[PATCH 05/13] cpufreq/arch: powerpc: pasemi: Move prototypes to shared header

[PATCH 05/13] cpufreq/arch: powerpc: pasemi: Move prototypes to shared header

[Lee Jones]

If function callers and providers do not share the same prototypes the
compiler complains of missing prototypes.  Fix this by moving the
already existing prototypes out to a mutually convenient location.

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: Olof Johansson <olof@lixom.net>
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>
---
 arch/powerpc/platforms/pasemi/pasemi.h    | 15 ------------
 arch/powerpc/platforms/pasemi/powersave.S |  2 ++
 drivers/cpufreq/pasemi-cpufreq.c          |  1 +
 include/linux/platform_data/pasemi.h      | 28 +++++++++++++++++++++++
 4 files changed, 31 insertions(+), 15 deletions(-)
 create mode 100644 include/linux/platform_data/pasemi.h

diff --git a/arch/powerpc/platforms/pasemi/pasemi.h b/arch/powerpc/platforms/pasemi/pasemi.h
index 70b56048ed1be..528d81ef748ad 100644
--- a/arch/powerpc/platforms/pasemi/pasemi.h
+++ b/arch/powerpc/platforms/pasemi/pasemi.h
@@ -15,21 +15,6 @@ extern void __init pasemi_map_registers(void);
 extern void idle_spin(void);
 extern void idle_doze(void);
 
-/* Restore astate to last set */
-#ifdef CONFIG_PPC_PASEMI_CPUFREQ
-extern int check_astate(void);
-extern void restore_astate(int cpu);
-#else
-static inline int check_astate(void)
-{
-	/* Always return >0 so we never power save */
-	return 1;
-}
-static inline void restore_astate(int cpu)
-{
-}
-#endif
-
 extern struct pci_controller_ops pasemi_pci_controller_ops;
 
 #endif /* _PASEMI_PASEMI_H */
diff --git a/arch/powerpc/platforms/pasemi/powersave.S b/arch/powerpc/platforms/pasemi/powersave.S
index d0215d5329ca7..7747b48963286 100644
--- a/arch/powerpc/platforms/pasemi/powersave.S
+++ b/arch/powerpc/platforms/pasemi/powersave.S
@@ -5,6 +5,8 @@
  * Maintained by: Olof Johansson <olof@lixom.net>
  */
 
+#include <linux/platform_data/pasemi.h>
+
 #include <asm/processor.h>
 #include <asm/page.h>
 #include <asm/ppc_asm.h>
diff --git a/drivers/cpufreq/pasemi-cpufreq.c b/drivers/cpufreq/pasemi-cpufreq.c
index c66f566a854cb..c6bb3ecc90ef3 100644
--- a/drivers/cpufreq/pasemi-cpufreq.c
+++ b/drivers/cpufreq/pasemi-cpufreq.c
@@ -15,6 +15,7 @@
 #include <linux/timer.h>
 #include <linux/module.h>
 #include <linux/of_address.h>
+#include <linux/platform_data/pasemi.h>
 
 #include <asm/hw_irq.h>
 #include <asm/io.h>
diff --git a/include/linux/platform_data/pasemi.h b/include/linux/platform_data/pasemi.h
new file mode 100644
index 0000000000000..3fed0687fcc9a
--- /dev/null
+++ b/include/linux/platform_data/pasemi.h
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2020 Linaro Ltd.
+ *
+ * Author: Lee Jones <lee.jones@linaro.org>
+ */
+
+#ifndef _LINUX_PLATFORM_DATA_PASEMI_H
+#define _LINUX_PLATFORM_DATA_PASEMI_H
+
+/* Restore astate to last set */
+#ifdef CONFIG_PPC_PASEMI_CPUFREQ
+int check_astate(void);
+void restore_astate(int cpu);
+#else
+static inline int check_astate(void)
+{
+	/* Always return >0 so we never power save */
+	return 1;
+}
+static inline void restore_astate(int cpu)
+{
+}
+#endif
+
+#endif /* _LINUX_PLATFORM_DATA_PASEMI_H */
+
+
-- 
2.25.1

[PATCH 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>
---
 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 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>
---
 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 05/13] cpufreq/arch: powerpc: pasemi: Move prototypes to shared header

[Viresh Kumar]

On 14-07-20, 15:50, Lee Jones wrote:
> If function callers and providers do not share the same prototypes the
> compiler complains of missing prototypes.  Fix this by moving the
> already existing prototypes out to a mutually convenient location.
> 
> 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: Olof Johansson <olof@lixom.net>
> 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>
> ---
>  arch/powerpc/platforms/pasemi/pasemi.h    | 15 ------------

Is there no sane way we can include this file directly to the cpufreq
file ?

