[PATCH V4 1/1] clk: bulk: add of_clk_bulk_get()

[PATCH V4 1/1] clk: bulk: add of_clk_bulk_get()

[Dong Aisheng]

'clock-names' property is optinal in DT, so of_clk_bulk_get() is introduced
here to handle this for DT users without 'clock-names' specified.

Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Russell King <linux@arm.linux.org.uk>
Reported-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>

---
Changes since v3:
 * fix build warning on the SH platform

Changes since v2:
 * of_clk_bulk_get should return -ENOENT;

Changes since v1:
 * using %pOF instead of full_name
---
 drivers/clk/clk-bulk.c | 31 +++++++++++++++++++++++++++++++
 include/linux/clk.h    |  8 ++++++++
 2 files changed, 39 insertions(+)

diff --git a/drivers/clk/clk-bulk.c b/drivers/clk/clk-bulk.c
index c834f5a..896aa3b 100644
--- a/drivers/clk/clk-bulk.c
+++ b/drivers/clk/clk-bulk.c
@@ -19,6 +19,37 @@
 #include <linux/clk.h>
 #include <linux/device.h>
 #include <linux/export.h>
+#include <linux/of.h>
+
+#if defined(CONFIG_OF) && defined(CONFIG_COMMON_CLK)
+int __must_check of_clk_bulk_get(struct device_node *np, int num_clks,
+				 struct clk_bulk_data *clks)
+{
+	int ret;
+	int i;
+
+	for (i = 0; i < num_clks; i++)
+		clks[i].clk = NULL;
+
+	for (i = 0; i < num_clks; i++) {
+		clks[i].clk = of_clk_get(np, i);
+		if (IS_ERR(clks[i].clk)) {
+			ret = PTR_ERR(clks[i].clk);
+			pr_err("%pOF: Failed to get clk index: %d ret: %d\n",
+			       np, i, ret);
+			clks[i].clk = NULL;
+			goto err;
+		}
+	}
+
+	return 0;
+
+err:
+	clk_bulk_put(i, clks);
+
+	return ret;
+}
+#endif
 
 void clk_bulk_put(int num_clks, struct clk_bulk_data *clks)
 {
diff --git a/include/linux/clk.h b/include/linux/clk.h
index 12c96d9..073cb3b 100644
--- a/include/linux/clk.h
+++ b/include/linux/clk.h
@@ -680,10 +680,18 @@ static inline void clk_bulk_disable_unprepare(int num_clks,
 }
 
 #if defined(CONFIG_OF) && defined(CONFIG_COMMON_CLK)
+int __must_check of_clk_bulk_get(struct device_node *np, int num_clks,
+				 struct clk_bulk_data *clks);
 struct clk *of_clk_get(struct device_node *np, int index);
 struct clk *of_clk_get_by_name(struct device_node *np, const char *name);
 struct clk *of_clk_get_from_provider(struct of_phandle_args *clkspec);
 #else
+static inline int of_clk_bulk_get(struct device_node *np, int num_clks,
+			   struct clk_bulk_data *clks)
+{
+	return -ENOENT;
+}
+
 static inline struct clk *of_clk_get(struct device_node *np, int index)
 {
 	return ERR_PTR(-ENOENT);
-- 
2.7.4

[PATCH V4 1/1] clk: bulk: add of_clk_bulk_get()

[Dong Aisheng]

'clock-names' property is optinal in DT, so of_clk_bulk_get() is introduced
here to handle this for DT users without 'clock-names' specified.

Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Russell King <linux@arm.linux.org.uk>
Reported-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>

---
Changes since v3:
 * fix build warning on the SH platform

Changes since v2:
 * of_clk_bulk_get should return -ENOENT;

Changes since v1:
 * using %pOF instead of full_name
---
 drivers/clk/clk-bulk.c | 31 +++++++++++++++++++++++++++++++
 include/linux/clk.h    |  8 ++++++++
 2 files changed, 39 insertions(+)

