diff mbox series

[v4,22/25] memory: emif: Use kernel_can_power_off()

Message ID 20211126180101.27818-23-digetx@gmail.com (mailing list archive)
State Not Applicable
Headers show
Series Introduce power-off+restart call chain API | expand

Commit Message

Dmitry Osipenko Nov. 26, 2021, 6 p.m. UTC
Replace legacy pm_power_off with kernel_can_power_off() helper that
is aware about chained power-off handlers.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 drivers/memory/emif.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Michał Mirosław Nov. 28, 2021, 1:23 a.m. UTC | #1
On Fri, Nov 26, 2021 at 09:00:58PM +0300, Dmitry Osipenko wrote:
> Replace legacy pm_power_off with kernel_can_power_off() helper that
> is aware about chained power-off handlers.
> 
> Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
> ---
>  drivers/memory/emif.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/memory/emif.c b/drivers/memory/emif.c
> index 762d0c0f0716..cab10d5274a0 100644
> --- a/drivers/memory/emif.c
> +++ b/drivers/memory/emif.c
> @@ -630,7 +630,7 @@ static irqreturn_t emif_threaded_isr(int irq, void *dev_id)
>  		dev_emerg(emif->dev, "SDRAM temperature exceeds operating limit.. Needs shut down!!!\n");
>  
>  		/* If we have Power OFF ability, use it, else try restarting */
> -		if (pm_power_off) {
> +		if (kernel_can_power_off()) {
>  			kernel_power_off();
>  		} else {
>  			WARN(1, "FIXME: NO pm_power_off!!! trying restart\n");

BTW, this part of the code seems to be better moved to generic code that
could replace POWER_OFF request with REBOOT like it is done for reboot()
syscall.

Best Regards
Michał Mirosław
Dmitry Osipenko Nov. 28, 2021, 9:04 p.m. UTC | #2
28.11.2021 04:23, Michał Mirosław пишет:
> On Fri, Nov 26, 2021 at 09:00:58PM +0300, Dmitry Osipenko wrote:
>> Replace legacy pm_power_off with kernel_can_power_off() helper that
>> is aware about chained power-off handlers.
>>
>> Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
>> ---
>>  drivers/memory/emif.c | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/memory/emif.c b/drivers/memory/emif.c
>> index 762d0c0f0716..cab10d5274a0 100644
>> --- a/drivers/memory/emif.c
>> +++ b/drivers/memory/emif.c
>> @@ -630,7 +630,7 @@ static irqreturn_t emif_threaded_isr(int irq, void *dev_id)
>>  		dev_emerg(emif->dev, "SDRAM temperature exceeds operating limit.. Needs shut down!!!\n");
>>  
>>  		/* If we have Power OFF ability, use it, else try restarting */
>> -		if (pm_power_off) {
>> +		if (kernel_can_power_off()) {
>>  			kernel_power_off();
>>  		} else {
>>  			WARN(1, "FIXME: NO pm_power_off!!! trying restart\n");
> 
> BTW, this part of the code seems to be better moved to generic code that
> could replace POWER_OFF request with REBOOT like it is done for reboot()
> syscall.

Not sure that it can be done. Somebody will have to verify that it won't
break all those platform power-off handlers. Better to keep this code
as-is in the context of this patchset.
diff mbox series

Patch

diff --git a/drivers/memory/emif.c b/drivers/memory/emif.c
index 762d0c0f0716..cab10d5274a0 100644
--- a/drivers/memory/emif.c
+++ b/drivers/memory/emif.c
@@ -630,7 +630,7 @@  static irqreturn_t emif_threaded_isr(int irq, void *dev_id)
 		dev_emerg(emif->dev, "SDRAM temperature exceeds operating limit.. Needs shut down!!!\n");
 
 		/* If we have Power OFF ability, use it, else try restarting */
-		if (pm_power_off) {
+		if (kernel_can_power_off()) {
 			kernel_power_off();
 		} else {
 			WARN(1, "FIXME: NO pm_power_off!!! trying restart\n");