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Message-ID: <2ede4944-b26a-dce4-74f0-80a55e0b2af4@osg.samsung.com>
Date: Mon, 21 Nov 2016 21:39:53 +0100
From: Stefan Schmidt <stefan@....samsung.com>
To: Bhumika Goyal <bhumirks@...il.com>, julia.lawall@...6.fr,
michael.hennerich@...log.com, aar@...gutronix.de,
linux-wpan@...r.kernel.org, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: ieee802154: constify ieee802154_ops structures
Hello.
On 21/11/16 21:30, Bhumika Goyal wrote:
> Declare the structure ieee802154_ops as const as it is only passed as an
> argument to the function ieee802154_alloc_hw. This argument is of type
> const struct ieee802154_ops *, so ieee80254_ops structures having this
> property can be declared as const.
> Done using Coccinelle:
>
> @r1 disable optional_qualifier @
> identifier i;
> position p;
> @@
> static struct ieee802154_ops i@p = {...};
>
> @ok1@
> identifier r1.i;
> position p;
> expression e1;
> @@
> ieee802154_alloc_hw(e1,&i@p)
>
> @bad@
> position p!={r1.p,ok1.p};
> identifier r1.i;
> @@
> i@p
>
> @depends on !bad disable optional_qualifier@
> identifier r1.i;
> @@
> static
> +const
> struct ieee802154_ops i={...};
>
> @depends on !bad disable optional_qualifier@
> identifier r1.i;
> @@
> +const
> struct ieee802154_ops i;
>
> The before and after size details of the affected files are:
>
> text data bss dec hex filename
> 8669 1176 16 9861 2685 drivers/net/ieee802154/adf7242.o
> 8805 1048 16 9869 268d drivers/net/ieee802154/adf7242.o
>
> text data bss dec hex filename
> 7211 2296 32 9539 2543 drivers/net/ieee802154/atusb.o
> 7339 2160 32 9531 253b drivers/net/ieee802154/atusb.o
>
> Signed-off-by: Bhumika Goyal <bhumirks@...il.com>
> ---
> drivers/net/ieee802154/adf7242.c | 2 +-
> drivers/net/ieee802154/atusb.c | 2 +-
> 2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/ieee802154/adf7242.c b/drivers/net/ieee802154/adf7242.c
> index 9fa7ac9..4ff4c7d 100644
> --- a/drivers/net/ieee802154/adf7242.c
> +++ b/drivers/net/ieee802154/adf7242.c
> @@ -874,7 +874,7 @@ static int adf7242_rx(struct adf7242_local *lp)
> return 0;
> }
>
> -static struct ieee802154_ops adf7242_ops = {
> +static const struct ieee802154_ops adf7242_ops = {
> .owner = THIS_MODULE,
> .xmit_sync = adf7242_xmit,
> .ed = adf7242_ed,
> diff --git a/drivers/net/ieee802154/atusb.c b/drivers/net/ieee802154/atusb.c
> index 1056ed1..322864a 100644
> --- a/drivers/net/ieee802154/atusb.c
> +++ b/drivers/net/ieee802154/atusb.c
> @@ -567,7 +567,7 @@ static void atusb_stop(struct ieee802154_hw *hw)
> return 0;
> }
>
> -static struct ieee802154_ops atusb_ops = {
> +static const struct ieee802154_ops atusb_ops = {
> .owner = THIS_MODULE,
> .xmit_async = atusb_xmit,
> .ed = atusb_ed,
>
Acked-by: Stefan Schmidt <stefan@....samsung.com>
regards
Stefan Schmidt
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