>  arch/powerpc/platforms/pasemi/powersave.S |  2 ++
>  drivers/cpufreq/pasemi-cpufreq.c          |  1 +
>  include/linux/platform_data/pasemi.h      | 28 +++++++++++++++++++++++
>  4 files changed, 31 insertions(+), 15 deletions(-)
>  create mode 100644 include/linux/platform_data/pasemi.h

-- 
viresh

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

[Viresh Kumar]

On 14-07-20, 15:50, 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>
> ---
>  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;

Acked-by: Viresh Kumar <viresh.kumar@linaro.org>

-- 
viresh

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

[Viresh Kumar]

On 14-07-20, 15:50, Lee Jones wrote:
> 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>
> ---
>  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

Acked-by: Viresh Kumar <viresh.kumar@linaro.org>

-- 
viresh

Re: [PATCH 05/13] cpufreq/arch: powerpc: pasemi: Move prototypes to shared header

[Olof Johansson]

On Tue, Jul 14, 2020 at 7:50 AM Lee Jones <lee.jones@linaro.org> wrote:
>
> If function callers and providers do not share the same prototypes the
> compiler complains of missing prototypes.  Fix this by moving the
> already existing prototypes out to a mutually convenient location.
>
> 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: Olof Johansson <olof@lixom.net>
> 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>
> ---
>  arch/powerpc/platforms/pasemi/pasemi.h    | 15 ------------
>  arch/powerpc/platforms/pasemi/powersave.S |  2 ++
>  drivers/cpufreq/pasemi-cpufreq.c          |  1 +
>  include/linux/platform_data/pasemi.h      | 28 +++++++++++++++++++++++
>  4 files changed, 31 insertions(+), 15 deletions(-)
>  create mode 100644 include/linux/platform_data/pasemi.h
>
> diff --git a/arch/powerpc/platforms/pasemi/pasemi.h b/arch/powerpc/platforms/pasemi/pasemi.h
> index 70b56048ed1be..528d81ef748ad 100644
> --- a/arch/powerpc/platforms/pasemi/pasemi.h
> +++ b/arch/powerpc/platforms/pasemi/pasemi.h
> @@ -15,21 +15,6 @@ extern void __init pasemi_map_registers(void);
>  extern void idle_spin(void);
>  extern void idle_doze(void);
>
> -/* Restore astate to last set */
> -#ifdef CONFIG_PPC_PASEMI_CPUFREQ
> -extern int check_astate(void);
> -extern void restore_astate(int cpu);
> -#else
> -static inline int check_astate(void)
> -{
> -       /* Always return >0 so we never power save */
> -       return 1;
> -}
> -static inline void restore_astate(int cpu)
> -{
> -}
> -#endif
> -
>  extern struct pci_controller_ops pasemi_pci_controller_ops;
>
>  #endif /* _PASEMI_PASEMI_H */
> diff --git a/arch/powerpc/platforms/pasemi/powersave.S b/arch/powerpc/platforms/pasemi/powersave.S
> index d0215d5329ca7..7747b48963286 100644
> --- a/arch/powerpc/platforms/pasemi/powersave.S
> +++ b/arch/powerpc/platforms/pasemi/powersave.S
> @@ -5,6 +5,8 @@
>   * Maintained by: Olof Johansson <olof@lixom.net>
>   */
>
> +#include <linux/platform_data/pasemi.h>
> +
>  #include <asm/processor.h>
>  #include <asm/page.h>
>  #include <asm/ppc_asm.h>
> diff --git a/drivers/cpufreq/pasemi-cpufreq.c b/drivers/cpufreq/pasemi-cpufreq.c
> index c66f566a854cb..c6bb3ecc90ef3 100644
> --- a/drivers/cpufreq/pasemi-cpufreq.c
> +++ b/drivers/cpufreq/pasemi-cpufreq.c
> @@ -15,6 +15,7 @@
>  #include <linux/timer.h>
>  #include <linux/module.h>
>  #include <linux/of_address.h>
> +#include <linux/platform_data/pasemi.h>
>
>  #include <asm/hw_irq.h>
>  #include <asm/io.h>
> diff --git a/include/linux/platform_data/pasemi.h b/include/linux/platform_data/pasemi.h
> new file mode 100644
> index 0000000000000..3fed0687fcc9a
> --- /dev/null
> +++ b/include/linux/platform_data/pasemi.h
> @@ -0,0 +1,28 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
> +/*
> + * Copyright (C) 2020 Linaro Ltd.
> + *
> + * Author: Lee Jones <lee.jones@linaro.org>
> + */

Absolutely not. It's neither your copyright, nor your authorship.


