* [PATCH] clk: mvebu: armada-37xx-periph: Fix the clock provider registration
@ 2016-09-29 14:28 Gregory CLEMENT
2016-10-07 8:03 ` Gregory CLEMENT
2016-10-17 22:30 ` Stephen Boyd
0 siblings, 2 replies; 4+ messages in thread
From: Gregory CLEMENT @ 2016-09-29 14:28 UTC (permalink / raw)
To: Mike Turquette, Stephen Boyd, linux-clk, linux-kernel
Cc: Jason Cooper, Andrew Lunn, Sebastian Hesselbarth,
Gregory CLEMENT, Thomas Petazzoni, linux-arm-kernel
While trying using a peripheral clock on a driver, I saw that the clock
pointer returned by the provider was NULL.
The problem was a missing indirection. It was the pointer stored in the
hws array which needed to be updated not the value it contains.
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
---
drivers/clk/mvebu/armada-37xx-periph.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/clk/mvebu/armada-37xx-periph.c b/drivers/clk/mvebu/armada-37xx-periph.c
index 45905fc0d75b..d5dfbad4ceab 100644
--- a/drivers/clk/mvebu/armada-37xx-periph.c
+++ b/drivers/clk/mvebu/armada-37xx-periph.c
@@ -305,7 +305,7 @@ static const struct of_device_id armada_3700_periph_clock_of_match[] = {
};
static int armada_3700_add_composite_clk(const struct clk_periph_data *data,
void __iomem *reg, spinlock_t *lock,
- struct device *dev, struct clk_hw *hw)
+ struct device *dev, struct clk_hw **hw)
{
const struct clk_ops *mux_ops = NULL, *gate_ops = NULL,
*rate_ops = NULL;
@@ -353,13 +353,13 @@ static int armada_3700_add_composite_clk(const struct clk_periph_data *data,
}
}
- hw = clk_hw_register_composite(dev, data->name, data->parent_names,
+ *hw = clk_hw_register_composite(dev, data->name, data->parent_names,
data->num_parents, mux_hw,
mux_ops, rate_hw, rate_ops,
gate_hw, gate_ops, CLK_IGNORE_UNUSED);
- if (IS_ERR(hw))
- return PTR_ERR(hw);
+ if (IS_ERR(*hw))
+ return PTR_ERR(*hw);
return 0;
}
@@ -400,7 +400,7 @@ static int armada_3700_periph_clock_probe(struct platform_device *pdev)
spin_lock_init(&driver_data->lock);
for (i = 0; i < num_periph; i++) {
- struct clk_hw *hw = driver_data->hw_data->hws[i];
+ struct clk_hw **hw = &driver_data->hw_data->hws[i];
if (armada_3700_add_composite_clk(&data[i], reg,
&driver_data->lock, dev, hw))
--
2.9.3
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] clk: mvebu: armada-37xx-periph: Fix the clock provider registration
2016-09-29 14:28 [PATCH] clk: mvebu: armada-37xx-periph: Fix the clock provider registration Gregory CLEMENT
@ 2016-10-07 8:03 ` Gregory CLEMENT
2016-10-17 22:28 ` Stephen Boyd
2016-10-17 22:30 ` Stephen Boyd
1 sibling, 1 reply; 4+ messages in thread
From: Gregory CLEMENT @ 2016-10-07 8:03 UTC (permalink / raw)
To: Stephen Boyd, Mike Turquette
Cc: linux-clk, linux-kernel, Jason Cooper, Andrew Lunn,
Sebastian Hesselbarth, Thomas Petazzoni, linux-arm-kernel
Hi Stephen and Mike
On jeu., sept. 29 2016, Gregory CLEMENT <gregory.clement@free-electrons.com> wrote:
> While trying using a peripheral clock on a driver, I saw that the clock
> pointer returned by the provider was NULL.
>
> The problem was a missing indirection. It was the pointer stored in the
> hws array which needed to be updated not the value it contains.
>
> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
I saw that you already did the pull request for the clk subsystem.
Do you consider to do a another pull request for the fixes?
It would be nice to have this driver working since the rc1 :)
For this driver an other fix is needed:
http://lists.infradead.org/pipermail/linux-arm-kernel/2016-September/459640.html
Thanks!