diff --git a/drivers/clk/clk-bulk.c b/drivers/clk/clk-bulk.c
index c834f5a..896aa3b 100644
--- a/drivers/clk/clk-bulk.c
+++ b/drivers/clk/clk-bulk.c
@@ -19,6 +19,37 @@
 #include <linux/clk.h>
 #include <linux/device.h>
 #include <linux/export.h>
+#include <linux/of.h>
+
+#if defined(CONFIG_OF) && defined(CONFIG_COMMON_CLK)
+int __must_check of_clk_bulk_get(struct device_node *np, int num_clks,
+				 struct clk_bulk_data *clks)
+{
+	int ret;
+	int i;
+
+	for (i = 0; i < num_clks; i++)
+		clks[i].clk = NULL;
+
+	for (i = 0; i < num_clks; i++) {
+		clks[i].clk = of_clk_get(np, i);
+		if (IS_ERR(clks[i].clk)) {
+			ret = PTR_ERR(clks[i].clk);
+			pr_err("%pOF: Failed to get clk index: %d ret: %d\n",
+			       np, i, ret);
+			clks[i].clk = NULL;
+			goto err;
+		}
+	}
+
+	return 0;
+
+err:
+	clk_bulk_put(i, clks);
+
+	return ret;
+}
+#endif
 
 void clk_bulk_put(int num_clks, struct clk_bulk_data *clks)
 {
diff --git a/include/linux/clk.h b/include/linux/clk.h
index 12c96d9..073cb3b 100644
--- a/include/linux/clk.h
+++ b/include/linux/clk.h
@@ -680,10 +680,18 @@ static inline void clk_bulk_disable_unprepare(int num_clks,
 }
 
 #if defined(CONFIG_OF) && defined(CONFIG_COMMON_CLK)
+int __must_check of_clk_bulk_get(struct device_node *np, int num_clks,
+				 struct clk_bulk_data *clks);
 struct clk *of_clk_get(struct device_node *np, int index);
 struct clk *of_clk_get_by_name(struct device_node *np, const char *name);
 struct clk *of_clk_get_from_provider(struct of_phandle_args *clkspec);
 #else
+static inline int of_clk_bulk_get(struct device_node *np, int num_clks,
+			   struct clk_bulk_data *clks)
+{
+	return -ENOENT;
+}
+
 static inline struct clk *of_clk_get(struct device_node *np, int index)
 {
 	return ERR_PTR(-ENOENT);
-- 
2.7.4

Re: [PATCH V4 1/1] clk: bulk: add of_clk_bulk_get()

[Stephen Boyd]

On 09/26, Dong Aisheng wrote:
> 'clock-names' property is optinal in DT, so of_clk_bulk_get() is introduced

s/optinal/optional/

> here to handle this for DT users without 'clock-names' specified.
> 
> Cc: Stephen Boyd <sboyd@codeaurora.org>
> Cc: Michael Turquette <mturquette@baylibre.com>
> Cc: Russell King <linux@arm.linux.org.uk>
> Reported-by: Shawn Guo <shawnguo@kernel.org>
> Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
> 
> ---
> Changes since v3:
>  * fix build warning on the SH platform
> 
> Changes since v2:
>  * of_clk_bulk_get should return -ENOENT;
> 
> Changes since v1:
>  * using %pOF instead of full_name
> ---
>  drivers/clk/clk-bulk.c | 31 +++++++++++++++++++++++++++++++
>  include/linux/clk.h    |  8 ++++++++
>  2 files changed, 39 insertions(+)
> 
> diff --git a/drivers/clk/clk-bulk.c b/drivers/clk/clk-bulk.c
> index c834f5a..896aa3b 100644
> --- a/drivers/clk/clk-bulk.c
> +++ b/drivers/clk/clk-bulk.c
> @@ -19,6 +19,37 @@
>  #include <linux/clk.h>
>  #include <linux/device.h>
>  #include <linux/export.h>
> +#include <linux/of.h>
> +
> +#if defined(CONFIG_OF) && defined(CONFIG_COMMON_CLK)
> +int __must_check of_clk_bulk_get(struct device_node *np, int num_clks,
> +				 struct clk_bulk_data *clks)
> +{
> +	int ret;
> +	int i;
> +
> +	for (i = 0; i < num_clks; i++)
> +		clks[i].clk = NULL;
> +
> +	for (i = 0; i < num_clks; i++) {
> +		clks[i].clk = of_clk_get(np, i);
> +		if (IS_ERR(clks[i].clk)) {
> +			ret = PTR_ERR(clks[i].clk);
> +			pr_err("%pOF: Failed to get clk index: %d ret: %d\n",
> +			       np, i, ret);
> +			clks[i].clk = NULL;
> +			goto err;
> +		}
> +	}
> +
> +	return 0;
> +
> +err:
> +	clk_bulk_put(i, clks);
> +
> +	return ret;
> +}

Export the symbol?

