[PATCH v2 05/13] cpufreq: pasemi: Include header file for {check, restore}_astate prototypes

[PATCH v2 05/13] cpufreq: pasemi: Include header file for {check, restore}_astate prototypes

[Lee Jones]

If function callers and providers do not share the same prototypes the
compiler complains of missing prototypes.  Fix this by including the
correct platforms header file.

Fixes the following W=1 kernel build warning(s):

 drivers/cpufreq/pasemi-cpufreq.c:109:5: warning: no previous prototype for ‘check_astate’ [-Wmissing-prototypes]
 109 | int check_astate(void)
 | ^~~~~~~~~~~~
 drivers/cpufreq/pasemi-cpufreq.c:114:6: warning: no previous prototype for ‘restore_astate’ [-Wmissing-prototypes]
 114 | void restore_astate(int cpu)
 | ^~~~~~~~~~~~~~

Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: linuxppc-dev@lists.ozlabs.org
Suggested-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
---
 drivers/cpufreq/pasemi-cpufreq.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/cpufreq/pasemi-cpufreq.c b/drivers/cpufreq/pasemi-cpufreq.c
index c66f566a854cb..815645170c4de 100644
--- a/drivers/cpufreq/pasemi-cpufreq.c
+++ b/drivers/cpufreq/pasemi-cpufreq.c
@@ -22,6 +22,8 @@
 #include <asm/time.h>
 #include <asm/smp.h>
 
+#include <platforms/pasemi/pasemi.h>
+
 #define SDCASR_REG		0x0100
 #define SDCASR_REG_STRIDE	0x1000
 #define SDCPWR_CFGA0_REG	0x0100
-- 
2.25.1

[PATCH v2 06/13] cpufreq: powernv-cpufreq: Functions only used in call-backs should be static

[Lee Jones]

Fixes the following W=1 kernel build warning(s):

 drivers/cpufreq/powernv-cpufreq.c:669:6: warning: no previous prototype for ‘gpstate_timer_handler’ [-Wmissing-prototypes]
 drivers/cpufreq/powernv-cpufreq.c:902:6: warning: no previous prototype for ‘powernv_cpufreq_work_fn’ [-Wmissing-prototypes]

Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
---
 drivers/cpufreq/powernv-cpufreq.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/cpufreq/powernv-cpufreq.c b/drivers/cpufreq/powernv-cpufreq.c
index 8646eb197cd96..068cc53abe320 100644
--- a/drivers/cpufreq/powernv-cpufreq.c
+++ b/drivers/cpufreq/powernv-cpufreq.c
@@ -666,7 +666,7 @@ static inline void  queue_gpstate_timer(struct global_pstate_info *gpstates)
  * according quadratic equation. Queues a new timer if it is still not equal
  * to local pstate
  */
-void gpstate_timer_handler(struct timer_list *t)
+static void gpstate_timer_handler(struct timer_list *t)
 {
 	struct global_pstate_info *gpstates = from_timer(gpstates, t, timer);
 	struct cpufreq_policy *policy = gpstates->policy;
@@ -899,7 +899,7 @@ static struct notifier_block powernv_cpufreq_reboot_nb = {
 	.notifier_call = powernv_cpufreq_reboot_notifier,
 };
 
-void powernv_cpufreq_work_fn(struct work_struct *work)
+static void powernv_cpufreq_work_fn(struct work_struct *work)
 {
 	struct chip *chip = container_of(work, struct chip, throttle);
 	struct cpufreq_policy *policy;
-- 
2.25.1

[PATCH v2 07/13] cpufreq: powernv-cpufreq: Fix a bunch of kerneldoc related issues

[Lee Jones]

Repair problems with formatting and missing attributes/parameters, and
demote header comments which do not meet the required standards
applicable to kerneldoc.