-Olof

Re: [PATCH 05/13] cpufreq/arch: powerpc: pasemi: Move prototypes to shared header

[Olof Johansson]

On Tue, Jul 14, 2020 at 8:07 PM Viresh Kumar <viresh.kumar@linaro.org> wrote:
>
> On 14-07-20, 15:50, Lee Jones wrote:
> > If function callers and providers do not share the same prototypes the
> > compiler complains of missing prototypes.  Fix this by moving the
> > already existing prototypes out to a mutually convenient location.
> >
> > 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: Olof Johansson <olof@lixom.net>
> > 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>
> > ---
> >  arch/powerpc/platforms/pasemi/pasemi.h    | 15 ------------
>
> Is there no sane way we can include this file directly to the cpufreq
> file ?

Yep. arch/powerpc seems to be in the search path for modules on powerpc, so:

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


-Olof

Re: [PATCH 05/13] cpufreq/arch: powerpc: pasemi: Move prototypes to shared header

[Viresh Kumar]

On 14-07-20, 20:49, Olof Johansson wrote:
> On Tue, Jul 14, 2020 at 8:07 PM Viresh Kumar <viresh.kumar@linaro.org> wrote:
> >
> > On 14-07-20, 15:50, Lee Jones wrote:
> > > If function callers and providers do not share the same prototypes the
> > > compiler complains of missing prototypes.  Fix this by moving the
> > > already existing prototypes out to a mutually convenient location.
> > >
> > > 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: Olof Johansson <olof@lixom.net>
> > > 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>
> > > ---
> > >  arch/powerpc/platforms/pasemi/pasemi.h    | 15 ------------
> >
> > Is there no sane way we can include this file directly to the cpufreq
> > file ?
> 
> Yep. arch/powerpc seems to be in the search path for modules on powerpc, so:
> 
> 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

Fantastic. Thanks.

-- 
viresh

Re: [PATCH 05/13] cpufreq/arch: powerpc: pasemi: Move prototypes to shared header

[Lee Jones]

On Tue, 14 Jul 2020, Olof Johansson wrote:

> On Tue, Jul 14, 2020 at 7:50 AM Lee Jones <lee.jones@linaro.org> wrote:
> >
> > If function callers and providers do not share the same prototypes the
> > compiler complains of missing prototypes.  Fix this by moving the
> > already existing prototypes out to a mutually convenient location.
> >
> > 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: Olof Johansson <olof@lixom.net>
> > 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>
> > ---
> >  arch/powerpc/platforms/pasemi/pasemi.h    | 15 ------------
> >  arch/powerpc/platforms/pasemi/powersave.S |  2 ++
> >  drivers/cpufreq/pasemi-cpufreq.c          |  1 +
> >  include/linux/platform_data/pasemi.h      | 28 +++++++++++++++++++++++
> >  4 files changed, 31 insertions(+), 15 deletions(-)
> >  create mode 100644 include/linux/platform_data/pasemi.h
> >
> > diff --git a/arch/powerpc/platforms/pasemi/pasemi.h b/arch/powerpc/platforms/pasemi/pasemi.h
> > index 70b56048ed1be..528d81ef748ad 100644
> > --- a/arch/powerpc/platforms/pasemi/pasemi.h
> > +++ b/arch/powerpc/platforms/pasemi/pasemi.h
> > @@ -15,21 +15,6 @@ extern void __init pasemi_map_registers(void);
> >  extern void idle_spin(void);
> >  extern void idle_doze(void);
> >
> > -/* Restore astate to last set */
> > -#ifdef CONFIG_PPC_PASEMI_CPUFREQ
> > -extern int check_astate(void);
> > -extern void restore_astate(int cpu);
> > -#else
> > -static inline int check_astate(void)
> > -{
> > -       /* Always return >0 so we never power save */
> > -       return 1;
> > -}
> > -static inline void restore_astate(int cpu)
> > -{
> > -}
> > -#endif
> > -
> >  extern struct pci_controller_ops pasemi_pci_controller_ops;
> >
> >  #endif /* _PASEMI_PASEMI_H */
> > diff --git a/arch/powerpc/platforms/pasemi/powersave.S b/arch/powerpc/platforms/pasemi/powersave.S
> > index d0215d5329ca7..7747b48963286 100644
> > --- a/arch/powerpc/platforms/pasemi/powersave.S
> > +++ b/arch/powerpc/platforms/pasemi/powersave.S
> > @@ -5,6 +5,8 @@
> >   * Maintained by: Olof Johansson <olof@lixom.net>
> >   */
> >
> > +#include <linux/platform_data/pasemi.h>
> > +
> >  #include <asm/processor.h>
> >  #include <asm/page.h>
> >  #include <asm/ppc_asm.h>
> > diff --git a/drivers/cpufreq/pasemi-cpufreq.c b/drivers/cpufreq/pasemi-cpufreq.c
> > index c66f566a854cb..c6bb3ecc90ef3 100644
> > --- a/drivers/cpufreq/pasemi-cpufreq.c
> > +++ b/drivers/cpufreq/pasemi-cpufreq.c
> > @@ -15,6 +15,7 @@
> >  #include <linux/timer.h>
> >  #include <linux/module.h>
> >  #include <linux/of_address.h>
> > +#include <linux/platform_data/pasemi.h>
> >
> >  #include <asm/hw_irq.h>
> >  #include <asm/io.h>
> > diff --git a/include/linux/platform_data/pasemi.h b/include/linux/platform_data/pasemi.h
> > new file mode 100644
> > index 0000000000000..3fed0687fcc9a
> > --- /dev/null
> > +++ b/include/linux/platform_data/pasemi.h
> > @@ -0,0 +1,28 @@
> > +/* SPDX-License-Identifier: GPL-2.0-only */
> > +/*
> > + * Copyright (C) 2020 Linaro Ltd.
> > + *
> > + * Author: Lee Jones <lee.jones@linaro.org>
> > + */
> 
> Absolutely not. It's neither your copyright, nor your authorship.

