media: flexcop-i2c: Constify struct i2c_algorithm

'struct i2c_algorithm' is not modified in this driver.

Constifying this structure moves some data to a read-only section, so
increase overall security, especially when the structure holds some
function pointers.

On a x86_64, with allmodconfig, as an example:
Before:
======
   text	   data	    bss	    dec	    hex	filename
   6645	    216	     16	   6877	   1add	drivers/media/common/b2c2/flexcop-i2c.o

After:
=====
   text	   data	    bss	    dec	    hex	filename
   6721	    160	     16	   6897	   1af1	drivers/media/common/b2c2/flexcop-i2c.o

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>

diff --git a/drivers/media/common/b2c2/flexcop-i2c.c b/drivers/media/common/b2c2/flexcop-i2c.c
index 1f1eaa807811b569d3a65566c3860a6d7d5845c7..21edf870d927c254b2dc03bd14dc75ef3fd62db7 100644 (file)
--- a/drivers/media/common/b2c2/flexcop-i2c.c
+++ b/drivers/media/common/b2c2/flexcop-i2c.c
@@ -209,7 +209,7 @@ static u32 flexcop_i2c_func(struct i2c_adapter *adapter)
        return I2C_FUNC_I2C;
 }
 
-static struct i2c_algorithm flexcop_algo = {
+static const struct i2c_algorithm flexcop_algo = {
        .master_xfer    = flexcop_master_xfer,
        .functionality  = flexcop_i2c_func,
 };