> +#endif
>  
>  void clk_bulk_put(int num_clks, struct clk_bulk_data *clks)
>  {
> diff --git a/include/linux/clk.h b/include/linux/clk.h
> index 12c96d9..073cb3b 100644
> --- a/include/linux/clk.h
> +++ b/include/linux/clk.h
> @@ -680,10 +680,18 @@ static inline void clk_bulk_disable_unprepare(int num_clks,
>  }
>  
>  #if defined(CONFIG_OF) && defined(CONFIG_COMMON_CLK)
> +int __must_check of_clk_bulk_get(struct device_node *np, int num_clks,
> +				 struct clk_bulk_data *clks);
>  struct clk *of_clk_get(struct device_node *np, int index);
>  struct clk *of_clk_get_by_name(struct device_node *np, const char *name);
>  struct clk *of_clk_get_from_provider(struct of_phandle_args *clkspec);
>  #else
> +static inline int of_clk_bulk_get(struct device_node *np, int num_clks,

Do we need __must_check here too? We should do the same for the
other bulk get APIs. Seems we missed that part last time.

I'll fix all these things up when applying.

-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project

[PATCH V4 1/1] clk: bulk: add of_clk_bulk_get()

[Stephen Boyd]

On 09/26, Dong Aisheng wrote:
> 'clock-names' property is optinal in DT, so of_clk_bulk_get() is introduced

s/optinal/optional/

> here to handle this for DT users without 'clock-names' specified.
> 
> Cc: Stephen Boyd <sboyd@codeaurora.org>
> Cc: Michael Turquette <mturquette@baylibre.com>
> Cc: Russell King <linux@arm.linux.org.uk>
> Reported-by: Shawn Guo <shawnguo@kernel.org>
> Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
> 
> ---
> Changes since v3:
>  * fix build warning on the SH platform
> 
> Changes since v2:
>  * of_clk_bulk_get should return -ENOENT;
> 
> Changes since v1:
>  * using %pOF instead of full_name
> ---
>  drivers/clk/clk-bulk.c | 31 +++++++++++++++++++++++++++++++
>  include/linux/clk.h    |  8 ++++++++
>  2 files changed, 39 insertions(+)
> 
> diff --git a/drivers/clk/clk-bulk.c b/drivers/clk/clk-bulk.c
> index c834f5a..896aa3b 100644
> --- a/drivers/clk/clk-bulk.c
> +++ b/drivers/clk/clk-bulk.c
> @@ -19,6 +19,37 @@
>  #include <linux/clk.h>
>  #include <linux/device.h>
>  #include <linux/export.h>
> +#include <linux/of.h>
> +
> +#if defined(CONFIG_OF) && defined(CONFIG_COMMON_CLK)
> +int __must_check of_clk_bulk_get(struct device_node *np, int num_clks,
> +				 struct clk_bulk_data *clks)
> +{
> +	int ret;
> +	int i;
> +
> +	for (i = 0; i < num_clks; i++)
> +		clks[i].clk = NULL;
> +
> +	for (i = 0; i < num_clks; i++) {
> +		clks[i].clk = of_clk_get(np, i);
> +		if (IS_ERR(clks[i].clk)) {
> +			ret = PTR_ERR(clks[i].clk);
> +			pr_err("%pOF: Failed to get clk index: %d ret: %d\n",
> +			       np, i, ret);
> +			clks[i].clk = NULL;
> +			goto err;
> +		}
> +	}
> +
> +	return 0;
> +
> +err:
> +	clk_bulk_put(i, clks);
> +
> +	return ret;
> +}

Export the symbol?

> +#endif
>  
>  void clk_bulk_put(int num_clks, struct clk_bulk_data *clks)
>  {
> diff --git a/include/linux/clk.h b/include/linux/clk.h
> index 12c96d9..073cb3b 100644
> --- a/include/linux/clk.h
> +++ b/include/linux/clk.h
> @@ -680,10 +680,18 @@ static inline void clk_bulk_disable_unprepare(int num_clks,
>  }
>  
>  #if defined(CONFIG_OF) && defined(CONFIG_COMMON_CLK)
> +int __must_check of_clk_bulk_get(struct device_node *np, int num_clks,
> +				 struct clk_bulk_data *clks);
>  struct clk *of_clk_get(struct device_node *np, int index);
>  struct clk *of_clk_get_by_name(struct device_node *np, const char *name);
>  struct clk *of_clk_get_from_provider(struct of_phandle_args *clkspec);
>  #else
> +static inline int of_clk_bulk_get(struct device_node *np, int num_clks,

Do we need __must_check here too? We should do the same for the
other bulk get APIs. Seems we missed that part last time.

I'll fix all these things up when applying.

