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media: davinci: make function arguments const

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Make the function arguments of functions vpfe_{register/unregister}_ccdc_device
const as the pointer dev does not modify the fields of the structure
it points to. Also, declare the variable ccdc_dev const as it points to the
same structure as dev but it does not modify the fields as well.

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Bhumika Goyal 2017-10-17 08:27:24 -04:00 committed by Mauro Carvalho Chehab
parent 1e7126b4a8
commit 1e6be01446
2 changed files with 5 additions and 5 deletions
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4
drivers/media/platform/davinci/ccdc_hw_device.h
View File

@ -82,8 +82,8 @@ struct ccdc_hw_device {
};
/* Used by CCDC module to register & unregister with vpfe capture driver */
int vpfe_register_ccdc_device(struct ccdc_hw_device *dev);
void vpfe_unregister_ccdc_device(struct ccdc_hw_device *dev);
int vpfe_register_ccdc_device(const struct ccdc_hw_device *dev);
void vpfe_unregister_ccdc_device(const struct ccdc_hw_device *dev);
#endif
#endif

6
drivers/media/platform/davinci/vpfe_capture.c
View File

@ -115,7 +115,7 @@ static struct vpfe_config_params config_params = {
};
/* ccdc device registered */
static struct ccdc_hw_device *ccdc_dev;
static const struct ccdc_hw_device *ccdc_dev;
/* lock for accessing ccdc information */
static DEFINE_MUTEX(ccdc_lock);
/* ccdc configuration */
@ -203,7 +203,7 @@ static const struct vpfe_pixel_format *vpfe_lookup_pix_format(u32 pix_format)
* vpfe_register_ccdc_device. CCDC module calls this to
* register with vpfe capture
*/
int vpfe_register_ccdc_device(struct ccdc_hw_device *dev)
int vpfe_register_ccdc_device(const struct ccdc_hw_device *dev)
{
int ret = 0;
printk(KERN_NOTICE "vpfe_register_ccdc_device: %s\n", dev->name);
@ -259,7 +259,7 @@ EXPORT_SYMBOL(vpfe_register_ccdc_device);
* vpfe_unregister_ccdc_device. CCDC module calls this to
* unregister with vpfe capture
*/
void vpfe_unregister_ccdc_device(struct ccdc_hw_device *dev)
void vpfe_unregister_ccdc_device(const struct ccdc_hw_device *dev)
{
if (!dev) {
printk(KERN_ERR "invalid ccdc device ptr\n");