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[PATCH 1/4] thermal: qoriq: constify thermal_zone_of_device_ops structures

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  [PATCH 1/4] thermal: qoriq: constify thermal_zone_of_device_ops structures Julia Lawall <Julia.Lawall@lip6.fr> - 2017-08-05 23:10 +0200

#1704708 — [PATCH 1/4] thermal: qoriq: 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/qoriq_thermal.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/thermal/qoriq_thermal.c b/drivers/thermal/qoriq_thermal.c
index 4362a69..c866cc1 100644
--- a/drivers/thermal/qoriq_thermal.c
+++ b/drivers/thermal/qoriq_thermal.c
@@ -188,7 +188,7 @@ static void qoriq_tmu_init_device(struct qoriq_tmu_data *data)
 	tmu_write(data, TMR_DISABLE, &data->regs->tmr);
 }
 
-static struct thermal_zone_of_device_ops tmu_tz_ops = {
+static const struct thermal_zone_of_device_ops tmu_tz_ops = {
 	.get_temp = tmu_get_temp,
 };
 

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