-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project

Re: [PATCH V4 1/1] clk: bulk: add of_clk_bulk_get()

[Dong Aisheng]

On Fri, Sep 29, 2017 at 03:48:21PM -0700, Stephen Boyd wrote:
> On 09/26, Dong Aisheng wrote:
> > 'clock-names' property is optinal in DT, so of_clk_bulk_get() is introduced
> 
> s/optinal/optional/
> 

Got it.

> > here to handle this for DT users without 'clock-names' specified.
> > 
> > Cc: Stephen Boyd <sboyd@codeaurora.org>
> > Cc: Michael Turquette <mturquette@baylibre.com>
> > Cc: Russell King <linux@arm.linux.org.uk>
> > Reported-by: Shawn Guo <shawnguo@kernel.org>
> > Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
> > 
> > ---
> > Changes since v3:
> >  * fix build warning on the SH platform
> > 
> > Changes since v2:
> >  * of_clk_bulk_get should return -ENOENT;
> > 
> > Changes since v1:
> >  * using %pOF instead of full_name
> > ---
> >  drivers/clk/clk-bulk.c | 31 +++++++++++++++++++++++++++++++
> >  include/linux/clk.h    |  8 ++++++++
> >  2 files changed, 39 insertions(+)
> > 
> > diff --git a/drivers/clk/clk-bulk.c b/drivers/clk/clk-bulk.c
> > index c834f5a..896aa3b 100644
> > --- a/drivers/clk/clk-bulk.c
> > +++ b/drivers/clk/clk-bulk.c
> > @@ -19,6 +19,37 @@
> >  #include <linux/clk.h>
> >  #include <linux/device.h>
> >  #include <linux/export.h>
> > +#include <linux/of.h>
> > +
> > +#if defined(CONFIG_OF) && defined(CONFIG_COMMON_CLK)
> > +int __must_check of_clk_bulk_get(struct device_node *np, int num_clks,
> > +				 struct clk_bulk_data *clks)
> > +{
> > +	int ret;
> > +	int i;
> > +
> > +	for (i = 0; i < num_clks; i++)
> > +		clks[i].clk = NULL;
> > +
> > +	for (i = 0; i < num_clks; i++) {
> > +		clks[i].clk = of_clk_get(np, i);
> > +		if (IS_ERR(clks[i].clk)) {
> > +			ret = PTR_ERR(clks[i].clk);
> > +			pr_err("%pOF: Failed to get clk index: %d ret: %d\n",
> > +			       np, i, ret);
> > +			clks[i].clk = NULL;
> > +			goto err;
> > +		}
> > +	}
> > +
> > +	return 0;
> > +
> > +err:
> > +	clk_bulk_put(i, clks);
> > +
> > +	return ret;
> > +}
> 
> Export the symbol?
> 

Got it.

> > +#endif
> >  
> >  void clk_bulk_put(int num_clks, struct clk_bulk_data *clks)
> >  {
> > diff --git a/include/linux/clk.h b/include/linux/clk.h
> > index 12c96d9..073cb3b 100644
> > --- a/include/linux/clk.h
> > +++ b/include/linux/clk.h
> > @@ -680,10 +680,18 @@ static inline void clk_bulk_disable_unprepare(int num_clks,
> >  }
> >  
> >  #if defined(CONFIG_OF) && defined(CONFIG_COMMON_CLK)
> > +int __must_check of_clk_bulk_get(struct device_node *np, int num_clks,
> > +				 struct clk_bulk_data *clks);
> >  struct clk *of_clk_get(struct device_node *np, int index);
> >  struct clk *of_clk_get_by_name(struct device_node *np, const char *name);
> >  struct clk *of_clk_get_from_provider(struct of_phandle_args *clkspec);
> >  #else
> > +static inline int of_clk_bulk_get(struct device_node *np, int num_clks,
> 
> Do we need __must_check here too?

Yes, you're absolutely right.

of_clk_bulk_get is special as it returns error, so should add __must_check.

> We should do the same for the
> other bulk get APIs. Seems we missed that part last time.
> 

Currently for !CONFIG_HAVE_CLK case, all APIs return 0.
!CONFIG_HAVE_CLK
clk_bulk_get		return 0
devm_clk_bulk_get	return 0
clk_bulk_enable		return 0
clk_bulk_prepare	return 0

Do you think we still need add __must_check for them?

And for CONFIG_HAVE_CLK case, all __must_check already added.

int __must_check clk_bulk_get
int __must_check devm_clk_bulk_get
int __must_check clk_bulk_enable
int __must_check clk_bulk_prepare

And no need for void function.
void clk_bulk_put
void clk_bulk_unprepare
void clk_bulk_disable

> I'll fix all these things up when applying.
> 

I did not see this in latest tree.
Suppose i should resend it with above things fixed, right?