The file was new.  Anyway, the point is now moot.

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
Follow Linaro: Facebook | Twitter | Blog

Re: [PATCH 05/13] cpufreq/arch: powerpc: pasemi: Move prototypes to shared header

[Lee Jones]

On Tue, 14 Jul 2020, Olof Johansson wrote:

> On Tue, Jul 14, 2020 at 8:07 PM Viresh Kumar <viresh.kumar@linaro.org> wrote:
> >
> > On 14-07-20, 15:50, Lee Jones wrote:
> > > If function callers and providers do not share the same prototypes the
> > > compiler complains of missing prototypes.  Fix this by moving the
> > > already existing prototypes out to a mutually convenient location.
> > >
> > > 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: Olof Johansson <olof@lixom.net>
> > > 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>
> > > ---
> > >  arch/powerpc/platforms/pasemi/pasemi.h    | 15 ------------
> >
> > Is there no sane way we can include this file directly to the cpufreq
> > file ?
> 
> Yep. arch/powerpc seems to be in the search path for modules on powerpc, so:
> 
> 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

I searched for "include.*platforms/" in drivers/, and was scared off
this method since no one else does this.

But if it's a reasonable solution, great.  Will fix.

Thanks Olof.

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
Follow Linaro: Facebook | Twitter | Blog

Re: [PATCH 05/13] cpufreq/arch: powerpc: pasemi: Move prototypes to shared header

[Viresh Kumar]

On 15-07-20, 07:36, Lee Jones wrote:
> I searched for "include.*platforms/" in drivers/, and was scared off
> this method since no one else does this.

Yeah its not right for generic drivers, but this is very much platform
specific so it is fine here.

-- 
viresh

Re: [PATCH 05/13] cpufreq/arch: powerpc: pasemi: Move prototypes to shared header

[Olof Johansson]

