[PATCH] bus: ti-sysc: Remove unpaired sysc_clkdm_deny_idle()

[PATCH] bus: ti-sysc: Remove unpaired sysc_clkdm_deny_idle()

[Tony Lindgren]

Commit d098913a10f8 ("bus: ti-sysc: Fix clock handling for no-idle
quirks") fixed handling for no-idle quirk modules that are not enabled
by the bootloader.

But it also caused unpaired clockdomain calls that won't allow idling
the system. That's because clkdm_allow_idle_nolock() and
clkdm_deny_idle_nolock() have usage count with clkdm->forcewake_count.

Let's drop the unpaired sysc_clkdm_deny_idle() to fix idling of devices.

Fixes: d098913a10f8 ("bus: ti-sysc: Fix clock handling for no-idle quirks")
Cc: Keerthy <j-keerthy@ti.com>
Cc: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---
 drivers/bus/ti-sysc.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c
--- a/drivers/bus/ti-sysc.c
+++ b/drivers/bus/ti-sysc.c
@@ -2363,7 +2363,6 @@ static void ti_sysc_idle(struct work_struct *work)
 	 */
 	if (ddata->cfg.quirks & (SYSC_QUIRK_NO_IDLE |
 				 SYSC_QUIRK_NO_IDLE_ON_INIT)) {
-		sysc_clkdm_deny_idle(ddata);
 		sysc_disable_main_clocks(ddata);
 		sysc_disable_opt_clocks(ddata);
 		sysc_clkdm_allow_idle(ddata);
-- 
2.23.0

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Re: [PATCH] bus: ti-sysc: Remove unpaired sysc_clkdm_deny_idle()

[Keerthy]

On 07/09/19 1:31 AM, Tony Lindgren wrote:
> Commit d098913a10f8 ("bus: ti-sysc: Fix clock handling for no-idle
> quirks") fixed handling for no-idle quirk modules that are not enabled
> by the bootloader.
> 
> But it also caused unpaired clockdomain calls that won't allow idling
> the system. That's because clkdm_allow_idle_nolock() and
> clkdm_deny_idle_nolock() have usage count with clkdm->forcewake_count.
> 
> Let's drop the unpaired sysc_clkdm_deny_idle() to fix idling of devices.

Tested-by: Keerthy <j-keerthy@ti.com>

I believe still the previous fix [1] for nfs boot is still not on 
linux-next. Are you planning on more testing or it will be queued as fixes?


[1] https://lkml.org/lkml/2019/9/5/616

- Keerthy

> 
> Fixes: d098913a10f8 ("bus: ti-sysc: Fix clock handling for no-idle quirks")
> Cc: Keerthy <j-keerthy@ti.com>
> Cc: Vignesh Raghavendra <vigneshr@ti.com>
> Signed-off-by: Tony Lindgren <tony@atomide.com>
> ---
>   drivers/bus/ti-sysc.c | 1 -
>   1 file changed, 1 deletion(-)
> 
> diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c
> --- a/drivers/bus/ti-sysc.c
> +++ b/drivers/bus/ti-sysc.c
> @@ -2363,7 +2363,6 @@ static void ti_sysc_idle(struct work_struct *work)
>   	 */
>   	if (ddata->cfg.quirks & (SYSC_QUIRK_NO_IDLE |
>   				 SYSC_QUIRK_NO_IDLE_ON_INIT)) {
> -		sysc_clkdm_deny_idle(ddata);
>   		sysc_disable_main_clocks(ddata);
>   		sysc_disable_opt_clocks(ddata);
>   		sysc_clkdm_allow_idle(ddata);
> 

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Re: [PATCH] bus: ti-sysc: Remove unpaired sysc_clkdm_deny_idle()

[Tony Lindgren]

Hi,

* Keerthy <j-keerthy@ti.com> [190909 01:57]:
> I believe still the previous fix [1] for nfs boot is still not on
> linux-next. Are you planning on more testing or it will be queued as fixes?

I pushed out the pending fixes on Saturday so they should be in
the next version of Linux next.

Regards,

Tony

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