernv_start_processing,
> .sender = ipmi_powernv_send,


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