Regards
Dong Aisheng

[PATCH V4 1/1] clk: bulk: add of_clk_bulk_get()

[Dong Aisheng]

On Fri, Sep 29, 2017 at 03:48:21PM -0700, Stephen Boyd wrote:
> On 09/26, Dong Aisheng wrote:
> > 'clock-names' property is optinal in DT, so of_clk_bulk_get() is introduced
> 
> s/optinal/optional/
> 

Got it.

> > here to handle this for DT users without 'clock-names' specified.
> > 
> > Cc: Stephen Boyd <sboyd@codeaurora.org>
> > Cc: Michael Turquette <mturquette@baylibre.com>
> > Cc: Russell King <linux@arm.linux.org.uk>
> > Reported-by: Shawn Guo <shawnguo@kernel.org>
> > Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
> > 
> > ---
> > Changes since v3:
> >  * fix build warning on the SH platform
> > 
> > Changes since v2:
> >  * of_clk_bulk_get should return -ENOENT;
> > 
> > Changes since v1:
> >  * using %pOF instead of full_name
> > ---
> >  drivers/clk/clk-bulk.c | 31 +++++++++++++++++++++++++++++++
> >  include/linux/clk.h    |  8 ++++++++
> >  2 files changed, 39 insertions(+)
> > 
> > diff --git a/drivers/clk/clk-bulk.c b/drivers/clk/clk-bulk.c
> > index c834f5a..896aa3b 100644
> > --- a/drivers/clk/clk-bulk.c
> > +++ b/drivers/clk/clk-bulk.c
> > @@ -19,6 +19,37 @@
> >  #include <linux/clk.h>
> >  #include <linux/device.h>
> >  #include <linux/export.h>
> > +#include <linux/of.h>
> > +
> > +#if defined(CONFIG_OF) && defined(CONFIG_COMMON_CLK)
> > +int __must_check of_clk_bulk_get(struct device_node *np, int num_clks,
> > +				 struct clk_bulk_data *clks)
> > +{
> > +	int ret;
> > +	int i;
> > +
> > +	for (i = 0; i < num_clks; i++)
> > +		clks[i].clk = NULL;
> > +
> > +	for (i = 0; i < num_clks; i++) {
> > +		clks[i].clk = of_clk_get(np, i);
> > +		if (IS_ERR(clks[i].clk)) {
> > +			ret = PTR_ERR(clks[i].clk);
> > +			pr_err("%pOF: Failed to get clk index: %d ret: %d\n",
> > +			       np, i, ret);
> > +			clks[i].clk = NULL;
> > +			goto err;
> > +		}
> > +	}
> > +
> > +	return 0;
> > +
> > +err:
> > +	clk_bulk_put(i, clks);
> > +
> > +	return ret;
> > +}
> 
> Export the symbol?
> 

Got it.

> > +#endif
> >  
> >  void clk_bulk_put(int num_clks, struct clk_bulk_data *clks)
> >  {
> > diff --git a/include/linux/clk.h b/include/linux/clk.h
> > index 12c96d9..073cb3b 100644
> > --- a/include/linux/clk.h
> > +++ b/include/linux/clk.h
> > @@ -680,10 +680,18 @@ static inline void clk_bulk_disable_unprepare(int num_clks,
> >  }
> >  
> >  #if defined(CONFIG_OF) && defined(CONFIG_COMMON_CLK)
> > +int __must_check of_clk_bulk_get(struct device_node *np, int num_clks,
> > +				 struct clk_bulk_data *clks);
> >  struct clk *of_clk_get(struct device_node *np, int index);
> >  struct clk *of_clk_get_by_name(struct device_node *np, const char *name);
> >  struct clk *of_clk_get_from_provider(struct of_phandle_args *clkspec);
> >  #else
> > +static inline int of_clk_bulk_get(struct device_node *np, int num_clks,
> 
> Do we need __must_check here too?

Yes, you're absolutely right.

of_clk_bulk_get is special as it returns error, so should add __must_check.

> We should do the same for the
> other bulk get APIs. Seems we missed that part last time.
> 

Currently for !CONFIG_HAVE_CLK case, all APIs return 0.
!CONFIG_HAVE_CLK
clk_bulk_get		return 0
devm_clk_bulk_get	return 0
clk_bulk_enable		return 0
clk_bulk_prepare	return 0

Do you think we still need add __must_check for them?