Fixes the following W=1 kernel build warning(s):

 drivers/cpufreq/powernv-cpufreq.c:84: warning: Function parameter or member 'last_lpstate_idx' not described in 'global_pstate_info'
 drivers/cpufreq/powernv-cpufreq.c:84: warning: Function parameter or member 'last_gpstate_idx' not described in 'global_pstate_info'
 drivers/cpufreq/powernv-cpufreq.c:84: warning: Function parameter or member 'policy' not described in 'global_pstate_info'
 drivers/cpufreq/powernv-cpufreq.c:182: warning: Function parameter or member 'i' not described in 'idx_to_pstate'
 drivers/cpufreq/powernv-cpufreq.c:201: warning: Function parameter or member 'pstate' not described in 'pstate_to_idx'
 drivers/cpufreq/powernv-cpufreq.c:670: warning: Function parameter or member 't' not described in 'gpstate_timer_handler'
 drivers/cpufreq/powernv-cpufreq.c:670: warning: Excess function parameter 'data' description in 'gpstate_timer_handler'

Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
---
 drivers/cpufreq/powernv-cpufreq.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/cpufreq/powernv-cpufreq.c b/drivers/cpufreq/powernv-cpufreq.c
index 068cc53abe320..2e5a8b8a4abaa 100644
--- a/drivers/cpufreq/powernv-cpufreq.c
+++ b/drivers/cpufreq/powernv-cpufreq.c
@@ -64,13 +64,14 @@
  *				highest_lpstate_idx
  * @last_sampled_time:		Time from boot in ms when global pstates were
  *				last set
- * @last_lpstate_idx,		Last set value of local pstate and global
- * last_gpstate_idx		pstate in terms of cpufreq table index
+ * @last_lpstate_idx:		Last set value of local pstate and global
+ * @last_gpstate_idx:		pstate in terms of cpufreq table index
  * @timer:			Is used for ramping down if cpu goes idle for
  *				a long time with global pstate held high
  * @gpstate_lock:		A spinlock to maintain synchronization between
  *				routines called by the timer handler and
  *				governer's target_index calls
+ * @policy:			Associated CPUFreq policy
  */
 struct global_pstate_info {
 	int highest_lpstate_idx;
@@ -170,7 +171,7 @@ static inline u8 extract_pstate(u64 pmsr_val, unsigned int shift)
 
 /* Use following functions for conversions between pstate_id and index */
 
-/**
+/*
  * idx_to_pstate : Returns the pstate id corresponding to the
  *		   frequency in the cpufreq frequency table
  *		   powernv_freqs indexed by @i.
@@ -188,7 +189,7 @@ static inline u8 idx_to_pstate(unsigned int i)
 	return powernv_freqs[i].driver_data;
 }
 
-/**
+/*
  * pstate_to_idx : Returns the index in the cpufreq frequencytable
  *		   powernv_freqs for the frequency whose corresponding
  *		   pstate id is @pstate.
@@ -660,7 +661,7 @@ static inline void  queue_gpstate_timer(struct global_pstate_info *gpstates)
 /**
  * gpstate_timer_handler
  *
- * @data: pointer to cpufreq_policy on which timer was queued
+ * @t: Timer context used to fetch global pstate info struct
  *
  * This handler brings down the global pstate closer to the local pstate
  * according quadratic equation. Queues a new timer if it is still not equal
-- 
2.25.1

Re: [PATCH v2 06/13] cpufreq: powernv-cpufreq: Functions only used in call-backs should be static

[Viresh Kumar]

