Commit a529f8de authored by Bhumika Goyal's avatar Bhumika Goyal Committed by Tony Lindgren
Browse files

ARM: OMAP2+: CM: make some pointers and function arguments as const 



Make the pointer cm_ll_data of type cm_ll_data as const as it does not
modify the fields of the structure it points too.
After this change, make the argument of cm_register function as const as
it is used to initialise cm_ll_data or used inside an if condition.
Make the pointer argument of cm_unregister function as const as it is only
used inside an if condition.
Add const to the function prototypes too.

Signed-off-by: default avatarBhumika Goyal <bhumirks@gmail.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent 4fbd8d19

arch/arm/mach-omap2/cm.h

+2 −2
Original line number Diff line number Diff line
@@ -72,8 +72,8 @@ int omap_cm_wait_module_idle(u8 part, s16 prcm_mod, u16 idlest_reg, 
			     u8 idlest_shift);

int omap_cm_module_enable(u8 mode, u8 part, u16 inst, u16 clkctrl_offs);

int omap_cm_module_disable(u8 part, u16 inst, u16 clkctrl_offs);

extern int cm_register(struct cm_ll_data *cld);

extern int cm_unregister(struct cm_ll_data *cld);

extern int cm_register(const struct cm_ll_data *cld);

extern int cm_unregister(const struct cm_ll_data *cld);

int omap_cm_init(void);

int omap2_cm_base_init(void);

arch/arm/mach-omap2/cm_common.c

+3 −3
Original line number Diff line number Diff line
@@ -29,7 +29,7 @@ 
 * common CM functions

 */

static struct cm_ll_data null_cm_ll_data;

static struct cm_ll_data *cm_ll_data = &null_cm_ll_data;

static const struct cm_ll_data *cm_ll_data = &null_cm_ll_data;



/* cm_base: base virtual address of the CM IP block */

struct omap_domain_base cm_base;
@@ -186,7 +186,7 @@ int omap_cm_module_disable(u8 part, u16 inst, u16 clkctrl_offs) 
 * is NULL, or -EEXIST if cm_register() has already been called

 * without an intervening cm_unregister().

 */

int cm_register(struct cm_ll_data *cld)

int cm_register(const struct cm_ll_data *cld)

{

	if (!cld)

		return -EINVAL;
@@ -210,7 +210,7 @@ int cm_register(struct cm_ll_data *cld) 
 * -EINVAL if @cld is NULL or if @cld does not match the struct

 * cm_ll_data * previously registered by cm_register().

 */

int cm_unregister(struct cm_ll_data *cld)

int cm_unregister(const struct cm_ll_data *cld)

{

	if (!cld || cm_ll_data != cld)

		return -EINVAL;

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