And for CONFIG_HAVE_CLK case, all __must_check already added.

int __must_check clk_bulk_get
int __must_check devm_clk_bulk_get
int __must_check clk_bulk_enable
int __must_check clk_bulk_prepare

And no need for void function.
void clk_bulk_put
void clk_bulk_unprepare
void clk_bulk_disable

> I'll fix all these things up when applying.
> 

I did not see this in latest tree.
Suppose i should resend it with above things fixed, right?

Regards
Dong Aisheng

Re: [PATCH V4 1/1] clk: bulk: add of_clk_bulk_get()

[Stephen Boyd]

On 12/20, Dong Aisheng wrote:
> On Fri, Sep 29, 2017 at 03:48:21PM -0700, Stephen Boyd wrote:
> > On 09/26, Dong Aisheng wrote:
> > > here to handle this for DT users without 'clock-names' specified.
> 
> > > +#endif
> > >  
> > >  void clk_bulk_put(int num_clks, struct clk_bulk_data *clks)
> > >  {
> > > diff --git a/include/linux/clk.h b/include/linux/clk.h
> > > index 12c96d9..073cb3b 100644
> > > --- a/include/linux/clk.h
> > > +++ b/include/linux/clk.h
> > > @@ -680,10 +680,18 @@ static inline void clk_bulk_disable_unprepare(int num_clks,
> > >  }
> > >  
> > >  #if defined(CONFIG_OF) && defined(CONFIG_COMMON_CLK)
> > > +int __must_check of_clk_bulk_get(struct device_node *np, int num_clks,
> > > +				 struct clk_bulk_data *clks);
> > >  struct clk *of_clk_get(struct device_node *np, int index);
> > >  struct clk *of_clk_get_by_name(struct device_node *np, const char *name);
> > >  struct clk *of_clk_get_from_provider(struct of_phandle_args *clkspec);
> > >  #else
> > > +static inline int of_clk_bulk_get(struct device_node *np, int num_clks,
> > 
> > Do we need __must_check here too?
> 
> Yes, you're absolutely right.
> 
> of_clk_bulk_get is special as it returns error, so should add __must_check.
> 
> > We should do the same for the
> > other bulk get APIs. Seems we missed that part last time.
> > 
> 
> Currently for !CONFIG_HAVE_CLK case, all APIs return 0.
> !CONFIG_HAVE_CLK
> clk_bulk_get		return 0
> devm_clk_bulk_get	return 0
> clk_bulk_enable		return 0
> clk_bulk_prepare	return 0
> 
> Do you think we still need add __must_check for them?

Yes, we need it even when !CONFIG_HAVE_CLK because it allows us
to catch missing checking return values in the non-clk compile
configurations too. More test coverage.

> 
> And for CONFIG_HAVE_CLK case, all __must_check already added.
> 
> int __must_check clk_bulk_get
> int __must_check devm_clk_bulk_get
> int __must_check clk_bulk_enable
> int __must_check clk_bulk_prepare
> 
> And no need for void function.
> void clk_bulk_put
> void clk_bulk_unprepare
> void clk_bulk_disable
> 
> > I'll fix all these things up when applying.
> > 
> 
> I did not see this in latest tree.
> Suppose i should resend it with above things fixed, right?
> 

I dropped it because it seems like maybe we don't need
of_clk_bulk_get(), but more like clk_get_all() or something like
that to acquire all clks for a device. It seems like it isn't DT
specific, and so we should just provide the "all" API instead of
some DT specific one that needs to know how many clks to get. I
think I sent a similar reply on some other thread and added you
to it.

-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project

[PATCH V4 1/1] clk: bulk: add of_clk_bulk_get()

[Stephen Boyd]

