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[PATCH 4/4] thermal: bcm2835: constify thermal_zone_of_device_ops structures

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  [PATCH 4/4] thermal: bcm2835: constify thermal_zone_of_device_ops structures Julia Lawall <Julia.Lawall@lip6.fr> - 2017-08-05 23:10 +0200
    Re: [PATCH 4/4] thermal: bcm2835: constify thermal_zone_of_device_ops  structures Stefan Wahren <stefan.wahren@i2se.com> - 2017-08-07 08:50 +0200

#1704709 — [PATCH 4/4] thermal: bcm2835: constify thermal_zone_of_device_ops structures

The thermal_zone_of_device_ops structure is only passed as the fourth
argument to thermal_zone_of_sensor_register, which is declared as const.
Thus the thermal_zone_of_device_ops structure itself can be const.

Done with the help of Coccinelle.

// <smpl>
@r disable optional_qualifier@
identifier i;
position p;
@@
static struct thermal_zone_of_device_ops i@p = { ... };

@ok1@
identifier r.i;
expression e1,e2,e3;
position p;
@@
thermal_zone_of_sensor_register(e1,e2,e3,&i@p)

@bad@
position p != {r.p,ok1.p};
identifier r.i;
struct thermal_zone_of_device_ops e;
@@
e@i@p

@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
 struct thermal_zone_of_device_ops i = { ... };
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>

---
 drivers/thermal/broadcom/bcm2835_thermal.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/thermal/broadcom/bcm2835_thermal.c b/drivers/thermal/broadcom/bcm2835_thermal.c
index e6863c8..a4d6a0e 100644
--- a/drivers/thermal/broadcom/bcm2835_thermal.c
+++ b/drivers/thermal/broadcom/bcm2835_thermal.c
@@ -145,7 +145,7 @@ static void bcm2835_thermal_debugfs(struct platform_device *pdev)
 	debugfs_create_regset32("regset", 0444, data->debugfsdir, regset);
 }
 
-static struct thermal_zone_of_device_ops bcm2835_thermal_ops = {
+static const struct thermal_zone_of_device_ops bcm2835_thermal_ops = {
 	.get_temp = bcm2835_thermal_get_temp,
 };
 

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#1705128 — Re: [PATCH 4/4] thermal: bcm2835: constify thermal_zone_of_device_ops structures

Am 05.08.2017 um 22:37 schrieb Julia Lawall:
> The thermal_zone_of_device_ops structure is only passed as the fourth
> argument to thermal_zone_of_sensor_register, which is declared as const.
> Thus the thermal_zone_of_device_ops structure itself can be const.
>
> Done with the help of Coccinelle.
>
> // <smpl>
> @r disable optional_qualifier@
> identifier i;
> position p;
> @@
> static struct thermal_zone_of_device_ops i@p = { ... };
>
> @ok1@
> identifier r.i;
> expression e1,e2,e3;
> position p;
> @@
> thermal_zone_of_sensor_register(e1,e2,e3,&i@p)
>
> @bad@
> position p != {r.p,ok1.p};
> identifier r.i;
> struct thermal_zone_of_device_ops e;
> @@
> e@i@p
>
> @depends on !bad disable optional_qualifier@
> identifier r.i;
> @@
> static
> +const
>  struct thermal_zone_of_device_ops i = { ... };
> // </smpl>
>
> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>

Acked-by: Stefan Wahren <stefan.wahren@i2se.com>

>
> ---
>  drivers/thermal/broadcom/bcm2835_thermal.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/thermal/broadcom/bcm2835_thermal.c b/drivers/thermal/broadcom/bcm2835_thermal.c
> index e6863c8..a4d6a0e 100644
> --- a/drivers/thermal/broadcom/bcm2835_thermal.c
> +++ b/drivers/thermal/broadcom/bcm2835_thermal.c
> @@ -145,7 +145,7 @@ static void bcm2835_thermal_debugfs(struct platform_device *pdev)
>  	debugfs_create_regset32("regset", 0444, data->debugfsdir, regset);
>  }
>  
> -static struct thermal_zone_of_device_ops bcm2835_thermal_ops = {
> +static const struct thermal_zone_of_device_ops bcm2835_thermal_ops = {
>  	.get_temp = bcm2835_thermal_get_temp,
>  };
>  
>

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