On Tue, Jul 14, 2020 at 11:33 PM Lee Jones <lee.jones@linaro.org> wrote:
>
> On Tue, 14 Jul 2020, Olof Johansson wrote:
>
> > On Tue, Jul 14, 2020 at 7:50 AM Lee Jones <lee.jones@linaro.org> wrote:
> > >
> > > If function callers and providers do not share the same prototypes the
> > > compiler complains of missing prototypes.  Fix this by moving the
> > > already existing prototypes out to a mutually convenient location.
> > >
> > > 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: Olof Johansson <olof@lixom.net>
> > > 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>
> > > ---
> > >  arch/powerpc/platforms/pasemi/pasemi.h    | 15 ------------
> > >  arch/powerpc/platforms/pasemi/powersave.S |  2 ++
> > >  drivers/cpufreq/pasemi-cpufreq.c          |  1 +
> > >  include/linux/platform_data/pasemi.h      | 28 +++++++++++++++++++++++
> > >  4 files changed, 31 insertions(+), 15 deletions(-)
> > >  create mode 100644 include/linux/platform_data/pasemi.h
> > >
> > > diff --git a/arch/powerpc/platforms/pasemi/pasemi.h b/arch/powerpc/platforms/pasemi/pasemi.h
> > > index 70b56048ed1be..528d81ef748ad 100644
> > > --- a/arch/powerpc/platforms/pasemi/pasemi.h
> > > +++ b/arch/powerpc/platforms/pasemi/pasemi.h
> > > @@ -15,21 +15,6 @@ extern void __init pasemi_map_registers(void);
> > >  extern void idle_spin(void);
> > >  extern void idle_doze(void);
> > >
> > > -/* Restore astate to last set */
> > > -#ifdef CONFIG_PPC_PASEMI_CPUFREQ
> > > -extern int check_astate(void);
> > > -extern void restore_astate(int cpu);
> > > -#else
> > > -static inline int check_astate(void)
> > > -{
> > > -       /* Always return >0 so we never power save */
> > > -       return 1;
> > > -}
> > > -static inline void restore_astate(int cpu)
> > > -{
> > > -}
> > > -#endif
> > > -
> > >  extern struct pci_controller_ops pasemi_pci_controller_ops;
> > >
> > >  #endif /* _PASEMI_PASEMI_H */
> > > diff --git a/arch/powerpc/platforms/pasemi/powersave.S b/arch/powerpc/platforms/pasemi/powersave.S
> > > index d0215d5329ca7..7747b48963286 100644
> > > --- a/arch/powerpc/platforms/pasemi/powersave.S
> > > +++ b/arch/powerpc/platforms/pasemi/powersave.S
> > > @@ -5,6 +5,8 @@
> > >   * Maintained by: Olof Johansson <olof@lixom.net>
> > >   */
> > >
> > > +#include <linux/platform_data/pasemi.h>
> > > +
> > >  #include <asm/processor.h>
> > >  #include <asm/page.h>
> > >  #include <asm/ppc_asm.h>
> > > diff --git a/drivers/cpufreq/pasemi-cpufreq.c b/drivers/cpufreq/pasemi-cpufreq.c
> > > index c66f566a854cb..c6bb3ecc90ef3 100644
> > > --- a/drivers/cpufreq/pasemi-cpufreq.c
> > > +++ b/drivers/cpufreq/pasemi-cpufreq.c
> > > @@ -15,6 +15,7 @@
> > >  #include <linux/timer.h>
> > >  #include <linux/module.h>
> > >  #include <linux/of_address.h>
> > > +#include <linux/platform_data/pasemi.h>
> > >
> > >  #include <asm/hw_irq.h>
> > >  #include <asm/io.h>
> > > diff --git a/include/linux/platform_data/pasemi.h b/include/linux/platform_data/pasemi.h
> > > new file mode 100644
> > > index 0000000000000..3fed0687fcc9a
> > > --- /dev/null
> > > +++ b/include/linux/platform_data/pasemi.h
> > > @@ -0,0 +1,28 @@
> > > +/* SPDX-License-Identifier: GPL-2.0-only */
> > > +/*
> > > + * Copyright (C) 2020 Linaro Ltd.
> > > + *
> > > + * Author: Lee Jones <lee.jones@linaro.org>
> > > + */
> >
> > Absolutely not. It's neither your copyright, nor your authorship.
>
> The file was new.  Anyway, the point is now moot.

The contents was copied and pasted from other material, not originally
produced by you.

I suggest you consult with Linaro lawyers on how to handle this if you
have to do something like it in the future.