On 12/20, Dong Aisheng wrote:
> On Fri, Sep 29, 2017 at 03:48:21PM -0700, Stephen Boyd wrote:
> > On 09/26, Dong Aisheng wrote:
> > > here to handle this for DT users without 'clock-names' specified.
> 
> > > +#endif
> > >  
> > >  void clk_bulk_put(int num_clks, struct clk_bulk_data *clks)
> > >  {
> > > diff --git a/include/linux/clk.h b/include/linux/clk.h
> > > index 12c96d9..073cb3b 100644
> > > --- a/include/linux/clk.h
> > > +++ b/include/linux/clk.h
> > > @@ -680,10 +680,18 @@ static inline void clk_bulk_disable_unprepare(int num_clks,
> > >  }
> > >  
> > >  #if defined(CONFIG_OF) && defined(CONFIG_COMMON_CLK)
> > > +int __must_check of_clk_bulk_get(struct device_node *np, int num_clks,
> > > +				 struct clk_bulk_data *clks);
> > >  struct clk *of_clk_get(struct device_node *np, int index);
> > >  struct clk *of_clk_get_by_name(struct device_node *np, const char *name);
> > >  struct clk *of_clk_get_from_provider(struct of_phandle_args *clkspec);
> > >  #else
> > > +static inline int of_clk_bulk_get(struct device_node *np, int num_clks,
> > 
> > Do we need __must_check here too?
> 
> Yes, you're absolutely right.
> 
> of_clk_bulk_get is special as it returns error, so should add __must_check.
> 
> > We should do the same for the
> > other bulk get APIs. Seems we missed that part last time.
> > 
> 
> Currently for !CONFIG_HAVE_CLK case, all APIs return 0.
> !CONFIG_HAVE_CLK
> clk_bulk_get		return 0
> devm_clk_bulk_get	return 0
> clk_bulk_enable		return 0
> clk_bulk_prepare	return 0
> 
> Do you think we still need add __must_check for them?

Yes, we need it even when !CONFIG_HAVE_CLK because it allows us
to catch missing checking return values in the non-clk compile
configurations too. More test coverage.

> 
> And for CONFIG_HAVE_CLK case, all __must_check already added.
> 
> int __must_check clk_bulk_get
> int __must_check devm_clk_bulk_get
> int __must_check clk_bulk_enable
> int __must_check clk_bulk_prepare
> 
> And no need for void function.
> void clk_bulk_put
> void clk_bulk_unprepare
> void clk_bulk_disable
> 
> > I'll fix all these things up when applying.
> > 
> 
> I did not see this in latest tree.
> Suppose i should resend it with above things fixed, right?
> 

I dropped it because it seems like maybe we don't need
of_clk_bulk_get(), but more like clk_get_all() or something like
that to acquire all clks for a device. It seems like it isn't DT
specific, and so we should just provide the "all" API instead of
some DT specific one that needs to know how many clks to get. I
think I sent a similar reply on some other thread and added you
to it.

-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project

Re: [PATCH V4 1/1] clk: bulk: add of_clk_bulk_get()

[Dong Aisheng]

On Thu, Dec 21, 2017 at 03:20:32PM -0800, Stephen Boyd wrote:
> On 12/20, Dong Aisheng wrote:
> > On Fri, Sep 29, 2017 at 03:48:21PM -0700, Stephen Boyd wrote:
> > > On 09/26, Dong Aisheng wrote:
> > > > here to handle this for DT users without 'clock-names' specified.
> > 
> > > > +#endif
> > > >  
> > > >  void clk_bulk_put(int num_clks, struct clk_bulk_data *clks)
> > > >  {
> > > > diff --git a/include/linux/clk.h b/include/linux/clk.h
> > > > index 12c96d9..073cb3b 100644
> > > > --- a/include/linux/clk.h
> > > > +++ b/include/linux/clk.h
> > > > @@ -680,10 +680,18 @@ static inline void clk_bulk_disable_unprepare(int num_clks,
> > > >  }
> > > >  
> > > >  #if defined(CONFIG_OF) && defined(CONFIG_COMMON_CLK)
> > > > +int __must_check of_clk_bulk_get(struct device_node *np, int num_clks,
> > > > +				 struct clk_bulk_data *clks);
> > > >  struct clk *of_clk_get(struct device_node *np, int index);
> > > >  struct clk *of_clk_get_by_name(struct device_node *np, const char *name);
> > > >  struct clk *of_clk_get_from_provider(struct of_phandle_args *clkspec);
> > > >  #else
> > > > +static inline int of_clk_bulk_get(struct device_node *np, int num_clks,
> > > 
> > > Do we need __must_check here too?
> > 
> > Yes, you're absolutely right.
> > 
> > of_clk_bulk_get is special as it returns error, so should add __must_check.
> > 
> > > We should do the same for the
> > > other bulk get APIs. Seems we missed that part last time.
> > > 
> > 
> > Currently for !CONFIG_HAVE_CLK case, all APIs return 0.
> > !CONFIG_HAVE_CLK
> > clk_bulk_get		return 0
> > devm_clk_bulk_get	return 0
> > clk_bulk_enable		return 0
> > clk_bulk_prepare	return 0
> > 
> > Do you think we still need add __must_check for them?
> 
> Yes, we need it even when !CONFIG_HAVE_CLK because it allows us
> to catch missing checking return values in the non-clk compile
> configurations too. More test coverage.
> 

Ok, understand.
May cook a patch to fix them.

