i2c: davinci: constify i2c_algorithm structure

Check for i2c_algorithm structures that are only stored in the algo field of an i2c_adapter structure. This field is declared const, so i2c_algorithm structures that have this property can be declared as const also.

This issue was identified using Coccinelle and the following semantic patch:

@r disable optional_qualifier@
identifier i;
position p;
@@
static struct i2c_algorithm i at p = { ... };

@ok@
identifier r.i;
struct i2c_adapter e;
position p;
@@
e.algo = &i at p;

@bad@
position p != {r.p,ok.p};
identifier r.i;
@@
i at p

@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
struct i2c_algorithm i = { ... };

---
 drivers/i2c/busses/i2c-davinci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

index 9e7ef5c..b259fc8 100644
@@ -733,7 +733,7 @@ static inline void i2c_davinci_cpufreq_deregister(struct davinci_i2c_dev *dev)
 }
 #endif
 
-static struct i2c_algorithm i2c_davinci_algo = {
+static const struct i2c_algorithm i2c_davinci_algo = {
 	.master_xfer	= i2c_davinci_xfer,
 	.functionality	= i2c_davinci_func,
 };

2.5.0