-Olof

Re: [PATCH 05/13] cpufreq/arch: powerpc: pasemi: Move prototypes to shared header

[Lee Jones]

On Tue, 14 Jul 2020, Olof Johansson wrote:

> On Tue, Jul 14, 2020 at 11:33 PM Lee Jones <lee.jones@linaro.org> wrote:
> >
> > On Tue, 14 Jul 2020, Olof Johansson wrote:
> >
> > > On Tue, Jul 14, 2020 at 7:50 AM Lee Jones <lee.jones@linaro.org> wrote:
> > > >
> > > > If function callers and providers do not share the same prototypes the
> > > > compiler complains of missing prototypes.  Fix this by moving the
> > > > already existing prototypes out to a mutually convenient location.
> > > >
> > > > 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: Olof Johansson <olof@lixom.net>
> > > > 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>
> > > > ---
> > > >  arch/powerpc/platforms/pasemi/pasemi.h    | 15 ------------
> > > >  arch/powerpc/platforms/pasemi/powersave.S |  2 ++
> > > >  drivers/cpufreq/pasemi-cpufreq.c          |  1 +
> > > >  include/linux/platform_data/pasemi.h      | 28 +++++++++++++++++++++++
> > > >  4 files changed, 31 insertions(+), 15 deletions(-)
> > > >  create mode 100644 include/linux/platform_data/pasemi.h
> > > >
> > > > diff --git a/arch/powerpc/platforms/pasemi/pasemi.h b/arch/powerpc/platforms/pasemi/pasemi.h
> > > > index 70b56048ed1be..528d81ef748ad 100644
> > > > --- a/arch/powerpc/platforms/pasemi/pasemi.h
> > > > +++ b/arch/powerpc/platforms/pasemi/pasemi.h
> > > > @@ -15,21 +15,6 @@ extern void __init pasemi_map_registers(void);
> > > >  extern void idle_spin(void);
> > > >  extern void idle_doze(void);
> > > >
> > > > -/* Restore astate to last set */
> > > > -#ifdef CONFIG_PPC_PASEMI_CPUFREQ
> > > > -extern int check_astate(void);
> > > > -extern void restore_astate(int cpu);
> > > > -#else
> > > > -static inline int check_astate(void)
> > > > -{
> > > > -       /* Always return >0 so we never power save */
> > > > -       return 1;
> > > > -}
> > > > -static inline void restore_astate(int cpu)
> > > > -{
> > > > -}
> > > > -#endif
> > > > -
> > > >  extern struct pci_controller_ops pasemi_pci_controller_ops;
> > > >
> > > >  #endif /* _PASEMI_PASEMI_H */
> > > > diff --git a/arch/powerpc/platforms/pasemi/powersave.S b/arch/powerpc/platforms/pasemi/powersave.S
> > > > index d0215d5329ca7..7747b48963286 100644
> > > > --- a/arch/powerpc/platforms/pasemi/powersave.S
> > > > +++ b/arch/powerpc/platforms/pasemi/powersave.S
> > > > @@ -5,6 +5,8 @@
> > > >   * Maintained by: Olof Johansson <olof@lixom.net>
> > > >   */
> > > >
> > > > +#include <linux/platform_data/pasemi.h>
> > > > +
> > > >  #include <asm/processor.h>
> > > >  #include <asm/page.h>
> > > >  #include <asm/ppc_asm.h>
> > > > diff --git a/drivers/cpufreq/pasemi-cpufreq.c b/drivers/cpufreq/pasemi-cpufreq.c
> > > > index c66f566a854cb..c6bb3ecc90ef3 100644
> > > > --- a/drivers/cpufreq/pasemi-cpufreq.c
> > > > +++ b/drivers/cpufreq/pasemi-cpufreq.c
> > > > @@ -15,6 +15,7 @@
> > > >  #include <linux/timer.h>
> > > >  #include <linux/module.h>
> > > >  #include <linux/of_address.h>
> > > > +#include <linux/platform_data/pasemi.h>
> > > >
> > > >  #include <asm/hw_irq.h>
> > > >  #include <asm/io.h>
> > > > diff --git a/include/linux/platform_data/pasemi.h b/include/linux/platform_data/pasemi.h
> > > > new file mode 100644
> > > > index 0000000000000..3fed0687fcc9a
> > > > --- /dev/null
> > > > +++ b/include/linux/platform_data/pasemi.h
> > > > @@ -0,0 +1,28 @@
> > > > +/* SPDX-License-Identifier: GPL-2.0-only */
> > > > +/*
> > > > + * Copyright (C) 2020 Linaro Ltd.
> > > > + *
> > > > + * Author: Lee Jones <lee.jones@linaro.org>
> > > > + */
> > >
> > > Absolutely not. It's neither your copyright, nor your authorship.
> >
> > The file was new.  Anyway, the point is now moot.
> 
> The contents was copied and pasted from other material, not originally
> produced by you.
> 
> I suggest you consult with Linaro lawyers on how to handle this if you
> have to do something like it in the future.

Very well.  Thanks for the heads-up.

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
Follow Linaro: Facebook | Twitter | Blog