> > 
> > And for CONFIG_HAVE_CLK case, all __must_check already added.
> > 
> > int __must_check clk_bulk_get
> > int __must_check devm_clk_bulk_get
> > int __must_check clk_bulk_enable
> > int __must_check clk_bulk_prepare
> > 
> > And no need for void function.
> > void clk_bulk_put
> > void clk_bulk_unprepare
> > void clk_bulk_disable
> > 
> > > I'll fix all these things up when applying.
> > > 
> > 
> > I did not see this in latest tree.
> > Suppose i should resend it with above things fixed, right?
> > 
> 
> I dropped it because it seems like maybe we don't need
> of_clk_bulk_get(), but more like clk_get_all() or something like
> that to acquire all clks for a device. It seems like it isn't DT
> specific, and so we should just provide the "all" API instead of
> some DT specific one that needs to know how many clks to get. I
> think I sent a similar reply on some other thread and added you
> to it.
> 

I probably missed it before.
Will check later.

Thanks for reminder.

Regards
Dong Aisheng

[PATCH V4 1/1] clk: bulk: add of_clk_bulk_get()

[Dong Aisheng]

On Thu, Dec 21, 2017 at 03:20:32PM -0800, Stephen Boyd wrote:
> On 12/20, Dong Aisheng wrote:
> > On Fri, Sep 29, 2017 at 03:48:21PM -0700, Stephen Boyd wrote:
> > > On 09/26, Dong Aisheng wrote:
> > > > here to handle this for DT users without 'clock-names' specified.
> > 
> > > > +#endif
> > > >  
> > > >  void clk_bulk_put(int num_clks, struct clk_bulk_data *clks)
> > > >  {
> > > > diff --git a/include/linux/clk.h b/include/linux/clk.h
> > > > index 12c96d9..073cb3b 100644
> > > > --- a/include/linux/clk.h
> > > > +++ b/include/linux/clk.h
> > > > @@ -680,10 +680,18 @@ static inline void clk_bulk_disable_unprepare(int num_clks,
> > > >  }
> > > >  
> > > >  #if defined(CONFIG_OF) && defined(CONFIG_COMMON_CLK)
> > > > +int __must_check of_clk_bulk_get(struct device_node *np, int num_clks,
> > > > +				 struct clk_bulk_data *clks);
> > > >  struct clk *of_clk_get(struct device_node *np, int index);
> > > >  struct clk *of_clk_get_by_name(struct device_node *np, const char *name);
> > > >  struct clk *of_clk_get_from_provider(struct of_phandle_args *clkspec);
> > > >  #else
> > > > +static inline int of_clk_bulk_get(struct device_node *np, int num_clks,
> > > 
> > > Do we need __must_check here too?
> > 
> > Yes, you're absolutely right.
> > 
> > of_clk_bulk_get is special as it returns error, so should add __must_check.
> > 
> > > We should do the same for the
> > > other bulk get APIs. Seems we missed that part last time.
> > > 
> > 
> > Currently for !CONFIG_HAVE_CLK case, all APIs return 0.
> > !CONFIG_HAVE_CLK
> > clk_bulk_get		return 0
> > devm_clk_bulk_get	return 0
> > clk_bulk_enable		return 0
> > clk_bulk_prepare	return 0
> > 
> > Do you think we still need add __must_check for them?
> 
> Yes, we need it even when !CONFIG_HAVE_CLK because it allows us
> to catch missing checking return values in the non-clk compile
> configurations too. More test coverage.
> 

Ok, understand.
May cook a patch to fix them.

> > 
> > And for CONFIG_HAVE_CLK case, all __must_check already added.
> > 
> > int __must_check clk_bulk_get
> > int __must_check devm_clk_bulk_get
> > int __must_check clk_bulk_enable
> > int __must_check clk_bulk_prepare
> > 
> > And no need for void function.
> > void clk_bulk_put
> > void clk_bulk_unprepare
> > void clk_bulk_disable
> > 
> > > I'll fix all these things up when applying.
> > > 
> > 
> > I did not see this in latest tree.
> > Suppose i should resend it with above things fixed, right?
> > 
> 
> I dropped it because it seems like maybe we don't need
> of_clk_bulk_get(), but more like clk_get_all() or something like
> that to acquire all clks for a device. It seems like it isn't DT
> specific, and so we should just provide the "all" API instead of
> some DT specific one that needs to know how many clks to get. I
> think I sent a similar reply on some other thread and added you
> to it.
> 

I probably missed it before.
Will check later.

Thanks for reminder.

Regards
Dong Aisheng