clockevents: drivers: migrate to ->set_dev_mode()

Clockevents core now supports ->set_dev_mode() (as a replacement to
->set_mode()), with capability to return error codes.

Migrate all drivers in 'drivers/clocksource' to implement this new callback.

Drivers now return -ENOSYS when a unsupported mode is passed to their
->set_dev_mode() callbacks and return 0 on success.

Most of the changes are automated with help of Coccinelle
(http://coccinelle.lip6.fr/) and the ones left are around the switch block which
are handled manually.

Some drivers had a WARN()/BUG()/pr_err()/empty-implementation for unsupported
modes. These statements and unsupported modes are removed now as proper error
handling with a WARN_ON() is done at clockevents core.

A simplified version of the semantic patch is:

@@
identifier m,c,setmode;
@@
-void
+int
setmode(enum clock_event_mode m, struct clock_event_device *c);

@@
identifier setmode;
@@
-void
+int
setmode(enum clock_event_mode, struct clock_event_device *);

@fixret@
identifier m,c,setmode;
@@
-void
+int
setmode(enum clock_event_mode m, struct clock_event_device *c)
 {
 ...
+ return 0;
 }

@depends on fixret@
identifier ced;
identifier fixret.setmode;
@@
... struct clock_event_device ced = {
...,
-.set_mode
+.set_dev_mode
= setmode,
};

@depends on fixret@
expression ced;
identifier fixret.setmode;
@@
- ced->set_mode
+ ced->set_dev_mode
= setmode

@depends on fixret@
identifier fixret.setmode;
@@
{
.
-set_mode
+set_dev_mode
= setmode
}

@depends on fixret@
expression ced;
identifier fixret.setmode;
@@
- ced.set_mode
+ ced.set_dev_mode
= setmode

Reviewed-by: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
[
Backported from viresh branch tick/oneshot-stopped
applied below list of files manually
	drivers/clocksource/cadence_ttc_timer.c
	drivers/clocksource/sh_cmt.c
	drivers/clocksource/sh_mtu2.c
	drivers/clocksource/sh_tmu.c
	drivers/clocksource/time-orion.c
	drivers/clocksource/timer-marco.c
]
Signed-off-by: Santosh Shukla <santosh.shukla@linaro.org>

0 files changed, 0 insertions, 0 deletions