Gregory
> ---
> drivers/clk/mvebu/armada-37xx-periph.c | 10 +++++-----
> 1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/clk/mvebu/armada-37xx-periph.c b/drivers/clk/mvebu/armada-37xx-periph.c
> index 45905fc0d75b..d5dfbad4ceab 100644
> --- a/drivers/clk/mvebu/armada-37xx-periph.c
> +++ b/drivers/clk/mvebu/armada-37xx-periph.c
> @@ -305,7 +305,7 @@ static const struct of_device_id armada_3700_periph_clock_of_match[] = {
> };
> static int armada_3700_add_composite_clk(const struct clk_periph_data *data,
> void __iomem *reg, spinlock_t *lock,
> - struct device *dev, struct clk_hw *hw)
> + struct device *dev, struct clk_hw **hw)
> {
> const struct clk_ops *mux_ops = NULL, *gate_ops = NULL,
> *rate_ops = NULL;
> @@ -353,13 +353,13 @@ static int armada_3700_add_composite_clk(const struct clk_periph_data *data,
> }
> }
>
> - hw = clk_hw_register_composite(dev, data->name, data->parent_names,
> + *hw = clk_hw_register_composite(dev, data->name, data->parent_names,
> data->num_parents, mux_hw,
> mux_ops, rate_hw, rate_ops,
> gate_hw, gate_ops, CLK_IGNORE_UNUSED);
>
> - if (IS_ERR(hw))
> - return PTR_ERR(hw);
> + if (IS_ERR(*hw))
> + return PTR_ERR(*hw);
>
> return 0;
> }
> @@ -400,7 +400,7 @@ static int armada_3700_periph_clock_probe(struct platform_device *pdev)
> spin_lock_init(&driver_data->lock);
>
> for (i = 0; i < num_periph; i++) {
> - struct clk_hw *hw = driver_data->hw_data->hws[i];
> + struct clk_hw **hw = &driver_data->hw_data->hws[i];
>
> if (armada_3700_add_composite_clk(&data[i], reg,
> &driver_data->lock, dev, hw))
> --
> 2.9.3
>
--
Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] clk: mvebu: armada-37xx-periph: Fix the clock provider registration
2016-10-07 8:03 ` Gregory CLEMENT
@ 2016-10-17 22:28 ` Stephen Boyd
0 siblings, 0 replies; 4+ messages in thread
From: Stephen Boyd @ 2016-10-17 22:28 UTC (permalink / raw)
To: Gregory CLEMENT
Cc: Mike Turquette, linux-clk, linux-kernel, Jason Cooper,
Andrew Lunn, Sebastian Hesselbarth, Thomas Petazzoni,
linux-arm-kernel
On 10/07, Gregory CLEMENT wrote:
> Hi Stephen and Mike
>
> On jeu., sept. 29 2016, Gregory CLEMENT <gregory.clement@free-electrons.com> wrote:
>
> > While trying using a peripheral clock on a driver, I saw that the clock
> > pointer returned by the provider was NULL.
> >
> > The problem was a missing indirection. It was the pointer stored in the
> > hws array which needed to be updated not the value it contains.
> >
> > Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
>
> I saw that you already did the pull request for the clk subsystem.
>
> Do you consider to do a another pull request for the fixes?
>
> It would be nice to have this driver working since the rc1 :)
>
> For this driver an other fix is needed:
> http://lists.infradead.org/pipermail/linux-arm-kernel/2016-September/459640.html
>
Yep I was on vacation/conferencing during the merge window. I'll
be sending off a set of fixes in a couple days.
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] clk: mvebu: armada-37xx-periph: Fix the clock provider registration
2016-09-29 14:28 [PATCH] clk: mvebu: armada-37xx-periph: Fix the clock provider registration Gregory CLEMENT
2016-10-07 8:03 ` Gregory CLEMENT
@ 2016-10-17 22:30 ` Stephen Boyd
1 sibling, 0 replies; 4+ messages in thread
From: Stephen Boyd @ 2016-10-17 22:30 UTC (permalink / raw)
To: Gregory CLEMENT
Cc: Mike Turquette, linux-clk, linux-kernel, Jason Cooper,
Andrew Lunn, Sebastian Hesselbarth, Thomas Petazzoni,
linux-arm-kernel
On 09/29, Gregory CLEMENT wrote:
> While trying using a peripheral clock on a driver, I saw that the clock
> pointer returned by the provider was NULL.
>
> The problem was a missing indirection. It was the pointer stored in the
> hws array which needed to be updated not the value it contains.
>
> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
> ---
Applied to clk-fixes
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply [flat|nested] 4+ messages in thread
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2016-09-29 14:28 [PATCH] clk: mvebu: armada-37xx-periph: Fix the clock provider registration Gregory CLEMENT
2016-10-07 8:03 ` Gregory CLEMENT
2016-10-17 22:28 ` Stephen Boyd
2016-10-17 22:30 ` Stephen Boyd
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