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[PATCH 3/4] thermal: exynos: constify thermal_zone_of_device_ops structures

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  [PATCH 3/4] thermal: exynos: constify thermal_zone_of_device_ops structures Julia Lawall <Julia.Lawall@lip6.fr> - 2017-08-05 23:10 +0200
    Re: [PATCH 3/4] thermal: exynos: constify  thermal_zone_of_device_ops structures Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> - 2017-08-07 17:30 +0200

#1704710 — [PATCH 3/4] thermal: exynos: 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/samsung/exynos_tmu.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
index 7b8ef09..ed805c7 100644
--- a/drivers/thermal/samsung/exynos_tmu.c
+++ b/drivers/thermal/samsung/exynos_tmu.c
@@ -1286,7 +1286,7 @@ static int exynos_map_dt_data(struct platform_device *pdev)
 	return 0;
 }
 
-static struct thermal_zone_of_device_ops exynos_sensor_ops = {
+static const struct thermal_zone_of_device_ops exynos_sensor_ops = {
 	.get_temp = exynos_get_temp,
 	.set_emul_temp = exynos_tmu_set_emulation,
 };

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#1705638 — Re: [PATCH 3/4] thermal: exynos: constify thermal_zone_of_device_ops structures

On Saturday, August 05, 2017 10:37:16 PM Julia Lawall wrote:
> 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: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>

Eduardo/Zhang, Please queue this patch for upstream, thanks!

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics

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