diff mbox

[v4] ARM: w90x900: let clk_disable() return immediately if clk is NULL

Message ID 1474221559-21269-1-git-send-email-yamada.masahiro@socionext.com
State Accepted
Commit e1ffaa551cfbc5fc86bb6f40d41adb5e5106ab6c
Headers show

Commit Message

Masahiro Yamada Sept. 18, 2016, 5:59 p.m. UTC
In many of clk_disable() implementations, it is a no-op for a NULL
pointer input, but this is one of the exceptions.

Making it treewide consistent will allow clock consumers to call
clk_disable() without NULL pointer check.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

Acked-by: Wan Zongshun <mcuos.com@gmail.com>

---

Changes in v4:
  - Split into per-arch patches

Changes in v3:
  - Return only when clk is NULL.  Do not take care of error pointer.

Changes in v2:
  - Rebase on Linux 4.6-rc1

 arch/arm/mach-w90x900/clock.c | 3 +++
 1 file changed, 3 insertions(+)

-- 
1.9.1


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Comments

Masahiro Yamada Jan. 28, 2017, 1:30 p.m. UTC | #1
Hi Wan,

Ping again.

Please pick up this patch!

2016-11-06 0:45 GMT+09:00 Masahiro Yamada <yamada.masahiro@socionext.com>:
> Hi Wan,

>

> This patch was acked by you long before,

> but it has not been pulled-in yet for some reasons.

>

> Now the patch was split per platform.

>

> So, could you apply this patch to your tree, please?

>

>

> 2016-09-19 2:59 GMT+09:00 Masahiro Yamada <yamada.masahiro@socionext.com>:

>> In many of clk_disable() implementations, it is a no-op for a NULL

>> pointer input, but this is one of the exceptions.

>>

>> Making it treewide consistent will allow clock consumers to call

>> clk_disable() without NULL pointer check.

>>

>> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

>> Acked-by: Wan Zongshun <mcuos.com@gmail.com>

>> ---

>>

>> Changes in v4:

>>   - Split into per-arch patches

>>

>> Changes in v3:

>>   - Return only when clk is NULL.  Do not take care of error pointer.

>>

>> Changes in v2:

>>   - Rebase on Linux 4.6-rc1

>>

>>  arch/arm/mach-w90x900/clock.c | 3 +++

>>  1 file changed, 3 insertions(+)

>>

>> diff --git a/arch/arm/mach-w90x900/clock.c b/arch/arm/mach-w90x900/clock.c

>> index 2c371ff..ac6fd1a 100644

>> --- a/arch/arm/mach-w90x900/clock.c

>> +++ b/arch/arm/mach-w90x900/clock.c

>> @@ -46,6 +46,9 @@ void clk_disable(struct clk *clk)

>>  {

>>         unsigned long flags;

>>

>> +       if (!clk)

>> +               return;

>> +

>>         WARN_ON(clk->enabled == 0);

>>

>>         spin_lock_irqsave(&clocks_lock, flags);

>> --

>> 1.9.1

>>

>>

>> _______________________________________________

>> linux-arm-kernel mailing list

>> linux-arm-kernel@lists.infradead.org

>> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

>

>

>

> --

> Best Regards

> Masahiro Yamada




-- 
Best Regards
Masahiro Yamada

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diff mbox

Patch

diff --git a/arch/arm/mach-w90x900/clock.c b/arch/arm/mach-w90x900/clock.c
index 2c371ff..ac6fd1a 100644
--- a/arch/arm/mach-w90x900/clock.c
+++ b/arch/arm/mach-w90x900/clock.c
@@ -46,6 +46,9 @@  void clk_disable(struct clk *clk)
 {
 	unsigned long flags;
 
+	if (!clk)
+		return;
+
 	WARN_ON(clk->enabled == 0);
 
 	spin_lock_irqsave(&clocks_lock, flags);