On 15-07-20, 09:26, Lee Jones wrote:
> Fixes the following W=1 kernel build warning(s):
> 
>  drivers/cpufreq/powernv-cpufreq.c:669:6: warning: no previous prototype for ‘gpstate_timer_handler’ [-Wmissing-prototypes]
>  drivers/cpufreq/powernv-cpufreq.c:902:6: warning: no previous prototype for ‘powernv_cpufreq_work_fn’ [-Wmissing-prototypes]
> 
> Cc: Michael Ellerman <mpe@ellerman.id.au>
> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Cc: Paul Mackerras <paulus@samba.org>
> Cc: linuxppc-dev@lists.ozlabs.org
> Signed-off-by: Lee Jones <lee.jones@linaro.org>
> Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
> ---
>  drivers/cpufreq/powernv-cpufreq.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/cpufreq/powernv-cpufreq.c b/drivers/cpufreq/powernv-cpufreq.c
> index 8646eb197cd96..068cc53abe320 100644
> --- a/drivers/cpufreq/powernv-cpufreq.c
> +++ b/drivers/cpufreq/powernv-cpufreq.c
> @@ -666,7 +666,7 @@ static inline void  queue_gpstate_timer(struct global_pstate_info *gpstates)
>   * according quadratic equation. Queues a new timer if it is still not equal
>   * to local pstate
>   */
> -void gpstate_timer_handler(struct timer_list *t)
> +static void gpstate_timer_handler(struct timer_list *t)
>  {
>  	struct global_pstate_info *gpstates = from_timer(gpstates, t, timer);
>  	struct cpufreq_policy *policy = gpstates->policy;
> @@ -899,7 +899,7 @@ static struct notifier_block powernv_cpufreq_reboot_nb = {
>  	.notifier_call = powernv_cpufreq_reboot_notifier,
>  };
>  
> -void powernv_cpufreq_work_fn(struct work_struct *work)
> +static void powernv_cpufreq_work_fn(struct work_struct *work)
>  {
>  	struct chip *chip = container_of(work, struct chip, throttle);
>  	struct cpufreq_policy *policy;

Don't you want to drop this patch now ? As you already reviewed the
other one on the list ?

-- 
viresh

Re: [PATCH v2 06/13] cpufreq: powernv-cpufreq: Functions only used in call-backs should be static

[Lee Jones]

On Wed, 15 Jul 2020, Viresh Kumar wrote:

> On 15-07-20, 09:26, Lee Jones wrote:
> > Fixes the following W=1 kernel build warning(s):
> > 
> >  drivers/cpufreq/powernv-cpufreq.c:669:6: warning: no previous prototype for ‘gpstate_timer_handler’ [-Wmissing-prototypes]
> >  drivers/cpufreq/powernv-cpufreq.c:902:6: warning: no previous prototype for ‘powernv_cpufreq_work_fn’ [-Wmissing-prototypes]
> > 
> > Cc: Michael Ellerman <mpe@ellerman.id.au>
> > Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> > Cc: Paul Mackerras <paulus@samba.org>
> > Cc: linuxppc-dev@lists.ozlabs.org
> > Signed-off-by: Lee Jones <lee.jones@linaro.org>
> > Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
> > ---
> >  drivers/cpufreq/powernv-cpufreq.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> > 
> > diff --git a/drivers/cpufreq/powernv-cpufreq.c b/drivers/cpufreq/powernv-cpufreq.c
> > index 8646eb197cd96..068cc53abe320 100644
> > --- a/drivers/cpufreq/powernv-cpufreq.c
> > +++ b/drivers/cpufreq/powernv-cpufreq.c
> > @@ -666,7 +666,7 @@ static inline void  queue_gpstate_timer(struct global_pstate_info *gpstates)
> >   * according quadratic equation. Queues a new timer if it is still not equal
> >   * to local pstate
> >   */
> > -void gpstate_timer_handler(struct timer_list *t)
> > +static void gpstate_timer_handler(struct timer_list *t)
> >  {
> >  	struct global_pstate_info *gpstates = from_timer(gpstates, t, timer);
> >  	struct cpufreq_policy *policy = gpstates->policy;
> > @@ -899,7 +899,7 @@ static struct notifier_block powernv_cpufreq_reboot_nb = {
> >  	.notifier_call = powernv_cpufreq_reboot_notifier,
> >  };
> >  
> > -void powernv_cpufreq_work_fn(struct work_struct *work)
> > +static void powernv_cpufreq_work_fn(struct work_struct *work)
> >  {
> >  	struct chip *chip = container_of(work, struct chip, throttle);
> >  	struct cpufreq_policy *policy;
> 
> Don't you want to drop this patch now ? As you already reviewed the
> other one on the list ?

Yes, please drop/ignore.

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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